Sunday, December 27, 2009

Can light potentially move an object physically?

for example in space, objects are virtually weightless i am wondering if light, cud transfer its energy into another object and move it.Can light potentially move an object physically?
Yes Radiation Pressure of Light can be used to move Objects, According to Einstein Relation E = pc Photons Have a Momentum so Light Reflecting off a Surface Generate a Small amount of Radiation Pressure, This Method is Proposed to use on Solar Sails.





http://en.wikipedia.org/wiki/Solar_SailCan light potentially move an object physically?
Yes it can it can be absorbed by an object which then gains its momentum, it is the same principle by which solar sails work.





If you think about it it must transfer momentum as the light has a relativistic momentum, if it was absorbed and the absorber didn't move momentum would not be conserved which is a central principle of physics.
Light is composed of photons that have a mass and a momentum. So yes it can.





Actually, the famous Compton experience showed that when light in incident on an electron is moves it and loses a part of its energy.
Yes, it can. A solar sail could accelerate a spacecraft to extreme velocity, without using any propellant at all.


http://en.wikipedia.org/wiki/Solar_sail
Absolutely. Check out this link.
yes they can as they are a form of energy
A laser might work.
light is not matter. so no

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