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/sci/ - Science & Math


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15050006 No.15050006 [Reply] [Original]

So you are telling me if I shoot a gun while traveling at the speed of light the bullet won’t exit the gun?

>> No.15050013

>>15050006
I'm not telling you that, no.

>> No.15050017

the bullet will exit the gun normally

>> No.15050025

>>15050006
>while traveling at the speed of light
not going to happen

>> No.15050046

> traveling at the speed of light

Lost me there. A gun is made of fermions. Fermions cannot travel at the speed of light,

>> No.15050049

>>15050046
It's not because they're fermions midwit, it's because they have a mass greater than 0

>> No.15050054

If you were travelling 100-10^-100 percent of the speed of light, from your frame of reference the bullet would exit the gun at its normal speed, faster than you would even notice. If you were travelling 100% of the speed of light the bullet would not exit but that's impossible to begin with because you, your gun and the bullet have mass.

>> No.15050060

>>15050049

Fermions are the “matter” particles, as in particles that have what is traditionally understood as mass.

But terms can get elusive, for example a massless photon can be measured to have a rest mass.

>> No.15050066

>>15050006

If you are moving close to the speed of light, but you are feeling no forces then your frame is inertial, you are at rest. When you fire the gun the bullet will leave the barrel at high speed.

You can measure the speed of the bullet going one way, and measure an observer outside of your system moving at nearly the speed of light in the opposite direction.

You might insist that the outside observer must have seen you fire your bullet and that the bullet went faster than light.

However, according to the observer time is moving more slowly in your system, and when you fired the bullet time moved even more slowly for the bullet because the bullet was moving faster.

Because the outside observer sees time moving slower for everything in your frame of reference, that observer will say that the bullet moved very close to the speed of light, but it did not exceed the speed of light.

Basically you have Lorentz’ gamma (v^2/c^2}. Every moving object in the scenario has its gamma and the gammas also add up, so that every moving object in the universe is moving relative to every other object in the universe at some fraction of he speed of light.

>> No.15050068

>>15050066
'Scientists' will literally defend this

>> No.15050071

>>15050006
>shoot a gun while traveling at the speed of light
How would you have the time to pull the trigger if time is stopped?

>> No.15050081

>>15050060
>photon can be measured to have a rest mass.
How do you measure mass directly? Or did you mean momentum?

>> No.15050135

>>15050060
Fermions are particles that have a spin of 1/2, 3/2, etc.
It has nothing to do with having mass.
In fact, many bosons have mass

>> No.15050138

>>15050006
You can test that at the velocity of the bullet, you don't need light speed.

>> No.15051996
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15051996

>>15050068

I’ll be the first to admit to you that it appears to make no fucking sense. However, it produces reliable, predictive results. It’s all anybody’s got to make sense of this shit.