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No.269　13/01/01 01:33
燻し銀三 ( 50代 ♂ Oe38xe ) あ+あ-

【Sunrise and Sunset】

I'm wondering if it's fine this morning.When looking at a sunset or sunrise over thehorison,they seem to look bigger than as they are.☀

When sunlight passes through the atmosphere,it reflects diffusely 乱反射 because of moisture and dust in the atmosphere,so the sky looks bluer.😃

The morning sun and evening sun pass through thicker parts in the atmosphere,so they reflect more diffusely.☀

As a result,blue lights disappear,and red lights of which wavelength are long remain in the atmosphere.The red is a color which makes a thing look bigger,so the sun also looks bigger.☀

As for both of the sunrise and sunset,upper part of the sun is close to the horizon,we call it the sunrise or the sunset. 🌅

However refraction 屈折 in the atmosphere makes the sun look as if it were higher as usual,so actual time of the sunrise and sunset become about 4 minutes earlier.The sun is brighter than other stars,so it looks like that.☀

Contrary to it,the moon and other planets aren't as bright as the sun.☀