Other Drugs. Drugs used for treating epilepsy, such as phenytoin and carbamazepine, can reduce thyroid levels. Certain antidepressants may cause hypothyroidism, although this is rare. Interferons and interleukins are used for treating hepatitis, multiple sclerosis, and other conditions.
Visible light has frequencies ranging from 4*10 14 Hz to 8*10 14 Hz (400 THz to 800 THz) and wavelengths from 3.8*10 -7 m to 7.5*10 -7 m (380 nm to 750 nm). Red light has the lowest frequency (longest wavelength) and violet light has the highest frequency (shortest wavelength) of visible light.
Relationship between color and light Different wavelengths, and  thus different frequencies, of light are perceived by the human eye  as colors. The visible light spectrum râ¦anges from 400nm to 700nm,  with 400nm being perceived as violet and 700nm being perceived as  red light. The energy of the light dictates its color.