FR331938A - Photomètre photographique - Google Patents

Photomètre photographique

Info

Publication number
FR331938A
FR331938A FR331938DA FR331938A FR 331938 A FR331938 A FR 331938A FR 331938D A FR331938D A FR 331938DA FR 331938 A FR331938 A FR 331938A
Authority
FR
France
Prior art keywords
photometer
photographic
photographic photometer
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
Edouard Degen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR331938A publication Critical patent/FR331938A/fr
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
    • G01J1/38—Photometry, e.g. photographic exposure meter using wholly visual means
    • G01J1/40—Photometry, e.g. photographic exposure meter using wholly visual means using limit or visibility or extinction effect

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR331938D 1903-05-12 1903-05-12 Photomètre photographique Expired FR331938A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR331938T 1903-05-12

Publications (1)

Publication Number Publication Date
FR331938A true FR331938A (fr) 1903-10-08

Family

ID=1381619

Family Applications (1)

Application Number Title Priority Date Filing Date
FR331938D Expired FR331938A (fr) 1903-05-12 1903-05-12 Photomètre photographique

Country Status (1)

Country Link
FR (1) FR331938A (fr)

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