FR976181A - Electric photometer - Google Patents

Electric photometer

Info

Publication number
FR976181A
FR976181A FR976181DA FR976181A FR 976181 A FR976181 A FR 976181A FR 976181D A FR976181D A FR 976181DA FR 976181 A FR976181 A FR 976181A
Authority
FR
France
Prior art keywords
photometer
electric
electric 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
French (fr)
Inventor
Claude-Antoine Large
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 FR976181A publication Critical patent/FR976181A/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
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/12—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using wholly visual means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR976181D 1948-10-01 1948-10-01 Electric photometer Expired FR976181A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR976181T 1948-10-01

Publications (1)

Publication Number Publication Date
FR976181A true FR976181A (en) 1951-03-14

Family

ID=9518636

Family Applications (1)

Application Number Title Priority Date Filing Date
FR976181D Expired FR976181A (en) 1948-10-01 1948-10-01 Electric photometer

Country Status (1)

Country Link
FR (1) FR976181A (en)

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