FR979647A - Photomètre à réflexion - Google Patents

Photomètre à réflexion

Info

Publication number
FR979647A
FR979647A FR979647DA FR979647A FR 979647 A FR979647 A FR 979647A FR 979647D A FR979647D A FR 979647DA FR 979647 A FR979647 A FR 979647A
Authority
FR
France
Prior art keywords
reflection photometer
photometer
reflection
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
English (en)
Inventor
Howard Windley Ellis
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 filed Critical
Application granted granted Critical
Publication of FR979647A publication Critical patent/FR979647A/fr
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
    • G01N21/55—Specular reflectivity

Landscapes

  • Physics & Mathematics (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)
  • Treatment Of Fiber Materials (AREA)
FR979647D 1948-01-26 1949-01-25 Photomètre à réflexion Expired FR979647A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB233948A GB640691A (en) 1948-01-26 1948-01-26 Improvements in or relating to reflection photometers

Publications (1)

Publication Number Publication Date
FR979647A true FR979647A (fr) 1951-04-30

Family

ID=9737804

Family Applications (1)

Application Number Title Priority Date Filing Date
FR979647D Expired FR979647A (fr) 1948-01-26 1949-01-25 Photomètre à réflexion

Country Status (2)

Country Link
FR (1) FR979647A (fr)
GB (1) GB640691A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2963938A (en) * 1956-03-26 1960-12-13 Ford Motor Co Surface meters for detecting irregularities on transparent elements
DE1789061A1 (de) * 1968-09-30 1971-12-23 Siemens Ag Laserdiode

Also Published As

Publication number Publication date
GB640691A (en) 1950-07-26

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