visible light
81light — Technically, light is electromagnetic radiation visible to the human eye. Light usually means the electromagnetic waves with a wavelength from .000075 cm. (red) to .000038 cm. (violet) …
82visible — adjective 1》 able to be seen. ↘Physics (of light) within the range of wavelengths to which the eye is sensitive. 2》 able to be perceived or noticed easily. ↘in a position of public prominence. 3》 relating to imports or exports of tangible …
83light-emitting diode — noun a rectifying semiconductor device which converts electrical energy into electromagnetic radiation of a wavelength in or near the visible spectrum of light …
84light unit — noun a measure of the visible electromagnetic radiation • Hypernyms: ↑electromagnetic unit, ↑emu • Hyponyms: ↑illumination unit, ↑luminance unit, ↑luminous flux unit, ↑luminous intensity unit, ↑ …
85Ultraviolet–visible spectroscopy — Beckman DU640 UV/Vis spectrophotometer. Ultraviolet visible spectroscopy or ultraviolet visible spectrophotometry (UV Vis or UV/Vis) refers to absorption spectroscopy or reflectance spectroscopy in the ultraviolet visible spectral region. This… …
86Ultraviolet-visible spectroscopy — or ultraviolet visible spectrophotometry (UV/ VIS) involves the spectroscopy of photons in the UV visible region. It uses light in the visible and adjacent near ultraviolet (UV) and near infrared (NIR) ranges. In this region of the… …
87Black light — [ FWHM spectral bandwidth of the 370nm peak is about 20nm.] A Black light or UV Light is a lamp emitting electromagnetic radiation that is almost exclusively in the soft near ultraviolet range, and emits very little visible light. The black light …
88Incandescent light bulb — The incandescent light bulb, incandescent lamp or incandescent light globe is a source of electric light that works by incandescence, (a general term for heat driven light emissions which includes the simple case of black body radiation). An… …
89Speed of light — The speed of light in the vacuum of free space is an important physical constant usually denoted by the letter c . [NIST and BIPM practice is to use c 0 for the speed of light in vacuum in accord with international standard ISO 31 5. See… …
90Organic light-emitting diode — Demonstration of a flexible OLED device A green emitting OLED device An …
