The electromagnetic spectrum includes all forms of light energy, known as electromagnetic radiation ... A spectrophotometer is an instrument that performs measurements within the wavelength range of ...

Red light therapy, for example (which is on the visible light spectrum), works mostly at the dermis and epidermis of the skin ...

It is a form of electromagnetic radiation with a wavelength shorter (100 - 400 nanometers) than that of visible light (400- 780nanometers), meaning that UV light is more energetic. Light Spectrum.

On the other side of the spectrum, light with wavelengths slightly shorter than 380 nanometers is known as ultraviolet. Beyond that come X-rays and beyond that still come gamma rays. The ability ...

and a red wave is 700 nanometers. This range of colors is all that the human eye is capable of seeing—our "visible light spectrum." But what happens when waves get even longer or shorter?