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-as of [20 SEPTEMBER 2024]–
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“movement of energetic particles”
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-in ‘physics’, radiation is the ’emission’ or ‘transmission’ of ‘energy’ in the form of ‘waves’ or ‘particles’ through ‘space’ or through a ‘material medium’-
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(this includes…)
(‘electromagnetic radiation’)
(‘heat’ / ‘radio waves’ / ‘visible light’ / ‘x-rays’ / ‘gamma radiation’ (γ))
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(‘particle radiation’)
(‘alpha radiation’ (α) / ‘beta radiation’ (β) / ‘neutron radiation’)
(‘particles’ of non-zero ‘rest energy’))
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(‘acoustic radiation’)
(‘ultrasound’ / ‘sound’ / ‘seismic waves’)
(dependent on a ‘physical transmission medium’)
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(‘gravitational radiation’)
(‘radiation’ that takes the form of ‘gravitational waves’, or ‘ripples’ in the ‘curvature’ of ‘spacetime’)
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(‘radiation’ is often categorized as either ‘ionizing’ or ‘non-ionizing’ depending on the energy of the radiated particles)
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(‘ionizing radiation’ carries more than 10 eV, which is enough to ionize atoms and molecules, and break chemical bonds)
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(this is an important distinction due to the large difference in ‘harmfulness’ to ‘living organisms’)
(a common source of ‘ionizing radiation’ is radioactive materials that emit α, β, or γ radiation, consisting of ‘helium nuclei’, ‘electrons’ or ‘positrons’, and ‘photons’, respectively)
(other sources include ‘X-rays’ from ‘medical radiography examinations’ and ‘muons’, ‘mesons’, ‘positrons’, ‘neutrons’, and other ‘particles’ that constitute the ‘secondary cosmic rays’ that are produced after ‘primary cosmic rays’ interact with ‘earth’s atmosphere’)
(‘gamma rays’, ‘X-rays’, and the ‘higher energy range’ of ‘ultraviolet light’ constitute the ‘ionizing part’ of the ‘electromagnetic spectrum’)
(the lower-energy, longer-wavelength part of the spectrum including ‘visible light’, ‘infrared light’, ‘microwaves’, and ‘radio waves’ is ‘non-ionizing’; its ‘main effect’ when ‘interacting’ with ’tissue’ is ‘heating’)
(this type of ‘radiation’ only damages cells if the intensity is high enough to cause ‘excessive heating’)
(‘ultraviolet radiation’ has some features of both ‘ionizing’ and ‘non-ionizing’ radiation)
(while the part of the ‘ultraviolet spectrum’ that penetrates the earth’s atmosphere is ‘non-ionizing’, this ‘radiation’ does far more damage to many ‘molecules’ in ‘biological systems’ than can be accounted for by ‘heating effects’, ‘sunburn’ being a well-known example)
(these properties derive from ultraviolet’s power to alter ‘chemical bonds’, even without having quite enough ‘energy’ to ‘ionize atoms’)
(“rape” in lieu of “murder”)
(“like candy from a baby!”)
(the word ‘radiation’ arises from the phenomenon of ‘waves’ radiating (i.e., “traveling ‘outward’ in all ‘directions'”) from a ‘source’)
(this aspect leads to a system of ‘measurements’ and ‘physical units’ that are applicable to all types of ‘radiation’)
(because such ‘radiation’ expands as it passes through ‘space’, and as its ‘energy’ is ‘conserved’ (in ‘vacuum’), the intensity of all types of ‘radiation’ from a ‘point source’ follows an ‘inverse-square law’ in relation to the ‘distance’ from its ‘source’)
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(this law does not apply close to an extended source of radiation or for ‘focused beams’)
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*👨🔬🕵️♀️🙇♀️*SKETCHES*🙇♂️👩🔬🕵️♂️*
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👈👈👈☜*“ELECTRO-MAGNETISM”* ☞ 👉👉👉
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💕💝💖💓🖤💙🖤💙🖤💙🖤❤️💚💛🧡❣️💞💔💘❣️🧡💛💚❤️🖤💜🖤💙🖤💙🖤💗💖💝💘
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*🌈✨ *TABLE OF CONTENTS* ✨🌷*
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🔥🔥🔥🔥🔥🔥*we won the war* 🔥🔥🔥🔥🔥🔥