Investigation of the Powers of the Prismatic Colours to Heat and Illuminate Objects; With Remarks, That Prove the Different Refrangibility of Radiant Heat. To Which is Added, an Inquiry into the Method of Viewing the Sun Advantageously, with Telescopes of Large Apertures and High Magnifying Powers. By William Herschel, LL. D. F. R. S

W. Herschel
1800 Philosophical Transactions of the Royal Society of London  
doi:10.1098/rstl.1800.0014 fatcat:udcigg23tzeongwgsvlkaey65a