English Dictionary

blue flash

名詞

(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.

日本語の意味

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。

At dawn, the scientists were thrilled to observe a fleeting blue flash above the sun's upper rim as the star crossed the horizon.

夜明けに、研究者たちは太陽が地平線を越える際に、太陽の上縁に一瞬現れた青い閃光を観測して興奮した。

意味（1）

(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.

意味（2）

(nuclear physics) A phenomenon sometimes observed when a criticality incident occurs in nuclear materials, inducing a discharge of radiation into the environment.

blue flashes （ plural ）