e=mc2 true or false?

[Friend of Bill]

Don't worry, I still give you an A.

 

[ZAnwar]

hahaha, thanks, oh and I did get a Level 6 (highest in the class, and I got it (only 1)) in my SATs, a couple of months ago.

I got the highest score in the class !
(NOT BRAGGIN OR NOTHIN)

 

[Friend of Bill]

Excellent! I've never been a physics expert although, I have met Dr. Glenn T. Seaborg!

 

[ZAnwar]

Has that man done anything famous ???

 

[Friend of Bill]

The inventor (since they are not natural elements) of Plutonium, Berkleyum (sp?) and Californium. He also did some A bomb work and received The Nobel Prize in Physics.

 

[ZAnwar]

Cool, actually Very cool.

And you actually met him.

Excellent !!!!!

 

[PiCTuREm3RolLin]

how do they even test the speed of light? Also answer me this.............if a beam of light is place on top of a car and the car is stopped. The speed of the light is 300000, but if the car travels and 100km/ph should the speed of the light be 300000 + 100?

 

[Cosmin]

Excellent : another reason to spend time here : doing my math homework ? Will you help me ? ( 40$/hour )

 

[artistxman]

The Austrailian is probably right, but wrong. Light is a constant, but it can be curved as it travels through gravitational fields between us and the the billion mile away object....therefore taking longer to get here than the actual distance.

 

[PiCTuREm3RolLin]

true............

 

[koko]

this is a very interesting subject and i find his theory fascinating. wonder if it'll hold up?

 

[Zedric]

Originally posted by Khayman
How did Einstein come up with E=mc² (E=mc^2)? Did he just dream it up? What does it have to do with Relativity, which deals with time dilation and length contraction at great velocities Well, the equations involving time dilation and length contraction have consequences. One of these is that as velocity increases, mass increases.

Well the E=mc² formula is acctually a lot bigger than that. It's just in certain conditions (slow speed, some stuff like that) that the other parts of the formula nears 0 and can be removed without affecting the result much.

 

[Zedric]

Originally posted by PiCTuREm3RolLin
how do they even test the speed of light?

Mirror /---------------- Receiver
       |
Mirror \---------------- Transmitter

Then you measure the time it takes for the light to reach the Receiver. Since the speed is so high you can measure the phase differance.

 

[PiCTuREm3RolLin]

true........but how do they knw that the mirror doesn't effect the speed of the light

 

[Zedric]

Because adding a third mirror won't change the result if the total distance is the same.

 

[RobbieSan]

the speed of light we have come to know and love was measured in a vaccuum.. outside of a vaccuum the speed will change in repect the material characteristics (ie. air, water).. other factors such as quantum forces also have an effect, although imperceptible to our five senses..

keep in mind that Einstein was working with what was available at the time and also doing his darndest to realize the nature of our universe through mathematics.. despite all that who has proven him wrong in a factual way yet? theories are only as good as the paper they're written on until they're proven in repeatable action..

there's sooooo much more to learn.. humanity is still a crawling baby right now in terms of our current state of development.. chances are good that E=MC^2 may need to be altered to conform to newly discovered physics attributes at they are made.. heck one small discovery in the world of quantum physics can change a lot of previous concepts and "understandings"..

 

[PiCTuREm3RolLin]

yeh.........

 

[Geffy]

Did you know that they were also able to get a particle to travel faster than a beam of light.

They fired an electron at high speed, and fired the light beam through a dense material and the electron reached the end first.

So we can travel faster than the speed of light...we just have to slow it down first.

Also if light could travel at infinite velocity at the big bang then surely we could travel faster than light now travels, or are we going to be slowly limited to the max speed that we can travel at as the speed of light decreases?

 

[Zedric]

Some danish scientists acctually "stopped" light. The sent a beam with a certain pattern into this thingy (right...). Then they could take the beam out again a little later if they wanted. Presto! Light memory. Then you could acctually walk faster than light!

 

[PiCTuREm3RolLin]

were did u read that?