Example for Poynting's Theorem

[shynee]

Hi,

Anyone knows a good example to aply Poynting's Theorem?

The one thas defines the conversation of energy in the electromagnetic field?

Regards Martin

 

[Andy Resnick]

Laser tweezers?

 

[shynee]

Laser tweezer?

I don't have a clue, how they work.

Which parts of the Equaction are involved?

The integral of the Poyntig Vektors, and which more?

 

[pam]

Absorbed sunlight, heating a surface.

 

[Andy Resnick]

Laser tweezer?

I don't have a clue, how they work.

Which parts of the Equaction are involved?

The integral of the Poyntig Vektors, and which more?

A laser tweezer maintains a trapped object by light scattering. Momentum from the light is transferred to the trapped particle. Alternatively, the focused beam of light creates a potential well for the particle.

There's lots of material out there- my understanding was that you were looking for an interesting problem to solve. Is that wrong?