ABSTRACT
We describe the use of an argon laser in human tympanoplasty. The laser was used in two different ways: (1) to stop the bleeding of small vessels in the external auditory channel and eardrum remains; and (2) to spot-weld the new eardrum graft in the proper position. Seven operations were performed. We report the results.
Subject(s)
Laser Therapy , Tympanoplasty/methods , Animals , Electrosurgery , Guinea Pigs , Humans , Tympanoplasty/instrumentationABSTRACT
A three-mirror, multiple beam interferometer is described and analyzed in use as a rejection filter for elastically scattered light in a Raman scattering experiment. A prototype filter capable of attenuating laser source frequency light by a factor of 450 and passing 88% of Raman scattered signal is reported.
ABSTRACT
Several polywater samples were prepared by the standard methods and have the same physical and spectroscopic properties as those made in other laboratories. However, a variety of chemical analyses show high concentrations of impurities which may account for many of the anomalous properties.
ABSTRACT
The visual observation of optical rotation in quartz with subsequent Rayleigh scattering from crystal imperfections is reported. Observations in which the incident beam travels at an arbitrary angle with the optic axis are described and are shown to obey classical Fresnel relations. The frequency dependence of the phenomenon has also been studied.
