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d²Φ - L - Intensity
- Φ - power in watts
- Ω - solid angle in steradians
- θ - angle between source and normal of the source
This is the common way the term Intensity is used in Astronomy. In physics, the term is often used all electromagnetic radiation striking a surface in watts per square meter. Thus the term "Radiance" to distinguish meanings.
The measure,EMR,physics)Referenced by:
Balmer Jump Color Index Continuous Absorption Convolution Eddington Approximation Filter Fundamental Plane Globular Cluster (GC) Grating Imaging Fourier Transform Spectroscopy (IFTS) Imaging Spectrometer Irradiance Kramers Opacity Law Light Cone Light Curve Line Blanketing Line Shape Function Opacity Optical Depth (τ) Planck Function Radiance Radiative Flux Reddening Rosseland Mean Opacity Equation of Radiative Transfer (RTE) Schuster-Schwarzschild Model SIMSTACK Source Function (S) Spectral Power Distribution (SPD) Spectrometer Spectrometry Stellar Temperature Determination Two-stream Approximation Visible Light Wien's Displacement Law |