The Hertzsprung-Russell Diagram Astrophysics Astrophysics Basics The Hertzsprung-Russell Diagram Questions On a Hertzsprung-Russell diagram, where would we find stars that have the largest radii? What is the H-R diagram? Astrophysics Basics View all chapters The Electromagnetic Spectrum Blackbody Radiation Luminosity, Effective Temperature, Flux and Magnitudes Blotzmann and Saha Equations Spectral Classification of Stars The Hertzsprung-Russell Diagram Prev