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 ...

Humans can only see less than 1% of the electromagnetic spectrum. Here’s why evolution may have intentionally hidden ...

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 ...

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?

The colors of the rainbow are all around us, but so are hues that most of us can't see, including ultraviolet — a wavelength that eludes many humans but, surprisingly, many animals can perceive.