optics - How are water vapors not visible? - Physics Stack Exchange https://physics.stackexchange.com/questions/303804/how-are-water-vapors-not-visible
このページではfog, mist, steam cloudって表現が使われてた><
ESA - Water vapour and clouds https://www.esa.int/Applications/Observing_the_Earth/Water_vapour_and_clouds
雲?><;
What is it called when steam comes off of ice? - Quora https://www.quora.com/What-is-it-called-when-steam-comes-off-of-ice
"Strictly speaking it’s water vapour that sublimates from ice, only water vapour at 100°C or above is called steam."
らしい・・・><