An ultraviolet photon-counting dual-comb spectrometer. Two ultraviolet frequency combs of slightly different pulse repetition frequencies are generated at very low light levels by nonlinear frequency ...

What is UV-Vis Spectroscopy? UV-Vis spectroscopy, short for ultraviolet-visible spectroscopy, is an analytical technique that measures the absorption or reflectance of light by a sample in the ...

I was reading a children's book about insects to my daughter, and it said that bees see colors differently than humans do. My daughter immediately asked, in short succession: "What colors do they see?

image: a, Schematic diagram illustrating simultaneous broadband 2nd-10th HHG via cascaded 2nd-NL QPM up-conversion upon a mid-IR pump femtosecond laser in CPPLN. b, Schematic diagram illustrating ...

The world’s astronomers now have access to amazing details about the invisible ultraviolet light from the Sun, thanks to a new ‘spectral atlas’ prepared with the SUMER instrument on the SOHO ...

Astronomers working with data from the Hobby-Eberly Telescope Dark Energy Experiment, known as HETDEX, say they have produced one of the largest and sharpest three-dimensional maps to date of ...

The next time you see the UV index in the weather forecast, look more closely. You can protect yourself from too much sun.