When a gas is very hot, it doesn’t emit all wavelengths of light. Hot gases don’t produce a continuous emission spectrum. Black hydrogen absorption lines are at the same wavelength as the ...

This causes line emission spectra to be produced, as shown below. This is not a continuous spectrum as only light of specific frequencies and specific colours are produced. Different types of ...

Researchers have shown that even without altering the perovskite emissive layer, incorporating polycaprolactone-silver ...

Amplified spontaneous emission is a physical phenomenon that entails the amplification of the light spontaneously emitted by ...