מה קובע את

מה קובע את מידת ה-nanometer במנורות אולטרא סגולות,
האם זה ה-watt או ה-volt או משהו אחר?

באתר של NAS – NASA Advance Supercomputing Division, תוכל למצוא ש:
"All energies that move at the speed of light are collectivelly referred to as electromagnetic radiation or ''light''. Various types of light differ in their wavelength, frequency and energy; higher energy waves have higher frequencies and shorter wavelengths. Pigments inside the retina of our eyes absorb wavelengths of light between 400nm-700nm, collectively referred to as ''visible light''. A "nm'''' is a nanometer which is one billionth, or 10e-9, meters.

Stratospheric Oxygen and Ozone molecules absorb 97-99% of the sun''s high freguency Ultraviolet light, light with wavelengths between 150 and 300nm. Ultraviolet-B(UV-B) is a section of the UV spectrum, with wavelengths between 270 and 320nm. ".

באתר של Citizen Explorer Satellite, תוכל למצוא ש:
"Light travels as waves. The different colors of light in a rainbow each represent a different wavelength of light. Red has long wavelengths, and violet has shorter ones. Ultraviolet light has shorter wavelengths and more energy than violet light.…The wavelengths of ultraviolet radiation are typically considered to range between 10 and 400 nm. (1 nanometer = 10^-9 meters)…"

באתר של GMC, תוכל למצוא ש:
"…UV-light is part of the invisible electromagnetic spectrum covering wavelengths from 1800 to 4000 angstrom Units. An Angstrom (A°) is a measure of wavelength equal to 10-10 meter or 0.1 nanometer (nm).".

NASA Advance Supercomputing (NAS) Division – About NAS – Educational Resources – Ultraviolet Radiation

Citizen Explorer Satellite – Science – Uv Light

GMC – Global Manufacturing Corporation – Inspection of scuba dive gear by Ultraviolet Light

התשובה ניתנה על ידי רחל דרוסקין מצוות מידעני KOL

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