We learn about the planets, stars, and galaxies by their light—visible light, and also shorter-wavelength ultraviolet and longer-wavelength infrared light, invisible to the eye but detectable by ...

As the U.S. continues to wait for newer sunscreen ingredients, patients should use tinted sunscreens to protect against visible light that causes photodamage, melasma and hyperpigmentation, according ...

The northern lights may be visible in portions of Wisconsin on Friday and Saturday nights, according to the NOAA's Space ...

AMONG workers in the field of mammalian embryo culture the suspicion has existed that ova exposed to visible light lose some of their capacity for cleavage. In the interest of clarification the ...