GB296198A - An improved method of measuring and determining the intensity of radiation especially of sources of ultra-violet light - Google Patents

An improved method of measuring and determining the intensity of radiation especially of sources of ultra-violet light

Info

Publication number
GB296198A
GB296198A GB2363127A GB2363127A GB296198A GB 296198 A GB296198 A GB 296198A GB 2363127 A GB2363127 A GB 2363127A GB 2363127 A GB2363127 A GB 2363127A GB 296198 A GB296198 A GB 296198A
Authority
GB
United Kingdom
Prior art keywords
phototropic
irradiation
intensity
measuring
determining
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB2363127A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB2363127A priority Critical patent/GB296198A/en
Publication of GB296198A publication Critical patent/GB296198A/en
Expired legal-status Critical Current

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
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/48—Photometry, e.g. photographic exposure meter using chemical effects
    • G01J1/50—Photometry, e.g. photographic exposure meter using chemical effects using change in colour of an indicator, e.g. actinometer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

296,198. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Sept. 8, 1927. Comparison photometers. - A process of measuring the intensity of radiation sources of ultraviolet rays consists in exposing to irradiation a solution of a phototropic colouring matter, sensible in the region under examination, to which a small amount of substance counteracting the photochemical colour change has been added and determining the degree of change of colour by comparison with a scale of standard solutions of the colouring matter formed by irradiation in a non-phototropic form. Examples are given utilizing leucocyanides, carbinols or sulphurous compounds of basic colouring matters as phototropic colouring matters. The substance used to counteract the photochemical colour change is one furnishing an ion equal to that formed by irradiation of the phototropic colouring matter.
GB2363127A 1927-09-08 1927-09-08 An improved method of measuring and determining the intensity of radiation especially of sources of ultra-violet light Expired GB296198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2363127A GB296198A (en) 1927-09-08 1927-09-08 An improved method of measuring and determining the intensity of radiation especially of sources of ultra-violet light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2363127A GB296198A (en) 1927-09-08 1927-09-08 An improved method of measuring and determining the intensity of radiation especially of sources of ultra-violet light

Publications (1)

Publication Number Publication Date
GB296198A true GB296198A (en) 1928-08-30

Family

ID=10198770

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2363127A Expired GB296198A (en) 1927-09-08 1927-09-08 An improved method of measuring and determining the intensity of radiation especially of sources of ultra-violet light

Country Status (1)

Country Link
GB (1) GB296198A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0290750A2 (en) * 1987-03-19 1988-11-17 Xytronyx, Inc. Systems for the visualization of exposure to ultraviolet radiation and for the utilization of ultraviolet radiation to effect color changes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0290750A2 (en) * 1987-03-19 1988-11-17 Xytronyx, Inc. Systems for the visualization of exposure to ultraviolet radiation and for the utilization of ultraviolet radiation to effect color changes
EP0290750A3 (en) * 1987-03-19 1991-02-27 Xytronyx, Inc. Systems for the visualization of exposure to ultraviolet radiation and for the utilization of ultraviolet radiation to effect color changes

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