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| < Science ~ The relativistic mass of light? |
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 Posted:
Thu Sep 29, 2005 10:26 pm
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Joined: Jun 21, 2005
Posts: 264
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| cwes99_03 wrote: |
Relativistic energy is a misnomer. Light's energy + your kinetic energy = relativistic energy of the light wave.
Am I right? |
No. You are adding "kinetic" energy. But it depends on the direction you are actually traveling. If you travel away light's energy goes down. So you would have negative kinetic energy in your formula cwes. This is obvious proof that kinetic energy does not apply to light. Motion would always have positive kinetic energy right?
Thankyou,
Mitch Raemsch |
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| Posted:
Wed Oct 05, 2005 3:47 am
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Joined: Aug 04, 2005
Posts: 69
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Thus the fact that kinetic energy is a vector you dumby. Of course if I'm moving away then my kinetic energy is negative. The equation I suggested is still valid.
Light's energy + your kinetic energy = relativistic energy of the light wave.
In this case the value of the kinetic energy is negative. |
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| Posted:
Thu Oct 06, 2005 5:34 am
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Joined: Jun 21, 2005
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No negative kinetic energy!!!
Only positive vectors in every direction  |
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| Posted:
Thu Oct 06, 2005 3:44 pm
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Joined: Aug 04, 2005
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Hrmmm, re-reading that one. When we use two objects with momentum traveling toward each other, do we add their momentum when they colide and stick, or do we subtract one objects momentum from the others?
Kinetic energy is a product of momentum. When an object loses kinetic energy are we adding negative energy to the equation to calculate the loss of kinetic energy?
When an object hurtles toward my hand, and I say it is moving in the negative x direction, when I bring it to a stop do I add or subtract kinetic energy from the ball?
Thus is the point I was trying to make. Kinetic energy has a magnitude, and depending on the direction it is traveling has a momentum vector. So if we are traveling toward the light source, we are adding momentum to the light (by subtracting a negative value) based on the radial direction of the light being the positive direction.
Light has momentum, which is directly related to it's energy E=pc=h*(nu). Thus if our momentum is carrying us toward the light source our momentum is added to that of the light. If we are traveling away from the source, our momentum is subtracted from that of the light.
Am I wrong? |
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| Posted:
Thu Oct 06, 2005 11:08 pm
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Joined: Jun 21, 2005
Posts: 264
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You are wrong. Matter's energy doesn't effect light cwes. And by the way it is always a positive!
regards,
Nick |
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| Posted:
Fri Oct 07, 2005 3:09 am
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No??????
Are you sure?
What about the vibrational Raman Effect? |
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| Posted:
Fri Oct 07, 2005 3:19 am
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Joined: Jun 21, 2005
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I know you think you have what you don't. I pointed out to you where you are wrong.
Farewell cwes. |
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| Posted:
Sat Apr 05, 2008 2:12 am
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Joined: Jun 21, 2005
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Light is Unconcentrated mass density across the entire wave. A property of unconcentrated mass is that it does not weigh or resist. Mass of elementary particles is infinitely dense concentrated energy that weighs and resists changes of motion. Infinitely dense energy is matter.
Matter's motion through space can be toward or away from light's motion. It is this motion through space that energy shifts light. Matter's motion toward light causes its energy to go up or it is blueshifted. Moving through space away from light and light's energy goes down or is redshifted.
Mitch Raemsch |
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