Anonymous ID: 5d197f June 21, 2018, 11:44 p.m. No.1858565   ๐Ÿ—„๏ธ.is ๐Ÿ”—kun   >>8586 >>8610 >>8622

>>1858271

 

Atmospheric refraction is the deviation of light or other electromagnetic wave from a straight line as it passes through the atmosphere due to the variation in air density as a function of height.[1] This refraction is due to the velocity of light through air, decreasing (the refractive index increases) with increased density. Atmospheric refraction near the ground produces mirages and can make distant objects appear to shimmer or ripple, elevated or lowered, stretched or shortened, with no mirage involved.

Anonymous ID: 5d197f June 21, 2018, 11:55 p.m. No.1858634   ๐Ÿ—„๏ธ.is ๐Ÿ”—kun   >>8641

>>1858622

this is obvious. light can only travel as fast as the medium it is within.

you think light travels at the same speed through a liquid than it does through a vaccum? air is also a medium. it is comprised of gases! depending on pressure, the density of the gases may differ. as a result, this may affect light (and sound!). for fuck sake