[2027] Lightning Distance
Title Text:The index of radio refraction does have a lot of variation, which might throw off your calculations, so you can also look at the difference in brightness between the visible flash and more-attenuated UV and x-rays. Origin:https://xkcd.com/2027/ https://www.explainxkcd.com/wiki/index.php/2027:_Lightning_Distance 闪电距离…
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