- published: 10 Sep 2013
- views: 2267117
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Alarm clock
An alarm clock (or sometimes just an alarm) is a clock that is designed to make a sound, or some other signal, at a specific time. The primary utility of these clocks is to awaken people from their night's sleep or short naps; they are sometimes used for other reminders as well. Most use sound; some use light or vibration. Some have sensors to identify when a person is in a light stage of sleep, in order to avoid waking someone who is deeply asleep, which causes tiredness, even if the person has had adequate sleep. To stop the sound or light, a button or handle on the clock is pressed; most clocks automatically stop the alarm if left unattended long enough. A classic analog alarm clock has an extra hand or inset dial that is used to specify the time at which to activate the alarm. Alarm clocks are also found on mobile phones and watches.
Traditional mechanical alarm clocks have one or two bells that ring by means of a mainspring that powers a gear to propel a hammer back and forth between the two bells or between the interior sides of a single bell. In some models, the back encasement of the clock itself acts as the bell. In an electric bell-style alarm clock, the bell is rung by an electromagnetic circuit and armature that turns the circuit on and off repeatedly.
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Alarm_clock
Alarm Clock (album)
Alarm Clock is a 1971 album by folk rock musician Richie Havens. It is his highest charting album, reaching number 29 on the Billboard Top 200 in the US. The opening track, a live cover of the Beatles' "Here Comes the Sun" would reach number 16 in the US as part of The Hoax soundtrack.
Track listing
Except where otherwise noted, all tracks composed by Richie Havens and Mark Roth. Note that running times are listed from the original LP, and may vary slightly for other formats.
Personnel
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Alarm_Clock_(album)
Nuclear weapon design
Nuclear weapon designs are physical, chemical, and engineering arrangements that cause the physics package of a nuclear weapon to detonate. There are three existing basic design types. In most existing designs, the explosive energy of deployed devices is derived primarily from nuclear fission, not fusion.
- Gun assembly: one piece of fissile uranium is fired at a fissile uranium target at the end of the weapon, similar to firing a bullet down a gun barrel, achieving critical mass when combined.
- Implosion: a fissile mass of either material (U-235, Pu-239, or a combination) is surrounded by high explosives that compress the mass, resulting in criticality.
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Nuclear_weapon_design
Podcasts:
Matching books:
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Nuclear 101: How Nuclear Bombs Work Part 1/2
Lecture with Matthew Bunn, Associate Professor of Public Policy; Co-Principal Investigator, Project on Managing the Atom Slides from the presentation are available here: http://belfercenter.org/files/HowNuclearBombsWork.pdf More information: http://belfercenter.org/MTA September 10, 2013
published: 10 Sep 2013 -
4th Generation Nuclear Weapons
4th Generation Nuclear Weapons ► Subscribe: https://goo.gl/r5jd1F But what is that theory? The idea is that such weapons would produce considerably less radioactive by-products than current designs of nuclear weapons but, in turn, they would release a huge number of neutrons. The big question is: Should we allow such weapon designs to go ahead and how scared should we be if we do and how scared should we be if we don’t? To best deduce answers to all these questions, we first need to understand what 1st, 2nd and 3rd generation nuclear weapons are. But before that, here are two words you are going to hear a lot over the course of the next ten minutes: “Fusion” and “fission”. To better understand the nature of explosions, you need to understand those two words. #science #army #mili...
published: 14 Nov 2019 -
How Atomic and Hydrogen Bombs Work In 10 Minutes
#eldddir #eldddir_bombs #eldddir_tech #nuclearbomb #hydrogenbomb #bomb #howitworks #howitwork
published: 21 Jun 2020 -
nuclear weapons design and physics
a quick overview of nuclear weapons the design, some physics and early detonation phenomenons. Check out my other videos ! Become a Patreon! https://www.patreon.com/user?u=11973673
published: 28 Mar 2017 -
Nuclear weapons safety devices in gun type and implosion type weapon designs
Nuclear weapons safety devices in gun-type and implosion-type weapon designs American nuclear weapons safety in accidents (a comment on a fashionable deception): "... one simple, dynamo-technology, low voltage switch stood between the United States and a major catastrophe ... It would have been bad news -- in spades." This kind of claim is a popular deception which is often used to "support" propaganda claiming the need for unilateral nuclear disarmament, while keeping us vulnerable to enemy terrorists! Even if a nuclear explosion occurs, it's likely to be less powerful than the charge of conventional explosive in it. The reasons are technical and due to the very difficult electronics problems in firing a lot of detonators simultaneously with a battery whose internal resistance is alwa...
published: 18 Oct 2013 -
How To Make A Nuclear Bomb | Atomic Theory Explained
How do you make a Nuclear Bomb? This video explains how nuclear bomb works and who knows you can actually make your own atomic weapon. :p Be sure to subscribe for more education topics ranging from science to technology all the way to history. What this video teaches you: Nuclear Bombs / Atomic Bombs Atomic Theory Nuclear Fission How to make a Nuclear Bomb? How to make an Atomic Bomb? How is a nuclear bomb made? How Do Nuclear Weapons Work? Is it legal to make a nuclear bomb? How long does it take to make a nuclear bomb? How does a nuclear bomb work? Nuclear weapon design Support us on Patreon: https://www.patreon.com/theexplainedchannel Background music: http://incompetech.com/ Sources and further reading: https://en.wikipedia.org/wiki/Gun-type_fission_weapon https://en.wikipedia.o...
published: 30 Jul 2016 -
"60 Minutes" gets rare look inside nuclear arsenal
Some of the world's most dangerous tools sit beneath the Wyoming countryside. "60 Minutes" correspondent Lesley Stahl got an up-close look at the nation's nuclear arsenal.
published: 25 Apr 2014 -
Going Nuclear - Nuclear Science - Part 5 - Hydrogen Bombs
While the Manhatten project was working on the first fission bombs Edward Teller began working on a fusion powered 'Super' device. Fission devices were 1000 times as powerful as conventional explosives, and fusion devices could be 1000 times more powerful than the early fission devices. Background music is Tranquility Base by Kevin Macleod http://incompetech.com/music/royalty-free/?keywords=tranquility+base
published: 30 Dec 2017 -
The Biggest Bangs
How nuclear weapons work and what is inside of them including critical mass, tampers and triggers, as contrasted to a nuclear reactor. History of nuclear weapon design and their magnitudes. Enrichment of uranium and how it is done both by gaseous diffusion and by centrifuges. Origin and cause of a mushroom cloud. Effects of nuclear detonations including the radiation zone, blast zone and fallout. Difficulty of making plutonium but why it is desired. Mix of isotopes made in a fission reactor. Countries which have nuclear weapons. How a Hydrogen bomb works and what is inside of one. Videos of nuclear explosions.
published: 14 May 2019
developed with YouTube
1:05:29
Nuclear 101: How Nuclear Bombs Work Part 1/2
- Order: Reorder
- Duration: 1:05:29
- Uploaded Date: 10 Sep 2013
- views: 2267117
Lecture with Matthew Bunn, Associate Professor of Public Policy; Co-Principal Investigator, Project on Managing the Atom
Slides from the presentation are avail...
Lecture with Matthew Bunn, Associate Professor of Public Policy; Co-Principal Investigator, Project on Managing the Atom
Slides from the presentation are available here: http://belfercenter.org/files/HowNuclearBombsWork.pdf
More information: http://belfercenter.org/MTA
September 10, 2013
https://wn.com/Nuclear_101_How_Nuclear_Bombs_Work_Part_1_2
Lecture with Matthew Bunn, Associate Professor of Public Policy; Co-Principal Investigator, Project on Managing the Atom
Slides from the presentation are available here: http://belfercenter.org/files/HowNuclearBombsWork.pdf
More information: http://belfercenter.org/MTA
September 10, 2013
12:01
4th Generation Nuclear Weapons
- Order: Reorder
- Duration: 12:01
- Uploaded Date: 14 Nov 2019
- views: 800376
4th Generation Nuclear Weapons
► Subscribe: https://goo.gl/r5jd1F
But what is that theory?
The idea is that such weapons would produce considerably less radi...
4th Generation Nuclear Weapons
► Subscribe: https://goo.gl/r5jd1F
But what is that theory?
The idea is that such weapons would produce considerably less radioactive by-products than current designs of nuclear weapons but, in turn, they would release a huge number of neutrons.
The big question is: Should we allow such weapon designs to go ahead and how scared should we be if we do and how scared should we be if we don’t?
To best deduce answers to all these questions, we first need to understand what 1st, 2nd and 3rd generation nuclear weapons are. But before that, here are two words you are going to hear a lot over the course of the next ten minutes:
“Fusion” and “fission”.
To better understand the nature of explosions, you need to understand those two words.
#science #army #military #nuclear #weapon #weapons #destiny #space
https://wn.com/4Th_Generation_Nuclear_Weapons
4th Generation Nuclear Weapons
► Subscribe: https://goo.gl/r5jd1F
But what is that theory?
The idea is that such weapons would produce considerably less radioactive by-products than current designs of nuclear weapons but, in turn, they would release a huge number of neutrons.
The big question is: Should we allow such weapon designs to go ahead and how scared should we be if we do and how scared should we be if we don’t?
To best deduce answers to all these questions, we first need to understand what 1st, 2nd and 3rd generation nuclear weapons are. But before that, here are two words you are going to hear a lot over the course of the next ten minutes:
“Fusion” and “fission”.
To better understand the nature of explosions, you need to understand those two words.
#science #army #military #nuclear #weapon #weapons #destiny #space
- published: 14 Nov 2019
- views: 800376
10:05
How Atomic and Hydrogen Bombs Work In 10 Minutes
- Order: Reorder
- Duration: 10:05
- Uploaded Date: 21 Jun 2020
- views: 4013761
#eldddir #eldddir_bombs #eldddir_tech #nuclearbomb #hydrogenbomb #bomb #howitworks #howitwork
#eldddir #eldddir_bombs #eldddir_tech #nuclearbomb #hydrogenbomb #bomb #howitworks #howitwork
https://wn.com/How_Atomic_And_Hydrogen_Bombs_Work_In_10_Minutes
#eldddir #eldddir_bombs #eldddir_tech #nuclearbomb #hydrogenbomb #bomb #howitworks #howitwork
- published: 21 Jun 2020
- views: 4013761
9:14
nuclear weapons design and physics
- Order: Reorder
- Duration: 9:14
- Uploaded Date: 28 Mar 2017
- views: 1387
a quick overview of nuclear weapons the design, some physics and early detonation phenomenons.
Check out my other videos !
Become a Patreon!
https://www.patreo...
a quick overview of nuclear weapons the design, some physics and early detonation phenomenons.
Check out my other videos !
Become a Patreon!
https://www.patreon.com/user?u=11973673
https://wn.com/Nuclear_Weapons_Design_And_Physics
a quick overview of nuclear weapons the design, some physics and early detonation phenomenons.
Check out my other videos !
Become a Patreon!
https://www.patreon.com/user?u=11973673
- published: 28 Mar 2017
- views: 1387
7:31
Nuclear weapons safety devices in gun type and implosion type weapon designs
- Order: Reorder
- Duration: 7:31
- Uploaded Date: 18 Oct 2013
- views: 7662
Nuclear weapons safety devices in gun-type and implosion-type weapon designs
American nuclear weapons safety in accidents (a comment on a fashionable deception...
Nuclear weapons safety devices in gun-type and implosion-type weapon designs
American nuclear weapons safety in accidents (a comment on a fashionable deception):
"... one simple, dynamo-technology, low voltage switch stood between the United States and a major catastrophe ... It would have been bad news -- in spades."
This kind of claim is a popular deception which is often used to "support" propaganda claiming the need for unilateral nuclear disarmament, while keeping us vulnerable to enemy terrorists!
Even if a nuclear explosion occurs, it's likely to be less powerful than the charge of conventional explosive in it. The reasons are technical and due to the very difficult electronics problems in firing a lot of detonators simultaneously with a battery whose internal resistance is always too high to provide enough current under the load (even though the battery contains enough energy to fire all the detonators, it can't do so at the same time, directly).
No practical battery pack in a deliverable nuclear weapon with 32 or more point implosion nuclear weapon has ever been capable of setting off the nuclear weapon directly because of the tremendous current needed. This has nothing to do with the energy in the battery, which is of course adequate. The problem is that batteries have an internal resistance which limits the amount of current (which limits the rate at which they deliver energy).
To overcome this, implosion weapons from Trinity onward have used an X-unit containing a bank of high-capacitance capacitors. Energy is first transferred from the battery to the capacitors during a charging taking about a minute or so, then - at detonation time - the capacitor bank is discharged by a very special, high-current switch which can cleanly deliver an abrupt pulse with a rapid rise time (either a special krytron cold-cathode gas filled tube, or an explosive switch which fires a pointed metal stud through two metal conductors which are separated by a plastic insulator).
This charging of the X-unit means a very severe limitation on the yield of accidental nuclear weapons. If you drop a nuclear bomb, even if switches are triggered in the impact, the X-unit is not going to be charged up at the right time to cause a full yield nuclear detonation. Nuclear weapons have "one-point safety", so if you were to close the switches and fire the weapon before the X-unit is adequately charged, which takes many seconds, inadequate current will be delivered to the detonators (which are connected in a parallel circuit, requiring an immense current to fire simultaneously). So most likely, all the detonators will just warm slightly, without firing. Even if there is enough current and one does fire (the one with the least resistance, the weakest link in the circuit, which gets hottest), it is a one-point explosion with the nuclear fission equivalent of just 4 pounds of TNT or about 2 kg of TNT. This nuclear explosion will be dwarfed by the explosion of the conventional explosives in the weapon, which in implosion devices greatly exceed 2 kg of TNT equivalent.
To get a higher-yield nuclear explosion, modern warheads need not only simultaneous detonators to be fired by a recently charged-up capacitor bank, they also need the neutron gun to be fired about the time of maximum core compression, a matter of very careful timing, roughly millisecond or so after the X-unit is discharged by the special high-current switch to cause the implosion! Here, again, the electronics timing circuit is fully in control, and makes the weapon safe.
The American bombs also contain disabling devices that prevent unauthorized or accidental nuclear explosions due to impact or theft, so the probability of random switch closures occurring at the right times for charging the capacitor bank, firing the detonators, then firing the neutron gun, is so astronomically insignificant you should worry more about the finite probability of everyone on earth being killed by a car accident on the same day, so we go extinct.
For modern thermonuclear weapons, there is an additional switch which needs to be set off at a suitable time during the preparation in advance of the explosion: the fission stage boosting from deuterium and tritium gas mixture, which is injected into the hollow core prior to the explosion. (Some older weapons had the gas in sealed pits which avoided this, but since tritium has a half-life of only about 12 years, this meant that the pits had to be regularly taken out, unsealed, and re-gassed. A separate gas reservoir in the weapon allows tritium gas to replenished more easily after it decays.)
http://archive.org/stream/TheEffectsOfNuclearWeapons/enw64a#page/n283/mode/2up
https://wn.com/Nuclear_Weapons_Safety_Devices_In_Gun_Type_And_Implosion_Type_Weapon_Designs
Nuclear weapons safety devices in gun-type and implosion-type weapon designs
American nuclear weapons safety in accidents (a comment on a fashionable deception):
"... one simple, dynamo-technology, low voltage switch stood between the United States and a major catastrophe ... It would have been bad news -- in spades."
This kind of claim is a popular deception which is often used to "support" propaganda claiming the need for unilateral nuclear disarmament, while keeping us vulnerable to enemy terrorists!
Even if a nuclear explosion occurs, it's likely to be less powerful than the charge of conventional explosive in it. The reasons are technical and due to the very difficult electronics problems in firing a lot of detonators simultaneously with a battery whose internal resistance is always too high to provide enough current under the load (even though the battery contains enough energy to fire all the detonators, it can't do so at the same time, directly).
No practical battery pack in a deliverable nuclear weapon with 32 or more point implosion nuclear weapon has ever been capable of setting off the nuclear weapon directly because of the tremendous current needed. This has nothing to do with the energy in the battery, which is of course adequate. The problem is that batteries have an internal resistance which limits the amount of current (which limits the rate at which they deliver energy).
To overcome this, implosion weapons from Trinity onward have used an X-unit containing a bank of high-capacitance capacitors. Energy is first transferred from the battery to the capacitors during a charging taking about a minute or so, then - at detonation time - the capacitor bank is discharged by a very special, high-current switch which can cleanly deliver an abrupt pulse with a rapid rise time (either a special krytron cold-cathode gas filled tube, or an explosive switch which fires a pointed metal stud through two metal conductors which are separated by a plastic insulator).
This charging of the X-unit means a very severe limitation on the yield of accidental nuclear weapons. If you drop a nuclear bomb, even if switches are triggered in the impact, the X-unit is not going to be charged up at the right time to cause a full yield nuclear detonation. Nuclear weapons have "one-point safety", so if you were to close the switches and fire the weapon before the X-unit is adequately charged, which takes many seconds, inadequate current will be delivered to the detonators (which are connected in a parallel circuit, requiring an immense current to fire simultaneously). So most likely, all the detonators will just warm slightly, without firing. Even if there is enough current and one does fire (the one with the least resistance, the weakest link in the circuit, which gets hottest), it is a one-point explosion with the nuclear fission equivalent of just 4 pounds of TNT or about 2 kg of TNT. This nuclear explosion will be dwarfed by the explosion of the conventional explosives in the weapon, which in implosion devices greatly exceed 2 kg of TNT equivalent.
To get a higher-yield nuclear explosion, modern warheads need not only simultaneous detonators to be fired by a recently charged-up capacitor bank, they also need the neutron gun to be fired about the time of maximum core compression, a matter of very careful timing, roughly millisecond or so after the X-unit is discharged by the special high-current switch to cause the implosion! Here, again, the electronics timing circuit is fully in control, and makes the weapon safe.
The American bombs also contain disabling devices that prevent unauthorized or accidental nuclear explosions due to impact or theft, so the probability of random switch closures occurring at the right times for charging the capacitor bank, firing the detonators, then firing the neutron gun, is so astronomically insignificant you should worry more about the finite probability of everyone on earth being killed by a car accident on the same day, so we go extinct.
For modern thermonuclear weapons, there is an additional switch which needs to be set off at a suitable time during the preparation in advance of the explosion: the fission stage boosting from deuterium and tritium gas mixture, which is injected into the hollow core prior to the explosion. (Some older weapons had the gas in sealed pits which avoided this, but since tritium has a half-life of only about 12 years, this meant that the pits had to be regularly taken out, unsealed, and re-gassed. A separate gas reservoir in the weapon allows tritium gas to replenished more easily after it decays.)
http://archive.org/stream/TheEffectsOfNuclearWeapons/enw64a#page/n283/mode/2up
- published: 18 Oct 2013
- views: 7662
4:57
How To Make A Nuclear Bomb | Atomic Theory Explained
- Order: Reorder
- Duration: 4:57
- Uploaded Date: 30 Jul 2016
- views: 654786
How do you make a Nuclear Bomb? This video explains how nuclear bomb works and who knows you can actually make your own atomic weapon. :p
Be sure to subscribe ...
How do you make a Nuclear Bomb? This video explains how nuclear bomb works and who knows you can actually make your own atomic weapon. :p
Be sure to subscribe for more education topics ranging from science to technology all the way to history.
What this video teaches you:
Nuclear Bombs / Atomic Bombs
Atomic Theory
Nuclear Fission
How to make a Nuclear Bomb?
How to make an Atomic Bomb?
How is a nuclear bomb made?
How Do Nuclear Weapons Work?
Is it legal to make a nuclear bomb?
How long does it take to make a nuclear bomb?
How does a nuclear bomb work?
Nuclear weapon design
Support us on Patreon: https://www.patreon.com/theexplainedchannel
Background music:
http://incompetech.com/
Sources and further reading:
https://en.wikipedia.org/wiki/Gun-type_fission_weapon
https://en.wikipedia.org/wiki/Nuclear_weapon
https://en.wikipedia.org/wiki/Atomic_bombings_of_Hiroshima_and_Nagasaki
#NuclearBomb #AtomicBomb #AtomicTheory
https://wn.com/How_To_Make_A_Nuclear_Bomb_|_Atomic_Theory_Explained
How do you make a Nuclear Bomb? This video explains how nuclear bomb works and who knows you can actually make your own atomic weapon. :p
Be sure to subscribe for more education topics ranging from science to technology all the way to history.
What this video teaches you:
Nuclear Bombs / Atomic Bombs
Atomic Theory
Nuclear Fission
How to make a Nuclear Bomb?
How to make an Atomic Bomb?
How is a nuclear bomb made?
How Do Nuclear Weapons Work?
Is it legal to make a nuclear bomb?
How long does it take to make a nuclear bomb?
How does a nuclear bomb work?
Nuclear weapon design
Support us on Patreon: https://www.patreon.com/theexplainedchannel
Background music:
http://incompetech.com/
Sources and further reading:
https://en.wikipedia.org/wiki/Gun-type_fission_weapon
https://en.wikipedia.org/wiki/Nuclear_weapon
https://en.wikipedia.org/wiki/Atomic_bombings_of_Hiroshima_and_Nagasaki
#NuclearBomb #AtomicBomb #AtomicTheory
- published: 30 Jul 2016
- views: 654786
4:18
"60 Minutes" gets rare look inside nuclear arsenal
- Order: Reorder
- Duration: 4:18
- Uploaded Date: 25 Apr 2014
- views: 485846
Some of the world's most dangerous tools sit beneath the Wyoming countryside. "60 Minutes" correspondent Lesley Stahl got an up-close look at the nation's nucle...
Some of the world's most dangerous tools sit beneath the Wyoming countryside. "60 Minutes" correspondent Lesley Stahl got an up-close look at the nation's nuclear arsenal.
https://wn.com/60_Minutes_Gets_Rare_Look_Inside_Nuclear_Arsenal
Some of the world's most dangerous tools sit beneath the Wyoming countryside. "60 Minutes" correspondent Lesley Stahl got an up-close look at the nation's nuclear arsenal.
- published: 25 Apr 2014
- views: 485846
11:56
Going Nuclear - Nuclear Science - Part 5 - Hydrogen Bombs
- Order: Reorder
- Duration: 11:56
- Uploaded Date: 30 Dec 2017
- views: 455151
While the Manhatten project was working on the first fission bombs Edward Teller began working on a fusion powered 'Super' device. Fission devices were 1000 tim...
While the Manhatten project was working on the first fission bombs Edward Teller began working on a fusion powered 'Super' device. Fission devices were 1000 times as powerful as conventional explosives, and fusion devices could be 1000 times more powerful than the early fission devices.
Background music is Tranquility Base by Kevin Macleod
http://incompetech.com/music/royalty-free/?keywords=tranquility+base
https://wn.com/Going_Nuclear_Nuclear_Science_Part_5_Hydrogen_Bombs
While the Manhatten project was working on the first fission bombs Edward Teller began working on a fusion powered 'Super' device. Fission devices were 1000 times as powerful as conventional explosives, and fusion devices could be 1000 times more powerful than the early fission devices.
Background music is Tranquility Base by Kevin Macleod
http://incompetech.com/music/royalty-free/?keywords=tranquility+base
- published: 30 Dec 2017
- views: 455151
18:23
The Biggest Bangs
- Order: Reorder
- Duration: 18:23
- Uploaded Date: 14 May 2019
- views: 91124
How nuclear weapons work and what is inside of them including critical mass, tampers and triggers, as contrasted to a nuclear reactor. History of nuclear weapon...
How nuclear weapons work and what is inside of them including critical mass, tampers and triggers, as contrasted to a nuclear reactor. History of nuclear weapon design and their magnitudes. Enrichment of uranium and how it is done both by gaseous diffusion and by centrifuges. Origin and cause of a mushroom cloud. Effects of nuclear detonations including the radiation zone, blast zone and fallout. Difficulty of making plutonium but why it is desired. Mix of isotopes made in a fission reactor. Countries which have nuclear weapons. How a Hydrogen bomb works and what is inside of one. Videos of nuclear explosions.
https://wn.com/The_Biggest_Bangs
How nuclear weapons work and what is inside of them including critical mass, tampers and triggers, as contrasted to a nuclear reactor. History of nuclear weapon design and their magnitudes. Enrichment of uranium and how it is done both by gaseous diffusion and by centrifuges. Origin and cause of a mushroom cloud. Effects of nuclear detonations including the radiation zone, blast zone and fallout. Difficulty of making plutonium but why it is desired. Mix of isotopes made in a fission reactor. Countries which have nuclear weapons. How a Hydrogen bomb works and what is inside of one. Videos of nuclear explosions.
- published: 14 May 2019
- views: 91124
1:05:29
Nuclear 101: How Nuclear Bombs Work Part 1/2
Lecture with Matthew Bunn, Associate Professor of Public Policy; Co-Principal Investigator...
published: 10 Sep 2013
Nuclear 101: How Nuclear Bombs Work Part 1/2
Nuclear 101: How Nuclear Bombs Work Part 1/2
- Report rights infringement
- published: 10 Sep 2013
- views: 2267117
Lecture with Matthew Bunn, Associate Professor of Public Policy; Co-Principal Investigator, Project on Managing the Atom
Slides from the presentation are available here: http://belfercenter.org/files/HowNuclearBombsWork.pdf
More information: http://belfercenter.org/MTA
September 10, 2013
12:01
4th Generation Nuclear Weapons
4th Generation Nuclear Weapons
► Subscribe: https://goo.gl/r5jd1F
But what is that theor...
published: 14 Nov 2019
4th Generation Nuclear Weapons
4th Generation Nuclear Weapons
- Report rights infringement
- published: 14 Nov 2019
- views: 800376
4th Generation Nuclear Weapons
► Subscribe: https://goo.gl/r5jd1F
But what is that theory?
The idea is that such weapons would produce considerably less radioactive by-products than current designs of nuclear weapons but, in turn, they would release a huge number of neutrons.
The big question is: Should we allow such weapon designs to go ahead and how scared should we be if we do and how scared should we be if we don’t?
To best deduce answers to all these questions, we first need to understand what 1st, 2nd and 3rd generation nuclear weapons are. But before that, here are two words you are going to hear a lot over the course of the next ten minutes:
“Fusion” and “fission”.
To better understand the nature of explosions, you need to understand those two words.
#science #army #military #nuclear #weapon #weapons #destiny #space
10:05
How Atomic and Hydrogen Bombs Work In 10 Minutes
#eldddir #eldddir_bombs #eldddir_tech #nuclearbomb #hydrogenbomb #bomb #howitworks #howitw...
published: 21 Jun 2020
How Atomic and Hydrogen Bombs Work In 10 Minutes
How Atomic and Hydrogen Bombs Work In 10 Minutes
- Report rights infringement
- published: 21 Jun 2020
- views: 4013761
#eldddir #eldddir_bombs #eldddir_tech #nuclearbomb #hydrogenbomb #bomb #howitworks #howitwork
9:14
nuclear weapons design and physics
a quick overview of nuclear weapons the design, some physics and early detonation phenomen...
published: 28 Mar 2017
nuclear weapons design and physics
nuclear weapons design and physics
- Report rights infringement
- published: 28 Mar 2017
- views: 1387
a quick overview of nuclear weapons the design, some physics and early detonation phenomenons.
Check out my other videos !
Become a Patreon!
https://www.patreon.com/user?u=11973673
7:31
Nuclear weapons safety devices in gun type and implosion type weapon designs
Nuclear weapons safety devices in gun-type and implosion-type weapon designs
American nuc...
published: 18 Oct 2013
Nuclear weapons safety devices in gun type and implosion type weapon designs
Nuclear weapons safety devices in gun type and implosion type weapon designs
- Report rights infringement
- published: 18 Oct 2013
- views: 7662
Nuclear weapons safety devices in gun-type and implosion-type weapon designs
American nuclear weapons safety in accidents (a comment on a fashionable deception):
"... one simple, dynamo-technology, low voltage switch stood between the United States and a major catastrophe ... It would have been bad news -- in spades."
This kind of claim is a popular deception which is often used to "support" propaganda claiming the need for unilateral nuclear disarmament, while keeping us vulnerable to enemy terrorists!
Even if a nuclear explosion occurs, it's likely to be less powerful than the charge of conventional explosive in it. The reasons are technical and due to the very difficult electronics problems in firing a lot of detonators simultaneously with a battery whose internal resistance is always too high to provide enough current under the load (even though the battery contains enough energy to fire all the detonators, it can't do so at the same time, directly).
No practical battery pack in a deliverable nuclear weapon with 32 or more point implosion nuclear weapon has ever been capable of setting off the nuclear weapon directly because of the tremendous current needed. This has nothing to do with the energy in the battery, which is of course adequate. The problem is that batteries have an internal resistance which limits the amount of current (which limits the rate at which they deliver energy).
To overcome this, implosion weapons from Trinity onward have used an X-unit containing a bank of high-capacitance capacitors. Energy is first transferred from the battery to the capacitors during a charging taking about a minute or so, then - at detonation time - the capacitor bank is discharged by a very special, high-current switch which can cleanly deliver an abrupt pulse with a rapid rise time (either a special krytron cold-cathode gas filled tube, or an explosive switch which fires a pointed metal stud through two metal conductors which are separated by a plastic insulator).
This charging of the X-unit means a very severe limitation on the yield of accidental nuclear weapons. If you drop a nuclear bomb, even if switches are triggered in the impact, the X-unit is not going to be charged up at the right time to cause a full yield nuclear detonation. Nuclear weapons have "one-point safety", so if you were to close the switches and fire the weapon before the X-unit is adequately charged, which takes many seconds, inadequate current will be delivered to the detonators (which are connected in a parallel circuit, requiring an immense current to fire simultaneously). So most likely, all the detonators will just warm slightly, without firing. Even if there is enough current and one does fire (the one with the least resistance, the weakest link in the circuit, which gets hottest), it is a one-point explosion with the nuclear fission equivalent of just 4 pounds of TNT or about 2 kg of TNT. This nuclear explosion will be dwarfed by the explosion of the conventional explosives in the weapon, which in implosion devices greatly exceed 2 kg of TNT equivalent.
To get a higher-yield nuclear explosion, modern warheads need not only simultaneous detonators to be fired by a recently charged-up capacitor bank, they also need the neutron gun to be fired about the time of maximum core compression, a matter of very careful timing, roughly millisecond or so after the X-unit is discharged by the special high-current switch to cause the implosion! Here, again, the electronics timing circuit is fully in control, and makes the weapon safe.
The American bombs also contain disabling devices that prevent unauthorized or accidental nuclear explosions due to impact or theft, so the probability of random switch closures occurring at the right times for charging the capacitor bank, firing the detonators, then firing the neutron gun, is so astronomically insignificant you should worry more about the finite probability of everyone on earth being killed by a car accident on the same day, so we go extinct.
For modern thermonuclear weapons, there is an additional switch which needs to be set off at a suitable time during the preparation in advance of the explosion: the fission stage boosting from deuterium and tritium gas mixture, which is injected into the hollow core prior to the explosion. (Some older weapons had the gas in sealed pits which avoided this, but since tritium has a half-life of only about 12 years, this meant that the pits had to be regularly taken out, unsealed, and re-gassed. A separate gas reservoir in the weapon allows tritium gas to replenished more easily after it decays.)
http://archive.org/stream/TheEffectsOfNuclearWeapons/enw64a#page/n283/mode/2up
4:57
How To Make A Nuclear Bomb | Atomic Theory Explained
How do you make a Nuclear Bomb? This video explains how nuclear bomb works and who knows y...
published: 30 Jul 2016
How To Make A Nuclear Bomb | Atomic Theory Explained
How To Make A Nuclear Bomb | Atomic Theory Explained
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- published: 30 Jul 2016
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How do you make a Nuclear Bomb? This video explains how nuclear bomb works and who knows you can actually make your own atomic weapon. :p
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How Do Nuclear Weapons Work?
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4:18
"60 Minutes" gets rare look inside nuclear arsenal
Some of the world's most dangerous tools sit beneath the Wyoming countryside. "60 Minutes"...
published: 25 Apr 2014
"60 Minutes" gets rare look inside nuclear arsenal
"60 Minutes" gets rare look inside nuclear arsenal
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Some of the world's most dangerous tools sit beneath the Wyoming countryside. "60 Minutes" correspondent Lesley Stahl got an up-close look at the nation's nuclear arsenal.
11:56
Going Nuclear - Nuclear Science - Part 5 - Hydrogen Bombs
While the Manhatten project was working on the first fission bombs Edward Teller began wor...
published: 30 Dec 2017
Going Nuclear - Nuclear Science - Part 5 - Hydrogen Bombs
Going Nuclear - Nuclear Science - Part 5 - Hydrogen Bombs
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While the Manhatten project was working on the first fission bombs Edward Teller began working on a fusion powered 'Super' device. Fission devices were 1000 times as powerful as conventional explosives, and fusion devices could be 1000 times more powerful than the early fission devices.
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18:23
The Biggest Bangs
How nuclear weapons work and what is inside of them including critical mass, tampers and t...
published: 14 May 2019
The Biggest Bangs
The Biggest Bangs
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How nuclear weapons work and what is inside of them including critical mass, tampers and triggers, as contrasted to a nuclear reactor. History of nuclear weapon design and their magnitudes. Enrichment of uranium and how it is done both by gaseous diffusion and by centrifuges. Origin and cause of a mushroom cloud. Effects of nuclear detonations including the radiation zone, blast zone and fallout. Difficulty of making plutonium but why it is desired. Mix of isotopes made in a fission reactor. Countries which have nuclear weapons. How a Hydrogen bomb works and what is inside of one. Videos of nuclear explosions.
Alarm clock
An alarm clock (or sometimes just an alarm) is a clock that is designed to make a sound, or some other signal, at a specific time. The primary utility of these clocks is to awaken people from their night's sleep or short naps; they are sometimes used for other reminders as well. Most use sound; some use light or vibration. Some have sensors to identify when a person is in a light stage of sleep, in order to avoid waking someone who is deeply asleep, which causes tiredness, even if the person has had adequate sleep. To stop the sound or light, a button or handle on the clock is pressed; most clocks automatically stop the alarm if left unattended long enough. A classic analog alarm clock has an extra hand or inset dial that is used to specify the time at which to activate the alarm. Alarm clocks are also found on mobile phones and watches.
Traditional mechanical alarm clocks have one or two bells that ring by means of a mainspring that powers a gear to propel a hammer back and forth between the two bells or between the interior sides of a single bell. In some models, the back encasement of the clock itself acts as the bell. In an electric bell-style alarm clock, the bell is rung by an electromagnetic circuit and armature that turns the circuit on and off repeatedly.
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Alarm_clock
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Alarm Clock
by: Shinee[JONGHYUN] Oneuldo nan ttame heumppeok jeojeo
jameul kkae daeche mideul su eobseo oh nan [MINHO](jidokhan angmong)
[TAEMIN] Maeil bam banbok doeneun kkum sok
geojitmal gachi neon chagapge nal tteona oh nan
[MINHO] Mideul su eobseo ajik ne ipsul
[ONEW] Bonael su eobseo ajik nae ppyame (jjok) daheun deut hae
jiul su eomneunde
[ALL] Naui allamsigyega eoseo ullyeo i kkumeul kkaebeorigil
angmong gateun siganeul dasi dollyeo ibyeoreul naejjotgil
gojangna beorin chae meomchwo seon motdoen kkum beoseonal suga eobseo
allamsigyega sikkeureopge ureo nal kkaeugil oh eoseo
[TAEMIN] Nal kkaewo
[KEY] Jageun bitbangure seuchyeo tteoreojineun kkoccheoreom
negen amu ildo anira haedo [MINHO](heeojija)
[ONEW] Damdamhan ne hanmadie chagapge jamdeureo
ajik japhil deut hae neoui singiru [JONGHYUN]o jebal
[MINHO] Mideul su eobseo ajik ne hyanggi
jiul su eobseo ajik nae pume (puk) baeeo isseo
[JONGHYUN]igeon kkumil geoya
[ALL] Naui allamsigyega eoseo ullyeo i kkumeul kkaebeorigil
angmong gateun siganeul dasi dollyeo ibyeoreul naejjotgil
gojangna beorin chae meomchwo seon motdoen kkum beoseonal suga eobseo
allamsigyega sikkeureopge ureo nal kkaeugil oh eoseo
[JONGHYUN] angmong soge nan nan gireul irheo nan nan
angmong soge nan nan gireul irheo nan nan angmong soge
[ALL] Nega tteonatdaneun geol mitji motae ibyeoreul tto bujeonghae
algo isseo ibyeori i sungani kkumi aniraneun geol
injeonghal su eomneun geol nan hyeonsireul gyeondyeonael suga eobseo
dasi dorawa angmong gateun hyeonsil nega pillyohae o
[ALL] Naui allamsigyega eoseo ullyeo i kkumeul kkaebeorigil
angmong gateun siganeul dasi dollyeo ibyeoreul naejjotgil
gojangna beorin chae meomchwo seon motdoen kkum beoseonal suga eobseo
allamsigyega sikkeureopge ureo nal kkaeugil oh eoseo
[MINHO] Eoseo [JONGHYUN] Nal kkaewo [MINHO] Nal kkaewo
[MINHO] Ginagin jame kkaeeo eoseureumi jiteun gireul jina
gipeun saenggage jamgyeo dasi neol geuryeo
janjanhan hosu dolmaengi hanareul deonjyeo noko
jageun donggeuramireul geurigo tto geurigo
Latest News for: alarm clock
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Minimal toilet breaks, alarm clock curbs: Chinese tricksters take cue from Squid Game to prey on the indeb
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Minimal toilet breaks, alarm clock curbs: Chinese tricksters take cue from Squid Game to prey ...
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How tricksters are hosting 'Squid Game' to prey on indebted Chinese
BEIJING ... And regulators are warning people about dodgy debt relief claims ... The long lists of rules in the challenges include toilet breaks not exceeding 15 minutes and bans on touching the alarm clock more than twice a day ... .
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Chinese tricksters take cue from Squid Game to prey on the indebted
And regulators are warning people about dodgy debt relief claims ... The long lists of rules in the challenges include toilet breaks not exceeding 15 minutes and bans on touching the alarm clock more than twice a day ... Business. .
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Permanent Standard Time? Trump’s Plan Could Change How D.C., Nation Experiences Daylight
Pexels.com","created_timestamp"."0","copyright"."","focal_length"."0","iso"."0","shutter_speed"."0","title"."person holding a alarm clock","orientation"."0"}" ...
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Philippine Christmas: A tropical wonderland of cheer
1. Kicking off in the "Ber" months ... 2 ... Gulf News ... For nine mornings before Christmas, Filipinos flock to pre-dawn masses called "Simbang Gabi". It forms part of the ultimate Filipino Christmas tradition — that tests your faith and your alarm clock ... .
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Since its 1982 unveiling, Ohio Gov. James A. Rhodes statue has prompted protests, vandalism
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Bethel first graders write letters to Santa
Special to the News-Star. Editor’s note. These are some of the Dear Santa letters that have been submitted to the News-Star from area schools ... Mrs. Ledgerwood ... I also need some gems, shells, an alarm clock next to my bed, a boombox, candy, and more.
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Adventures in Reading: Our Christmas adventure in time
So, when we learned that they were having a special Holiday celebration at the house on December 9, 2024, we set the alarm clock to get up in time to drive to Emporia. What a wonderful tour we had! ... He should not be forgotten ... ....
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