CH279951A - Photoelectric colorimeter. - Google Patents

Photoelectric colorimeter.

Info

Publication number
CH279951A
CH279951A CH279951DA CH279951A CH 279951 A CH279951 A CH 279951A CH 279951D A CH279951D A CH 279951DA CH 279951 A CH279951 A CH 279951A
Authority
CH
Switzerland
Prior art keywords
photoelectric colorimeter
colorimeter
photoelectric
Prior art date
Application number
Other languages
French (fr)
Inventor
Ro Auguste-Louis-Marie-Antoine
Original Assignee
Rouy Auguste Louis Marie Antoi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rouy Auguste Louis Marie Antoi filed Critical Rouy Auguste Louis Marie Antoi
Publication of CH279951A publication Critical patent/CH279951A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C5/00—Pavings made of prefabricated single units
    • E01C5/005—Individual couplings or spacer elements for joining the prefabricated units
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/251—Colorimeters; Construction thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/501—Colorimeters using spectrally-selective light sources, e.g. LEDs
CH279951D 1946-05-10 1948-12-28 Photoelectric colorimeter. CH279951A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US668925A US2448134A (en) 1946-05-10 1946-05-10 Pavement slab connector
GB33601/48A GB666886A (en) 1946-05-10 1948-12-31 Improvements in photo electric colorimeters

Publications (1)

Publication Number Publication Date
CH279951A true CH279951A (en) 1951-12-31

Family

ID=41090239

Family Applications (1)

Application Number Title Priority Date Filing Date
CH279951D CH279951A (en) 1946-05-10 1948-12-28 Photoelectric colorimeter.

Country Status (4)

Country Link
US (1) US2448134A (en)
CH (1) CH279951A (en)
DE (1) DE826644C (en)
GB (1) GB666886A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915582A (en) * 1970-01-09 1975-10-28 Klarcrete Ltd Method of repairing concrete roads
US4353666A (en) * 1980-12-08 1982-10-12 Brandley Reinard W Device for transferring loads between adjoining concrete slabs
US4516876A (en) * 1983-01-10 1985-05-14 Wicks Harry O Precast concrete expansion joint for roads and the like
US20050265802A1 (en) * 2004-05-27 2005-12-01 Alltrista Zinc Products, L.P. Environmentally protected reinforcement dowel pins and method of making
US20150098757A1 (en) * 2013-10-07 2015-04-09 Mark Mitchell Playground mats
US9920490B2 (en) * 2016-01-05 2018-03-20 Integrated Roadways, Llc Modular pavement system
US10407838B1 (en) 2017-02-06 2019-09-10 Integrated Roadways, Llc Modular pavement slab
US11230815B2 (en) * 2019-01-08 2022-01-25 Sael, Llc. Dowel basket with non-metallic dowel bars and method of making same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US52162A (en) * 1866-01-23 Improved coupling for shafting
US112972A (en) * 1871-03-21 Improvement in shaft-couplings
US1377418A (en) * 1918-01-21 1921-05-10 Carl A Krogh Rod-coupling
US1811161A (en) * 1929-09-16 1931-06-23 Structural Concrete Units Corp Unit wall construction
US2014826A (en) * 1930-10-02 1935-09-17 Hyland R Johns Road building apparatus
US2181005A (en) * 1935-05-20 1939-11-21 Cal C Chambers Dowel bar structure
US2327231A (en) * 1935-05-20 1943-08-17 James H Jacobson Split dowel bar with bearing and support
US2187912A (en) * 1936-04-13 1940-01-23 Ralph S Peirce Road anchoring means

Also Published As

Publication number Publication date
DE826644C (en) 1951-11-29
GB666886A (en) 1952-02-20
US2448134A (en) 1948-08-31

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