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.
Answer by Connor (43). The spectrum is infinite-a photon of higher energy can always be created. Visible light ranges from about 400 to 800 nanometers, however, and most (60% +) of the radiation coming from the sun is in the visible spectrum.he visible light spectrum is about 3.5 x 10^{-26}% of the electromagnetic spectrum. The rest of the spectrum consists of other types of electromagnetic radiation like infrared and radio frequency radiation (on the low end) and gamma rays and x-rays (on the high end).