Parameters: Low wavelength:  µm High wavelength:  µm     Plot 1:   Temperature:  K Emissivity:  (optional) Percent Area:  % Plot 2:   Temperature:  K Emissivity:  (optional) Percent Area:  % Plot 3:   Temperature:  K (optional) Emissivity:  (optional) Percent Area:  % (optional)     Plot Parameters (optional):   x-axis (wavelength) increment: x-axis (wavelength) range: to y-axis (radiance) range: to    OR   Auto-scale y-axis:     x-axis Scale: Log Linear y-axis Scale: Log Linear

Results:   Radiance   Spec. Rad. (W*m-2* µm-1*sr-1)     Wavelength (µm)

Constants (from NIST): Constant Value Units Speed of Light (c) 2.99792548e+8 m*s-1 Planck constant (h) 6.626068963e-34 J*s Boltzmann constant (k) 1.3806504e-23 J*K-1 Wien constant (b) 2.8977685e-3 m*K Stefan-Boltzmann constant (σ) 5.670400e-8 W*m-2*K-4 First Radiation constant for spectral radiance (c1) (2hc2) 1.191042759e-16 W*m2*sr-1 Second Radiation constant (c2) (hc/k) 1.4387752e-2 m*K

This tool was developed as part of the Education & Public Outreach program of the NASA ROSES 2009 New Investigator Program in Earth Science (NNH09ZDA001N-NIP). It is a work in progress. Please send any questions, comments, or suggestions to the PI: R. Greg Vaughan (gvaughan@usgs.gov).

---

U.S. Department of the Interior | U.S. Geological Survey Home | Search | Disclaimers & Privacy Send comments to gvaughan@usgs.gov