Recent content by shantanuphadke

I was thinking in this way, Transmission through the back silvered black silvered solar cell is zero. So Energy is either absorbed or reflected. Does the absorption remain the same? Thank you!

Hello I am trying to fabricate a Si reflecting solar cell. When a Solar cell is exposed to radiation and connected to external circuit, the current will start to flow through the circuit. So I want to know how does the Reflectivity of silicon change with the current( or conductance).[...

but when particle absorbs light, it gets excited and in the process of de-excitation it emmits light.But that emmited light can follow any direction except the direction in which photon got excited.so we could expect intensity to decrease a lot but it is not observed ( appreciable intesity...

what is the mechanism by which light changes its speed and wavelength while traveling from one medium to other. I know it is c/n or lamda/n and know it comes from maxwells equations, but what is the physical reason behind this?