FR337085A - Perfectionnement aux appareils photométriques - Google Patents

Perfectionnement aux appareils photométriques

Info

Publication number
FR337085A
FR337085A FR337085DA FR337085A FR 337085 A FR337085 A FR 337085A FR 337085D A FR337085D A FR 337085DA FR 337085 A FR337085 A FR 337085A
Authority
FR
France
Prior art keywords
further training
photometric devices
photometric
devices
training
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
John Frederick Simmance
Jacques Abady
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 FR337085A publication Critical patent/FR337085A/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
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
    • G01J1/34—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using separate light paths used alternately or sequentially, e.g. flicker

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR337085D 1903-11-03 1903-11-03 Perfectionnement aux appareils photométriques Expired FR337085A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR337085T 1903-11-03

Publications (1)

Publication Number Publication Date
FR337085A true FR337085A (fr) 1904-03-28

Family

ID=1386459

Family Applications (1)

Application Number Title Priority Date Filing Date
FR337085D Expired FR337085A (fr) 1903-11-03 1903-11-03 Perfectionnement aux appareils photométriques

Country Status (1)

Country Link
FR (1) FR337085A (fr)

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