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Stem Icon Library
Free, downloadable PNG icons across biology, anatomy, chemistry, physics, and engineering. Browse 4,976 icons or search by topic.
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6,370
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Astrophysics
Optical depth tau v
Optical depth tau v
Astrophysics
Source function s lambda
Source function s lambda
Astrophysics
Intensity i lambda
Intensity i lambda
Astrophysics
Intensity i
Intensity i
Astrophysics
Source function s
Source function s
Astrophysics
Kappa lambda subscript
Kappa lambda subscript
Astrophysics
Opacity kappa
Opacity kappa
Astrophysics
Density rho
Density rho
Astrophysics
Onion cross section
Onion cross section
Astrophysics
Stellar atmosphere plane parallel
Stellar atmosphere plane parallel
Astrophysics
Eddington approximation intensity diagram
Eddington approximation intensity diagram
Astrophysics
Outward intensity arrow
Outward intensity arrow
Astrophysics
Inward intensity arrow
Inward intensity arrow
Astrophysics
Blackbody radiation glow
Blackbody radiation glow
Astrophysics
Scientist portrait
Scientist portrait
Astrophysics
Star disk
Star disk
Astrophysics
Emergent intensity beam
Emergent intensity beam
Astrophysics
Initial intensity beam
Initial intensity beam
Astrophysics
Source function profile
Source function profile
Astrophysics
Optical depth scale
Optical depth scale
Astrophysics
Vertical axis arrow
Vertical axis arrow
Astrophysics
Plane parallel stellar atmosphere
Plane parallel stellar atmosphere
Astrophysics
Light ray oblique
Light ray oblique
Astrophysics
Ray path optical depth element
Ray path optical depth element
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