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The Planck relation [1] [2] [3] (referred to as Planck's energy–frequency relation, [4] the Planck–Einstein relation, [5] Planck equation, [6] and Planck formula, [7] though the latter might also refer to Planck's law [8] [9]) is a fundamental equation in quantum mechanics which states that the energy E of a photon, known as photon energy, is proportional to its frequency ν: =.
In frequency (and thus energy), UV rays sit between the violet end of the visible spectrum and the X-ray range. The UV wavelength spectrum ranges from 399 nm to 10 nm and is divided into 3 sections: UVA, UVB, and UVC. UV is the lowest energy range energetic enough to ionize atoms, separating electrons from them, and thus causing chemical reactions.
Photon energy is the energy carried by a single photon. The amount of energy is directly proportional to the photon's electromagnetic frequency and thus, equivalently, is inversely proportional to the wavelength. The higher the photon's frequency, the higher its energy. Equivalently, the longer the photon's wavelength, the lower its energy.
The flicker fusion threshold, also known as critical flicker frequency or flicker fusion rate, is the frequency at which a flickering light appears steady to the average human observer. It is a concept studied in vision science , more specifically in the psychophysics of visual perception .
In some cases, two energy transitions can be coupled so that, as one system absorbs a photon, another nearby system "steals" its energy and re-emits a photon of a different frequency. This is the basis of fluorescence resonance energy transfer , a technique that is used in molecular biology to study the interaction of suitable proteins .
In 2014, Berg introduced Lovetuner in Malibu, California. [6] The Lovetuner is a small flute worn as a necklace and is calibrated to 528 Hz. [7] Berg created the Lovetuner to contribute to wellness practices and to offer a tool for meditation and mindfulness.
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In this case the FFT frequency bins end up to be at "nice" frequencies for humans. Also allows integer division to 25 Hz and multiples of 25 Hz (50 Hz, 100 Hz, 200 Hz); 26.2144 MHz = 100×2 18 = 25×2 20. 26.5625 Fibre Channel: Quadrupled to 106.250 MHz Fibre Channel clock 26.601712 PAL