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#31
Apr 2 2009 12:47pm
that would be true for the REST mass and rest energy, for example rest mass and energy of a photon is 0. Its relativistic mass would be E/c^2 or hf/c^2
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#32
Apr 2 2009 03:30pm
Dude you really have no clue
As a spaceship approaches the speed of light its mass increases... it doesn't approach 0.
You completely misunderstand the E=mc^2 formula.
It's a conversion formula for when energy changes into mass or mass changes into energy... not a ratio between the energy and mass in any given object.

This post was edited by taekvideo on Apr 2 2009 03:35pm
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#33
Apr 3 2009 10:44am
Quote (AEtheric @ Thu, Jan 15 2009, 07:27pm)
Okay, lets assume special relativity is right.
If you have a spaceship approaching the speed of light, its mass converts to energy.
If the mass converts to energy, then that means that the mass is 0.
According to E=mc^2, E is the energy, m is the mass, and c is the speed; so if mass is 0 then the energy is 0.
Thus the spaceship has no mass and no energy.
How can one miss this simple contradiction?


thats just it... it will never reach the point where its mass converts.

the energy required is just too much.

and as taekvideo said... the closer you approach to light the higher your mass is, thats why the required energy to go faster increases.

This post was edited by EKMEnforcer on Apr 3 2009 10:44am
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#34
Apr 3 2009 07:44pm
Quote (Bes @ Thu, Apr 2 2009, 06:47pm)
that would be true for the REST mass and rest energy, for example rest mass and energy of a photon is 0. Its relativistic mass would be E/c^2 or hf/c^2


Thanks for a legitimate answer with no bullshit or flaming. Do you know if relativistic mass is detectable?
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#35
Apr 5 2009 01:57pm
Quote (AEtheric @ Thu, Jan 15 2009, 10:27pm)
Okay, lets assume special relativity is right.
If you have a spaceship approaching the speed of light, its mass converts to energy.
If the mass converts to energy, then that means that the mass is 0.
According to E=mc^2, E is the energy, m is the mass, and c is the speed; so if mass is 0 then the energy is 0.
Thus the spaceship has no mass and no energy.
How can one miss this simple contradiction?

thats why einstein doesnt believe objects with considerable mass can reach the speed of light. a photon is essentially massless.
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