Cod liver oil - a potentially toxic source of Vitamin A: Hypervitaminosis A can result from ingestion of too much vitamin A from diet, supplements, or prescription medications.
This visible light region consists of a spectrum of wavelengths that range from approximately 700 nanometers (abbreviated nm) to approximately 400 nm. Expressed in more familiar units, the range of wavelengths extends from 7 x 10 -7 meter to 4 x 10 -7 meter.
BACKGROUND AND THEORY. Light is a form of energy called electromagnetic radiation. It has wavelength and frequency. Wavelength, Î» (lambda), is the distance between adjacent wave crests. Visible. light has wavelengths in the 400 nm to 700 nm range. (1 nm = 10â9 m). Frequency, Î½ (nu), tells how many waves. pass by a point in a second.