FR519081A - Improvements to photometers, actinometers and similar devices - Google Patents

Improvements to photometers, actinometers and similar devices

Info

Publication number
FR519081A
FR519081A FR519081A FR519081DA FR519081A FR 519081 A FR519081 A FR 519081A FR 519081 A FR519081 A FR 519081A FR 519081D A FR519081D A FR 519081DA FR 519081 A FR519081 A FR 519081A
Authority
FR
France
Prior art keywords
actinometers
photometers
similar devices
similar
devices
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
FR519081A
Other languages
French (fr)
Inventor
Frederick James Hargreaves
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 FR519081A publication Critical patent/FR519081A/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
    • G01J1/02—Details
    • G01J1/08—Arrangements of light sources specially adapted for photometry standard sources, also using luminescent or radioactive material

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR519081A 1919-01-28 1920-07-06 Improvements to photometers, actinometers and similar devices Expired FR519081A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB519081X 1919-01-28

Publications (1)

Publication Number Publication Date
FR519081A true FR519081A (en) 1921-06-04

Family

ID=10461875

Family Applications (1)

Application Number Title Priority Date Filing Date
FR519081A Expired FR519081A (en) 1919-01-28 1920-07-06 Improvements to photometers, actinometers and similar devices

Country Status (1)

Country Link
FR (1) FR519081A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0434567A1 (en) * 1989-12-22 1991-06-26 Centre National D'etudes Spatiales Method for calibrating an optical instrument, and its applications

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0434567A1 (en) * 1989-12-22 1991-06-26 Centre National D'etudes Spatiales Method for calibrating an optical instrument, and its applications
FR2656420A1 (en) * 1989-12-22 1991-06-28 Centre Nat Etd Spatiales DEVICE FOR CALIBRATING OPTICAL INSTRUMENT AND APPLICATIONS THEREOF.

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