Bounce Light off Light?

What happens when two photons collide?

 

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You get a photon.

If they have enough energy, you get gamma-gamma interaction.

 

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define a photon with a radio size perpetration?

Meaning if i sent a single radio photon covering a football field in wavelength and then another (one per se photon) from an angle to interract, then please tell us all how your cell phone works, within the cosmic rain from the sun and everyone elses cell phones?

otherwise, read someone elses idea

or even look into coherence

in each case, mass is where the interactions take place

 

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http://www.google.com/search?q=photon collider&sourceid=ie7&rls=com.microsoft:en-US&ie=utf8&oe=utf8

And references contained therein.

 

Not always. You could get an electron positron pair.

 

Photons cannot interact directly with photons. They must create a charged matter/antimatter pair which then interacts with the other photon, before annihilating back into the original photon.

 

So, a fundamental string can't interact directly with another fundamental string?

 

Here you go, a handy wiki:
http://en.wikipedia.org/wiki/Gamma-gamma_physics

 

A fundamental string that looks like a photon. Why is this hard to understand?

 

Why can't fundamental strings interact with other fundamental strings? That seems odd. If particles are made of fundamental strings, and particles can interact, why can't fundamental strings?

 

They can. That isn't what Ben said.

 

So, what happens when a fundamental string colides with another fundamental string?

 

They will vibrate surely, and create a force?

 

They interact. They join, making a string of longer length, their oscillations interact, they then split and go their separate ways. We see that, on a macrosopic scale, as particles interacting.

 

I have a question that was never answered.

How do the the strings interact with the particles in the Dirac Sea? I once asked, do the vibrations of the strings in the Dirac Sea give rise to the buffeting of electrons in the real vacuum?

 

If the transverse momentum transfer is large, one or both electrons can be deflected enough to be detected, this is called tagging.

WIKI

And this is why I suggested using a laser in space that would shield the Earth from the suns rays to prevent global warming. If you could put the laser between the sun and earth in a geosynchronous orbit and let the light from the laser make a curtain of light shielding the earth from the suns rays it could bring down the temperatures on earth . How many lasers that would be needed would be depending on how much temperature drop you would need. The laser satellite would operate using photovoltaics to use the sun itself as an energy source as well.

 

It depends on what the string's properties are.

If all fundmaental strings had the same properties, how could we have different particles in the universe?

 

Ben, can you answer my question.

 

There is no Dirac Sea. If there were, the cosmological constant would be much larger than it actually is.

 

Please eliviate my confusion here. I thought all fundamental strings were photons, and that all particles are made of photons. Else, why would the universe eventually decay into a state solely of photons?