(Phys.org) —It is widely known that the optical properties of certain materials can be modified by using lasers to control the quantum states of their optical electrons. Lasers that can generate ultra ...

A separate team analyzing broad hydrogen lines in several of the James Webb Space Telescope’s “little red dots” found that electron scattering may make those lines appear wider than the gas motion ...

Researchers have developed a new technology that can shape the spectrum of light emitted from a laser frequency comb across the visible and near-infrared wavelengths with more precision than ...

Astronomers have now observed the radio emission from the neutral hydrogen gas (HI) in a nearby galaxy. Hydrogen gas emits radio emission in a spectral line at a very specific frequency of 1420 MHz.

Ocean Insight’s Liquid Transmission Measurement System (LTMS) provides real-time, in-line monitoring of liquid colouring and coating applications used across the consumer electronics and food ...

The Zeeman effect and optical pumping are two mechanisms capable of inducing polarization signals in the spectral lines that originate in the outer layers of stellar atmospheres. The Zeeman effect 12 ...

Spectral lamps radiate line spectra of various gases and metal vapors with high brightness and spectral purity. Spectral lamps are used in conjunction with narrow bandpass filters for applications ...