TY - JOUR T1 - On the Visibility of Certain Rays beyond the Ordinary Red Rays of the Solar Spectrum. JF - Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London (1800-1843) VL - 4 SP - 146 EP - 146 PY - 1837/01/01/ UR - http://dx.doi.org/10.1098/rspl.1837.0069 M3 - doi:10.1098/rspl.1837.0069 AU - Cooper, J. ER -