Penetration Depth, Skin Depth
A very similar approach uses the penetration depth:
where is the penetration depth.
The skin depth is defined so that the wave satisfies:
where is the skin depth.
Physically, the penetration depth is the distance which the wave can travel before its intensity reduces by a factor of . The skin depth is the distance which the wave can travel before its amplitude reduces by that same factor.
The absorption coefficient is related to the penetration depth and skin depth by
Read more about this topic: Mathematical Descriptions Of Opacity
Famous quotes containing the words skin and/or depth:
“Anyone who tries to keep track of what is happening in China is going to end up by wearing all the skin of his left ear from twirling around on it.”
—Robert Benchley (1889–1945)
“You are now
In London, that great sea, whose ebb and flow
At once is deaf and loud, and on the shore
Vomits its wrecks, and still howls on for more.
Yet in its depth what treasures!”
—Percy Bysshe Shelley (1792–1822)