Abstract

It has long been known that molecules can be dissociated by light to produce free radical type fragments, which can cause a series of secondary reactions. Significant progress has recently been achieved by Melville and Norrish in applying high radiation intensities and short time electronic recording devices. It was possible to produce free radicals in sufficient concentrations to photograph their absorption spectrums and to determine their average lifetime in the presence of various substances with which they react.

© 1953 Optical Society of America

Classification and Assignments of Ultraviolet Spectra of Conjugated Organic Molecules

John R. Platt
J. Opt. Soc. Am. 43(4) 252-257 (1953)

Structure of the Associated OH Valence Vibration Band in Light and Heavy Acetic, Trichloroacetic, and Trifluoroacetic Acids*

Nelson Fuson and Marie–Louise Josien
J. Opt. Soc. Am. 43(11) 1102-1105 (1953)

Metacontrast

Mathew Alpern
J. Opt. Soc. Am. 43(8) 648-657 (1953)

Stray Light and the Human Electroretinogram*

Robert M. Boynton
J. Opt. Soc. Am. 43(6) 442-449 (1953)

Looking into the Nucleus*

Francis Bitter
J. Opt. Soc. Am. 43(4) 233-236 (1953)