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7/11/2015 4:07:05 AM
23
Dumb science question
In science fiction laser/energy weapons are depicted as having no recoil (such as a phaser in Star trek.) Now my question: If humans were to develop energy weapons would they actually be recoil-less or would they have recoil? The reason I'm asking is because physics isn't my strong suit.
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1 返信Short answer, no Long answer, laser weaponry is a horrible weapon. For the amount of energy it takes to fire one damage dealing laser blast, I could superheat, and fire, a few dozen of charged plasma rounds the size of your head.
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2 通の返信
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2 通の返信Snappyにより編集済み: 7/11/2015 4:13:37 AMDidn't the U.S. Military create a energy weapon? Science already answered for you
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1 返信A laser involves light, I believe, and light is weightless, so it wouldn't have any weight or send off recoil.
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9 通の返信No recoil. I'll try to say as understandable as possible: -Photons contain no mass. Bullets do. -The recoil in a gun is caused by a force:an opposite and equal force (All forces have an opposite and equal reaction) of the bullet leaving the chamber. -So what you can conclude, is if photons have no mass, there won't be any recoil, because there is no mass to be exerted. I hope this helped. My dream one day is to be an astrophysicist, so yeah ask me anything.
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1 返信Think of it this way: When you turn a lightbulb on, do you suddenly feel the light pounding on you, exerting a force? Figure it out.
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6 通の返信
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Photons don't have mass. Recoil is caused by an equal and opposite reaction of the bullet leaving the gun. Since f=ma and photons have no mass, there would be no force. So no, a laser gun wouldn't have a recoil.
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2 通の返信They wouldn't have recoil. What causes recoil in guns is the energy released where the gun powder explodes. There isn't anything like that in energy based (ie laser) weapons.
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I imagine kick exists because of a strong kinetic force in the weapon's function(gunpowder combustion) and how that force relates to the weapon's mass. If you kind of eliminated that and instead just focused energy in one direction, I doubt there would be a lot of recoil, if at all. Alright, that's enough shitty pseudo science for the day.
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~wolfBTM~により編集済み: 7/11/2015 4:15:25 AMIt depends. Recoil exists due to forces used to fire the bullet or other projectile "kicking back" (Newton's third law). Energy weapons wouldn't necessarily need a large force (if any) to propel them, but if some force was needed to fire it then it would have some form of recoil...
