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紫外線

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The ozone layer visible from space at Earth's horizon as a blue band of afterglow within the bottom of the large bright blue band that is the stratosphere, with a silhouette of a cumulonimbus in the orange afterglow of the troposphere.

オゾン層の仕組みと地球環境への影響紫外線から生命を守る天然の盾

オゾン層紫外線成層圏フロンガス
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Levels of ozone at various altitudes (DU/km) and blocking of different bands of ultraviolet radiation: In essence, all UVC is blocked by diatomic oxygen (100–200 nm) or by ozone (triatomic oxygen) (200–280 nm) in the atmosphere. The ozone layer then blocks most UVB. Meanwhile, UVA is hardly affected by ozone, and most of it reaches the ground. UVA makes up almost all UV light that penetrates the Earth's atmosphere.

紫外線（UV）の性質と影響科学的メカニズムから実用的な応用まで

紫外線UVAUVBUVC
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The Sun, as seen from low Earth orbit overlooking the International Space Station. This sunlight is not filtered by the lower atmosphere, which blocks much of the solar spectrum.

太陽光の科学地球を育むエネルギーの正体と特性

太陽光電磁波可視光線赤外線
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Kepler's Supernova observed in visible light, infrared, and X-rays by NASA's three Great Observatories

宇宙望遠鏡の優位性と天体観測のメカニズム

宇宙望遠鏡地上望遠鏡電磁波大気揺らぎ
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The Sun, as seen from low Earth orbit overlooking the International Space Station. This sunlight is not filtered by the lower atmosphere, which blocks much of the solar spectrum.

太陽光の科学地球の生命を支えるエネルギーの正体

太陽光電磁波可視光線赤外線
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The top image shows the formation mechanism of a normal proton aurora while the bottom image shows the formation mechanism of a patchy aurora.

火星のオーロラ地球とは異なる発生メカニズムと観測の歴史

火星オーロラ磁場MAVEN
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An illustration of the relative abilities of three different types of ionizing radiation to penetrate solid matter. Typical alpha particles (α) are stopped by a sheet of paper, while beta particles (β) are stopped by 3mm aluminum foil. Gamma radiation (γ) is dampened when it penetrates lead. Note caveats in the text about this simplified diagram.[clarification needed]

放射線とは何か？電磁波と粒子線の種類から人体への影響までを解説

放射線電磁波電離放射線非電離放射線
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Levels of ozone at various altitudes (DU/km) and blocking of different bands of ultraviolet radiation: In essence, all UVC is blocked by diatomic oxygen (100–200 nm) or by ozone (triatomic oxygen) (200–280 nm) in the atmosphere. The ozone layer then blocks most UVB. Meanwhile, UVA is hardly affected by ozone, and most of it reaches the ground. UVA makes up almost all UV light that penetrates the Earth's atmosphere.

紫外線（UV）の性質と影響光の科学から実用的な応用まで

紫外線UVAUVBUVC
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Levels of ozone at various altitudes (DU/km) and blocking of different bands of ultraviolet radiation: In essence, all UVC is blocked by diatomic oxygen (100–200 nm) or by ozone (triatomic oxygen) (200–280 nm) in the atmosphere. The ozone layer then blocks most UVB. Meanwhile, UVA is hardly affected by ozone, and most of it reaches the ground. UVA makes up almost all UV light that penetrates the Earth's atmosphere.

紫外線（UV）の性質と影響科学的メカニズムから実用的な応用まで

紫外線UVAUVBUVC
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Women with freckles

そばかすの生物学と遺伝学日光とMC1R遺伝子の関係

そばかすMC1R遺伝子メラニン紫外線
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