TY - JOUR T1 - Observations Tending to Investigate the Nature of the Sun, in Order to Find the Causes or Symptoms of Its Variable Emission of Light and Heat; with Remarks on the Use That May Possibly Be drawn from Solar Observations. JF - Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London (1800-1843) VL - 1 SP - 49 EP - 52 PY - 1800/01/01/ UR - http://dx.doi.org/10.1098/rspl.1800.0032 M3 - doi:10.1098/rspl.1800.0032 AU - Herschel, W. ER -