Index of Refraction is many scatterers

1
Index of Refraction is many scatterers
Transmitted plus scattered
Scattered radiation cancels out
All energy ends up in forward direction with
phase shift proportional to distance
New wavelength
2
Scintillation
ground
dim
bright
3
Adaptive Optics
4
Adaptive Optics
5
Adaptive Optics
6
Scintillation
7
Refractive Scintillation
8
Diffraction and resolution
9
Diffractive Scintillation
Airy disk
distance
1.22?/D
10
Diffractive Scintillation
E
x
I
x
11
Diffractive Scintillation
E
x
I
x
12
For a rarified gas
lteifi eifj gt 0
When i? j
lt?Ai2gt
13
Interferometery and aperture synthesis
At separation D, the signal is proportional to
http//www.geocities.com/capecanaveral/2309/page3.
html?200711