When studying the solar spectrum, researchers often search for specific emission lines: prominent wavelengths emitted by ions as their electrons transition from higher to lower energy levels.

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 ...

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 ...

Moreover, they maintained stable green emission purity and a narrow emission spectrum (94 meV) across various operating currents. The research was led by Dr. Ru-Jong Jeng from the Institute of ...

(b-d) Optical characterization of this aspect ratio lattice, including white-light dispersions, spectra, amplified spontaneous emission by pump excitation, and the corresponding normalized ...

In trials using phantom and living subjects in room-temperature settings, the PTG platform showed fully passive and reliable detection of human vital signs such as temperature, heart rate and ...