EKHI
The open database of optical and radiative data
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Publications: 167 Total entries: 1251
The Thermal Emissivity of Some Materials Used in Thermionic Valve Manufacture
C. M. Cade
The laws governing thermal radiation are briefly-reviewed and methods of measuring emissivity are described. The apparatus used by the author is described and an account of possible sources of error is given. Results of other workers are quoted wherever available, …
6 entries
TITANIUM DIOXIDE CONTACT COATINGS: Hemispherical total emittance
TITANIUM HYDRIDE PIGMENTED COATINGS: Hemispherical total emittance
ZIRCONIUM CARBIDE PIGMENTED COATINGS: Hemispherical total emittance
A 5-m Integrating Sphere
Mamoru Nonaka, Takeo Kashima, Yataro Kondo
An integrating sphere with an inner diameter of 5 m was constructed with special attention in order to make a true sphere by welding together steel plates of thickness of 12 mm. The deviations of radii from a true sphere …
3 entries
BARIUM SULFATE BaSO₄: Normal spectral reflectance
Optical Sphere Paint and a Working Standard of Reflectance
F. Grum, G. W. Luckey
Specially prepared barium sulfate powders and coatings of these powders with polyvinyl alcohol have been used as working standards of reflectance and for coating integrating spheres. These materials are satisfactory for use in the wavelength range 0.20–2.00 µ. Since the …
9 entries
BARIUM SULFATE BaSO₄: Normal spectral reflectance
Optical Reflectors for Use in Internal Sample Aqueous Čerenkov Counters
Ove M. Strindehag
Properties such as reflectance, deterioration in water, and deposition of activities are investigated for several types of optical reflectors. Reflectance values for both visible and ultraviolet light are included and the deterioration tests extend up to water temperatures of 150°C. …
11 entries
NUCLEAR ENTERPRISE LTD. PAINTS: Normal spectral reflectance
PLATINUM CONTACT COATINGS: Angular spectral reflectance
ALUMINUM + MAGNESIUM CONVERSION COATINGS: Angular spectral reflectance, Normal spectral reflectance
Development of a stable “white” coating system
R. Tanzilli
No abstract provided
173 entries
CALCIUM CARBONATE CaCO₃: Normal spectral reflectance
MISCELLANEOUS CARBONATES: Normal spectral reflectance
DIATOMACEOUS EARTH PIGMENTED COATINGS: Normal spectral reflectance
ZIRCONIUM SILICATE ZrSiO₄: Normal spectral reflectance
MISCELLANEOUS SILICATES: Normal spectral reflectance
ZINC OXIDE PIGMENTED COATINGS: Normal solar absorptance
ZINC SULFIDE PIGMENTED COATINGS: Normal spectral reflectance
ZIRCONIUM OXIDE PIGMENTED COATINGS: Normal spectral reflectance, Normal solar absorptance
ZIRCONIUM SILICATE PIGMENTED COATINGS: Normal spectral reflectance
CALCIUM FLUORIDE CaF₂: Angular spectral reflectance
BORON NITRIDE BN: Normal spectral reflectance
ZINC SULFIDE ZnS: Normal spectral reflectance
TEFLON CONTACT COATINGS: Normal spectral reflectance
ALUMINUM CONVERSION COATINGS: Normal spectral reflectance
VYCOR GLASSES: Normal spectral reflectance
CARBONATE MINERALS: Normal spectral reflectance
MISCELLANEOUS PHOSPHATES: Normal spectral reflectance
Paints to Reflect Ultraviolet Light
Donald F. Wilcock, Walter Soller
The development of paints reflecting up to 70 per cent in the ultraviolet is described. The stages of development are (a) testing of reflection or transmission of possible paint materials, (b) testing of the simplest possible combinations of pigment and …
20 entries
MAGNESIUM OXIDE PIGMENTED COATINGS: Normal integrated reflectance
MAGNESIUM CARBONATE MgCO₃: Normal spectral reflectance
LEAD TITANATE PbTiO₃: Normal integrated reflectance
The measurements of absorptivity and reflectivity
E. T. DE LA Perrelle, T. S. Moss, H. Herbert
To deduce the absorptivity from a measurement of reflectivity it is necessary to measure the reflectivity in such a manner that both diffuse and specular reflection are correctly included. A method of doing this is described which makes use of …
4 entries
ZINC SULFIDE ZnS: Normal spectral reflectance
LEAD CARBONATE PbCO₃: Normal spectral reflectance
Far infrared transmission of silicon and germanium [11]
R. C. Lord
No abstract provided
1 entries
Measurement of the Infrared Spectral Absorptance of Optical Materials
D. L. Stierwalt, J. B. Bernstein, D. D. Kirk
The spectral absorptances of some solids have been measured in the 2- to 25-&mu and region in the temperature range 313 to 473 K by use of a modified Beckman IR-3 spectrophotometer. The emission of each sample is compared directly …
9 entries
ZINC SULFIDE ZnS: Normal spectral absorptance
ZINC SELENIDE ZnSe: Normal spectral absorptance
MAGNESIUM FLUORIDE MgF₂: Normal spectral absorptance
Spectral and directional thermal radiation characteristics of selective sufaces for solar collectors
D. K. Edwards, J. T. Gier, K. E. Nelson, R. D. Roddick
Surface systems suitable for collectors of solar heat energy are examined. Spectral radiation characteristics of metallic substrates coated with semiconductor and antireflection layers are considered. Directional spectral reflectances of several surface coatings are presented and evaluated. Commercial chemical dip treatments …
1 entries