Ask a Physicist 9.1 Nuclear Weapons (sound fixed)

A video about nuclear weapons, how they work and how they have impacted our history.
This first part focuses on the nuclear reactions that go on in a nuclear explosion.

For More information see:
- Lecture on Binding energy:
http://www.upscale.utoronto.ca/PVB/DBailey/SubAtomic/Lectures/LectF25/Lect25.htm
- The strength of the strong force:
http://www.fnal.gov/pub/inquiring/questions/strong_force.html
- Info and pictures form Hiroshima and Nagasaki:
http://www.atomcentral.com/hironaga.html
http://nuclearweaponarchive.org/Japan/Hirosh.html
- A visual Timeline of Nuclear Weapons (must see):
http://www.youtube.com/watch?v=gJe7fY-yowk&feature=mh_lolz&list=LLozH...
- Stephen Hawking's Universe: Stellar Factories:
http://dsc.discovery.com/videos/stephen-hawkings-universe-stellar-factories.html
-Neil Degrasse Tyson The Elements: Forged in Stars:
http://www.youtube.com/watch?v=B-LXUHJmzzc

Category:

Education

Tags:

• nuclear weapons
• nuclear bombs
• atomic bombs
• hiroshima
• nagasaki
• nuclear energy
• destruction
• blast
• destroy
• missile
• rocket
• mass
• power
• explosions

[TFMromolo]

Y U NO UPLOAD

[ASKaPHYSICIST]

@TFMromolo sorry, i ll work on something Just got a lot of stuff to deal with atm

[ARSA525]

Is there anymore enough nukes to cause a global scale destruction in the world? I hope not.

[ASKaPHYSICIST]

@ARSA525 I I doubt it. Why would there be. You dont need that many nukes to win a war.

[r0b0tj0n3s]

i had an unrelated question, why is it that the planets in the solar system rotate in the same direction? not only that, but they also rotate on the same plane (such as east to west rather than up and down or on some kind of diagonal slant). why is this?

[ASKaPHYSICIST]

@r0b0tj0n3s well, it's just about conservation of angular momentum really. Essentially the solar system was made by a collapsing gas cloud. This cloud had some overall rotation, so instead of collapsing into a single point, it collapsed into a disc. This disc condensed further into the sun and the planets and the same logic applies there giving all of them their spin. I think that's one of the models of planet formation anyways. There is another which I dont actually understand that well.

[Okapipoke]

@Viper47743 CHEERS :) no seriously i had no idea

[Viper47743]

@Okapipoke You mean a cell's nucleus? This is an atoms nucleus, it's two different things.

[2J8O4S6H9]

your back!! great vids!

[supremeon1]

Come on, man, it's been several months... where is part 2? :) you're doing a very very cute thing... please, don't stop...

[supremeon1]

@r0b0tj0n3s Actually, it's not a perfect plane... i think there is a +/- 15 degree variation.. Also, Uranus spins upside down :) And, take a look at the trans-neptunian bodies: some of them have strange trajectories. For example, Sedna. But, if you were a small planet, wouldn't you try to conserve energy, and, over millions of years, move together with the others? :)

[mp3talon]

very cool.

[Okapipoke]

(Not including nuclear).

[Okapipoke]

Can I see you write down the seven types of energy?