FR804407A - Photocolorimeter - Google Patents

Photocolorimeter

Info

Publication number
FR804407A
FR804407A FR804407DA FR804407A FR 804407 A FR804407 A FR 804407A FR 804407D A FR804407D A FR 804407DA FR 804407 A FR804407 A FR 804407A
Authority
FR
France
Prior art keywords
photocolorimeter
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
Other languages
French (fr)
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.)
PARIS SOC NOUV
Original Assignee
PARIS SOC NOUV
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 PARIS SOC NOUV filed Critical PARIS SOC NOUV
Application granted granted Critical
Publication of FR804407A publication Critical patent/FR804407A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
FR804407D 1935-07-13 1935-07-13 Photocolorimeter Expired FR804407A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR804407T 1935-07-13

Publications (1)

Publication Number Publication Date
FR804407A true FR804407A (en) 1936-10-23

Family

ID=9250715

Family Applications (1)

Application Number Title Priority Date Filing Date
FR804407D Expired FR804407A (en) 1935-07-13 1935-07-13 Photocolorimeter

Country Status (1)

Country Link
FR (1) FR804407A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2934172A (en) * 1955-03-09 1960-04-26 Proctor & Schwartz Inc Light transmissive color standard
US2960909A (en) * 1957-01-07 1960-11-22 Jr Robert M Shipley Method for determination of color of gems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2934172A (en) * 1955-03-09 1960-04-26 Proctor & Schwartz Inc Light transmissive color standard
US2960909A (en) * 1957-01-07 1960-11-22 Jr Robert M Shipley Method for determination of color of gems

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