Giochi di luce

Energy From Nuclear Reaction

Initially, the energy a photovoltaic cell uses comes from the sun. There, hydrogen nuclei fuse with each other to form helium nuclei and energy. It takes four hydrogen nuclei to form one helium nucleus.

 

 

Photons

Photons are the energy byproducts of the nuclear reaction in the sun. They are essentially "packets of energy."

 

 

Electrons Absorb Photons

When photons from the sun hit a photovoltaic cell, they may be absorbed by an electron. With this extra energy, the electron may become excited and break off its atom, and eventually begin an electric current.

 

Silicon Wafer

The silicon wafer is the basic starting material of photovoltaic cells.

As other materials are added to both sides of the cell, the silicon remains neutral,

and acts as a barrier layer. This is because of its four valence electrons.

 

 

 

 

Here we have three lenses and three light sources. The middle lens has photon mapping turned off. You can also see some reflective caustics from the brass box (some light reflects and hits the blue box, other light bounces through the nearest lens and is focused in the lower left corner of the image).