In some fairly recent experiments physicists have claimed to able to stop light entirely in super-cooled sodium.
by air
It moves it's slowest in the solid state
wood
Gases
No, light is at its fastest in a vacuum.
A planet travels slowest at its apogee.
In some fairly recent experiments physicists have claimed to able to stop light entirely in super-cooled sodium.
by air
It moves it's slowest in the solid state
surface wave
wood
Gases
Sound waves don't just travel the slowest in a vacuum, they don't travel at all. The reason is that sound waves, like all mechanical waves, need a medium to travel through.
Sound travels slowest through air because the particles in the air are spread apart.
surface waves because they are the last waves and also the slowest.
Radiowaves is the slowest light in movement. Radiowaves might not seem like light, but that would only be because our eyes can only detect the colors of the visible spectrum, not other kinds of light like radiowaves, infrared light, and X-Rays.Sorry.That's a good list of various forms of electromagnetic radiation ... visible, radio, x-rays, etc.They all travel at the same speed.