Science question

britincali · Post by **britincali** » April 14th, 2010, 10:24 am

Heres a fun one I saw on another board...

Bob is driving his awsomely fast duramax at the speed of light, he turns on his headlights, what happens?

Nodge · Post by **Nodge** » April 14th, 2010, 10:30 am

Um......nothing?

Post by **AlisoBob** » April 14th, 2010, 10:36 am

If I'm driving at the speed of light, I am light.

britincali · Post by **britincali** » April 14th, 2010, 11:08 am

IMO if you could yurn them on the filaments would glow but nothing would come out of the bulb.

Thats if you could turn them on, according to Mr Einstein time stops at the speed of light so theres a bit of a conumdrum

Post by **AlisoBob** » April 14th, 2010, 11:13 am

Heres another one.....

Chris bolts on his new, ported blower... and scatters his powdered rods all over Barstow. Tox says " I told you so".

Question: How long will it be before Chris gets laid again??

90cr500guy · Post by **90cr500guy** » April 14th, 2010, 2:26 pm

britincali wrote:IMO if you could yurn them on the filaments would glow but nothing would come out of the bulb.

Thats if you could turn them on, according to Mr Einstein time stops at the speed of light so theres a bit of a conumdrum

They would light up just fine.
They dont know how fast they are going because they are part of the vehicle moving at speed

Post by **AlisoBob** » April 14th, 2010, 2:31 pm

186,000 miles per second is as a fast as light can go.. no more.

You cant just add on the speed of the moving vehicle.... dosent matter.

It take light 8 minutes to reach the earth from the sun.

The "headlight beams" on a speed of light rocket ship would reach us in 4 minutes by your math.....

....nope.

90cr500guy · Post by **90cr500guy** » April 14th, 2010, 2:37 pm

AlisoBob wrote:186,000 miles per second is as a fast as light can go.. no more.

You cant just add on the speed of the moving vehicle.... dosent matter.

It take light 8 minutes to reach the earth from the sun.

The "headlight beams" on a speed of light rocket ship would reach us in 4 minutes by your math.....

....nope.

No, I didnt say they would produce useable light, I just said the filaments would light up
Didnt you see the mythbusters episode with lauching a soccer ball off the back of a truck moving the same speed as the ball?

Post by **AlisoBob** » April 14th, 2010, 2:39 pm

90cr500guy wrote:Didnt you see the mythbusters episode with lauching a soccer ball off the back of a truck moving the same speed as the ball?

No, I was getting laid at the time.

Besides, Were talking Quantum Physics here, not bouncing balls.

Post by **MojoScojo** » April 14th, 2010, 5:33 pm

Light speed...
...How fast do electrons travel?
Could you even turn them on?

Post by **AlisoBob** » April 14th, 2010, 5:39 pm

Mojo is the smartest of us all.....

sabreguy · Post by **sabreguy** » April 14th, 2010, 7:16 pm

MojoScojo wrote: ...How fast do electrons travel?

That's easy............. they travel at LUDICROUS SPEED!!!!!!

Post by **MojoScojo** » April 14th, 2010, 7:36 pm

sabreguy wrote:
MojoScojo wrote: ...How fast do electrons travel?
That's easy............. they travel at LUDICROUS SPEED!!!!!!

There's the answer. They shine plaid.

britincali · Post by **britincali** » April 14th, 2010, 7:53 pm

MojoScojo wrote:Light speed...
...How fast do electrons travel?
Could you even turn them on?

IMO if you could turn them on the filaments would glow but nothing would come out of the bulb

britincali · Post by **britincali** » April 14th, 2010, 7:54 pm

Electrons have mass therfore they cannot travel at the speed of light.

Post by **MojoScojo** » April 14th, 2010, 7:57 pm

britincali wrote:Electrons have mass therfore they cannot travel at the speed of light.

Then neither can Bob in his Duramax. Both are pretty massive.

britincali · Post by **britincali** » April 14th, 2010, 8:18 pm

Post by **AlisoBob** » April 14th, 2010, 8:41 pm

britincali wrote:Electrons have mass therfore they cannot travel at the speed of light.

Electrons can absolutely travel at the speed of light.

Post by **MojoScojo** » April 14th, 2010, 8:48 pm

http://education.jlab.org/qa/electron_01.html

Post by **AlisoBob** » April 14th, 2010, 9:19 pm

According to Einstein's theory of special relativity, as an electron's speed approaches the speed of light, from an observer's point of view its relativistic mass increases, thereby making it more and more difficult to accelerate it from within the observer's frame of reference. Your link explains this Mojo.

The speed of an electron can approach, but never reach the speed of light in a vacuum, however, when relativistic electrons—that is, electrons moving at a speed close to the speed of light —are injected into a dielectric medium such as water, where the local speed of light is significantly less , the electrons temporarily travel faster than light in that medium.

That same effect could probably be demostrated in "super-conducting" materials as well.

Post by **MojoScojo** » April 14th, 2010, 9:29 pm

So what is light speed really? The speed of light is dependent upon the medium through which it travels.

Ok, getting pretty deep theorizing about what would really happen if something that couldn't happen did...

Break a fundamental law of physics and you have to rewrite the book.

Too much for my tiny little brain. I just wanna ride.

britincali · Post by **britincali** » April 14th, 2010, 10:12 pm

I knew this thread would end up cool

Anything with mass can only go 99.999999999999% the speed of light. (currently known)

90cr500guy · Post by **90cr500guy** » April 15th, 2010, 5:35 am

MojoScojo wrote:http://education.jlab.org/qa/electron_01.html

I read this and all I could think about was engine building.
If 200hp gets you down the 1/4 mile in 14 seconds
That does not mean 400hp will get you there in 7 seconds

Travis · Post by **Travis** » April 15th, 2010, 7:25 pm

The soccer ball idea is the same as if you were on a plane moving at the speed of a bullet and shot the gun toward the front. Some people think the bullet would fall out of the gun or that nothing would happen. I would not want to be the guy in front of the gun.

However light and its speed is a totally different beast than gun powder and lead.

britincali · Post by **britincali** » April 15th, 2010, 10:59 pm

If you fire a bullet in a plane towards the front of a plane traveling at say 1400 mph (rough guess on a bullett???) the bullett would be going 2800 mph.

Now if you fire it towards the rear it may fall out of the barrell.

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