Results 201 to 210 of about 41,520 (248)
Some of the next articles are maybe not open access.
Spectrochimica Acta, 1950
A discussion of the performance characteristics of an infra-red microspectrometer is given in terms of the cross-sectional area and minimum volume, V, which can be observed with satisfactory signal-to-noise ratio. Methods of increasing the ratio of measured absorption to spectrometer noise are discussed and five ways are enumerated.
Blout, E. R., Bird, G. R., Grey, D. S.
openaire +1 more source
A discussion of the performance characteristics of an infra-red microspectrometer is given in terms of the cross-sectional area and minimum volume, V, which can be observed with satisfactory signal-to-noise ratio. Methods of increasing the ratio of measured absorption to spectrometer noise are discussed and five ways are enumerated.
Blout, E. R., Bird, G. R., Grey, D. S.
openaire +1 more source
Journal of the Optical Society of America, 1948
A pupillometer for measuring pupil diameters in total visual darkness has been constructed. It consists of an infra-red electron telescope arranged to observe the eye from a distance of about six inches. An attached light source irradiates the eye with invisible infra-red radiation.
M, KOOMEN, R, TOUSEY, H A, KNOLL
openaire +2 more sources
A pupillometer for measuring pupil diameters in total visual darkness has been constructed. It consists of an infra-red electron telescope arranged to observe the eye from a distance of about six inches. An attached light source irradiates the eye with invisible infra-red radiation.
M, KOOMEN, R, TOUSEY, H A, KNOLL
openaire +2 more sources
Polarization of Infra-Red Radiation
Nature, 1947A METHOD of making thin selenium films with free surfaces has been devised, and this has enabled us to construct a pile of selenium films which polarize a beam of radiation falling on the plates at the appropriate angle. The transmitted beam is the one which is used, and a high degree of polarization (with very little loss of efficiency) is obtained ...
A, ELLIOTT, E J, AMBROSE
openaire +2 more sources
AN INFRA-RED SKIASCOPE AND OTHER INFRA-RED OPHTHALMIC RESEARCH INSTRUMENTS
Optometry and Vision Science, 1953openaire +2 more sources
Conformational structure of bisphenol A polycarbonate studied by infra-red spectroscopy
Polymer, 1991Jiří Dybal, E Turska
exaly
Standardizing Infra-red Measures of Bone Mineral Crystallinity: an Experimental Approach
Journal of Archaeological Science, 2001Todd Surovell
exaly