TY - JOUR T1 - 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. JF - Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London (1800-1843) VL - 1 SP - 20 EP - 21 PY - 1800/01/01/ UR - http://dx.doi.org/10.1098/rspl.1800.0012 M3 - doi:10.1098/rspl.1800.0012 AU - Herschel, W. ER -