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Although long-wavelength ultraviolet is not considered an ionizing radiation because its photons lack sufficient energy, it can induce chemical reactions and cause many substances to glow or fluoresce. Many practical applications, including chemical and biological effects, are derived from the way that UV radiation can interact with organic ...
The electromagnetic waves in each of these bands have different characteristics, such as how they are produced, how they interact with matter, and their practical applications. Radio waves, at the low-frequency end of the spectrum, have the lowest photon energy and the longest wavelengths—thousands of kilometers, or more.
Ultraviolet astronomy is the observation of electromagnetic radiation at ultraviolet wavelengths between approximately 10 and 320 nanometres; shorter wavelengths—higher energy photons—are studied by X-ray astronomy and gamma-ray astronomy. [1] Ultraviolet light is not visible to the human eye. [2]
Bees and many other insects can detect ultraviolet light, which helps them find nectar in flowers. Plant species that depend on insect pollination may owe reproductive success to their appearance in ultraviolet light rather than how colorful they appear to humans. Bees' long-wave limit is at about 590 nm. [41]
Long wave UV that extends from 320 to 400 nm, also called UV-A, Medium wave UV that extends from 280 to 320 nm, also called UV-B, Short wave UV that extends from 200 to 280 nm, also called UV-C. (These terms should not be confused with the parts of the radio spectrum with similar names.)
Ultraviolet light can cause burns to skin ... Microwaves are electromagnetic waves with wavelengths ranging from as long as one meter to as short as one millimeter ...
Spectral intensity of sunlight (average at top of atmosphere) and thermal radiation emitted by Earth's surface. Shortwave radiation (SW) is thermal radiation in the optical spectrum, including visible (VIS), near-ultraviolet (UV), and near-infrared (NIR) spectra.
Ultraviolet: 10 nm – 400 nm: 30 PHz – 750 THz ... long-distance radio telecommunications, wireless LAN, amateur radio ... The terms quasi-optical waves and ...