Historical Figures
Formulated the laws of blackbody radiation
Who is Max Planck
Unit of power
What is the lumen
Relationship between radiance and exitance for Lambertian Surface
What is L = M / pi
Noise expressed as radiometric flux
What is the
Noise Equivalent Power or NEP
Radiating equally in all directions
What is isotropic
Characterized the peak shift in spectral energy from a heated solid
Who is Wilhelm Wien
Curve that defines limits of human vision during the daytime
What is the V-lambda curve
Formula for calculating spectral irradiance
What is
Elambda = Philambda / Area
Noise expressed as power per area per solid angle
What is the Noise Equivalent Radiance or NER
Power leaving a surface into the hemisphere
What is exitance
This person theoretically derived a law that computes total exitance from a blackbody
Who is Ludwig Boltzmann, (derived in 1844), student of Josef Stefan
Relates the luminous power to the radiant power of a source
What is the luminous efficacy of radiation
Lamberts Cosine Law
What is
Itheta = I0 cos(theta)
Variation in signal due to random nature of photons
What is photon shot noise
Something that can absorb and re-radiate all energy
What is a blackbody
Demonstrated that light consists of waves through interference
Who is Thomas Young in 1801
Scales radiometric flux levels to be consistent with historical scales of perceived brightness
What is the luminous efficacy scalar
Inverse square law, in terms of photometric intensity
What is
Ev = Iv / r^2
Noise express as a power per area
What is the Noise Equivalent Irradiance or NEI
Number of waves that would fit in 1 cm length
What is wavenumber
Derived the invariance of radiance
Who is Fred Nicodemus, 1963, NBS, then NIST
HVS responses to this photometric quantity
What is luminance
The fundamental definition of flux
What is
Phi = n hc / t lambda
Expressing noise related to changes in reflectance
What is the Noise Equivalent Change in Reflectance or NE delta rho
How 'not' like a blackbody something is
What is emissivity