Title: Dipole in Abstract Fractal Art
1Dipole in Abstract Fractal Art
From http//www.raygirvan.co.uk/apoth/dipole.jpg
2What would the sky look like if you saw in the
Uvb (290-320 nm) or near IR (700-1500 nm) instead
of the visible (400-700 nm)?
IR
VIS
UVb
3Rayleigh Scattering Photon Directions
From http//www.srrb.noaa.gov/highlights/redsky/p
age3.html
4Whitening of the horizon Rayleigh Scattering
followed by Rayleigh Extinction
From http//www.m-why.com/archives/2005/03/
5Rayleigh Scattering (light scattering by air as
dipole radiation)
From Liou pg 93. ? is the molecular anisotropy
parameter as the polarizability is really a
tensor. The refractive index relationship is in
relation to the polarizability of air. ? 0.035
for air.
Dry air, 15 C, 101325 Pa, 0.045 CO2 by volume,
vacuum ? in microns, (Birch, Metrologia, 1994,
31, 315). From http//www.kayelaby.npl.co.uk/gene
ral_physics/2_5/2_5_7.html.
Dry air, t in Celcius, P in Pascal, 0.045 CO2 by
volume, Birch, Metrologia, 1994, 31, 315). From
http//www.kayelaby.npl.co.uk/general_physics/2_5/
2_5_7.html.
Number concentration of air molecules.
6Dry Air Refractive Index
7Rayleigh Scattering (light scattering by air as
dipole radiation)
8Rayleigh Scattering (light scattering by air as
dipole radiation)
9Rayleigh Scattering (light scattering by air as
dipole radiation)
42.3 of Total Energy, TOA
10Rayleigh Scattering (light scattering by air as
dipole radiation)
1.5 of Total Energy, TOA
11Rayleigh Scattering (light scattering by air as
dipole radiation)
6.3 of Total Energy, TOA
12Rayleigh Scattering (light scattering by air as
dipole radiation)
0.5 of Total Energy, TOA
13Rayleigh Scattering In Perspective Relative to
Absorption
14Angular Dependence of Rayleigh Scattering (dipole)
From http//qels.com/theory/rayleighscattering/ma
ss.cfm http//www.bo.astro.it/sait/spigolature/spi
go402base.html
Horizontal E-field
Vertical E-field
Dipoles dont radiate in the direction they are
undergoing linear ocsillation.
From http//www.sparknotes.com/physics/optics/phen
om/section3.rhtml
15Rayleigh Scattering Intensity as a function of
Scattering Angle.
Random E-field incident, random scatterer
orientation.
From http//www.jenkinsdisplays.com/led_bulbs/ray
leigh_scattering.html
16Dipole Radiation Pattern (Petty, Ch12).
Incident E-field vertical Dipole charge
oscillation vertical.
? incident direction
Irradiance Average for Random E-field sum of the
polarized patterns / 2.
Incident E-field Horizontal
17UV thoughts from http//uvb.nrel.colostate.edu/UVB
/publications/uvb_primer.pdf
18UV thoughts from http//uvb.nrel.colostate.edu/UVB
/publications/uvb_primer.pdf
19UV thoughts from http//uvb.nrel.colostate.edu/UVB
/publications/uvb_primer.pdf
20UV thoughts from http//uvb.nrel.colostate.edu/UVB
/publications/uvb_primer.pdf
Diffey action spectra Damage spectra for
sun-burn 305 nm, rule of thumb, worst UV
wavelength.