Last Updated
：2025/11/22
blue flash
Noun
Japanese Meaning
太陽が水平線近くにある日の出または日の入りの際、大気中の光の屈折により、太陽の上縁付近に一瞬だけ現れる青い閃光現象。 / 気象学や天文学における非常に稀な現象で、太陽の位置が水平線を横切る時または直下にある時に観測される。
Sense（1）
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(meteorology, astronomy) A very rare phenomenon observed in the morning or evening when the sun is crossing or immediately below the horizon, in which a momentary flash of blue light appears above the upper rim of the solar disk, caused by refraction of light in the atmosphere.
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blue flash
At dawn, the scientists were thrilled to observe a fleeting blue flash above the sun's upper rim as the star crossed the horizon.
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At dawn, the scientists were thrilled to observe a fleeting blue flash above the sun's upper rim as the star crossed the horizon.
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