GB450576A - - Google Patents

Info

Publication number
GB450576A
GB450576A GB450576DA GB450576A GB 450576 A GB450576 A GB 450576A GB 450576D A GB450576D A GB 450576DA GB 450576 A GB450576 A GB 450576A
Authority
GB
United Kingdom
Prior art keywords
liquid
light
standard
transparent
absorption
Prior art date
Application number
Publication of GB450576A publication Critical patent/GB450576A/en

Links

Abstract

450,576. Photometric apparatus. BOLTON, E. R., and WILLIAMS, K. A., 6, Milner Street, Chelsea, London. April 26, 1935, No. 12586. [Class 97 (i)] In apparatus for measuring the colour of transparent or opaque substances by a photo-electrical measuring device, the infra red or other undesired rays transmitted by the filter are prevented from impinging on the light-sensitive element. For transparent liquids, light from a lamp 2 is condensed by a reflector 3 and lens 4 into a beam which passes through an adjustable stop 5 into a cell 6 fitted with transparent ends 6a and containing a liquid such as a solution of copper sulphate to absorb infra-red rays. The light then passes through a colour filter 7 into a tray 10 movable on rails 1i and containing two adjacent cells 9, in one of which is a standard liquid and in the other the liquid under examination, each liquid being brought alternately into the beam by sliding tray 10 on the rails. The light finally impinges on a photo-electric cell 11 connected to a galvanometer 12, the reading of which is taken for each liquid alternately, thus allowing the absorption of the examined liquid to be compared with that of the standard. The process is repeated with different colour filters 7 and the spectral absorption of the liquid determined. The scale of the galvanometer may be calibrated to read directly the percentage absorption of light by the liquid, the reading of the standard liquid being first brought to a predetermined value by means of stop 5. For opaque substances the amount of light reflected by the substance may be compared with that reflected by a standard surface such as one of magnesium oxide.
GB450576D GB450576A (en)

Publications (1)

Publication Number Publication Date
GB450576A true GB450576A (en)

Family

ID=1746620

Family Applications (1)

Application Number Title Priority Date Filing Date
GB450576D GB450576A (en)

Country Status (1)

Country Link
GB (1) GB450576A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2960909A (en) * 1957-01-07 1960-11-22 Jr Robert M Shipley Method for determination of color of gems
US3008370A (en) * 1958-07-21 1961-11-14 Antonjo M Uribe Photometric apparatus
US3695770A (en) * 1970-07-13 1972-10-03 Charles R Granger Method and apparatus for demonstrating photometric procedures
US3743429A (en) * 1970-05-18 1973-07-03 Kyoto Daiichi Kogaku Kk Colorimeter for measuring concentration and indicating the concentration as a digital quantity

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2960909A (en) * 1957-01-07 1960-11-22 Jr Robert M Shipley Method for determination of color of gems
US3008370A (en) * 1958-07-21 1961-11-14 Antonjo M Uribe Photometric apparatus
US3743429A (en) * 1970-05-18 1973-07-03 Kyoto Daiichi Kogaku Kk Colorimeter for measuring concentration and indicating the concentration as a digital quantity
US3695770A (en) * 1970-07-13 1972-10-03 Charles R Granger Method and apparatus for demonstrating photometric procedures

Similar Documents

Publication Publication Date Title
Sullivan Experimental study of the absorption in distilled water, artificial sea water, and heavy water in the visible region of the spectrum
US3627431A (en) Densitometer
Scott et al. The application of ultraviolet microscopy to the distribution of lignin in wood description and validity of the technique
Schachman et al. Ultracentrifuge studies with absorption optics: II. Incorporation of a monochromator and its application to the study of proteins and interacting systems
Kullenberg Scattering of light by Sargasso Sea water
US3392623A (en) Absorptiometric apparatus
Clarke et al. Laboratory analysis of the selective absorption of light by sea water
Brice et al. Photoelectric light-scattering photometer for determining high molecular weights
EP0206433B1 (en) Methods for measuring the light absorbance of a fluid medium
US3975084A (en) Particle detecting system
US4427889A (en) Method and apparatus for molecular spectroscopy, particularly for the determination of products of metabolism
Rodney et al. Index of refraction of fused quartz glass for ultraviolet, visible, and infrared wavelengths
US3713743A (en) Forward scatter optical turbidimeter apparatus
Cary et al. A quartz photoelectric spectrophotometer
US4264205A (en) Rapid scan spectral analysis system utilizing higher order spectral reflections of holographic diffraction gratings
EP0641432B1 (en) Method and apparatus for examining an object
US3704951A (en) S light cell for increasing the intensity level of raman light emission from a sample
Stein et al. The scattering of light from thin polymer films. I. Experimental procedure
US3850525A (en) Simultaneous multiple measurements in laser photometers
Tyler et al. Submersible spectroradiometer
US3297873A (en) Microscope system with means for viewing the entire image and means for measuring radiation from a selected segment of image
US3885879A (en) Dual beam spectrophotometer utilizing a spectral wedge and bifurcated fiber optic bundle
US3089382A (en) Method and apparatus for analyzing fluids
US1999023A (en) Photoelectric comparator
US4516856A (en) Optical apparatus for fluorescence polarization instrument