FR486640A - Lunette photométrique - Google Patents

Lunette photométrique

Info

Publication number
FR486640A
FR486640A FR486640DA FR486640A FR 486640 A FR486640 A FR 486640A FR 486640D A FR486640D A FR 486640DA FR 486640 A FR486640 A FR 486640A
Authority
FR
France
Prior art keywords
photometric
telescope
photometric telescope
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
Lucien-Gustave Jannin
Maurice-Jules Poyet
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.)
LUCIEN GUSTAVE JANNIN
Original Assignee
LUCIEN GUSTAVE JANNIN
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 LUCIEN GUSTAVE JANNIN filed Critical LUCIEN GUSTAVE JANNIN
Application granted granted Critical
Publication of FR486640A publication Critical patent/FR486640A/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)
FR486640D 1917-08-31 1917-08-31 Lunette photométrique Expired FR486640A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR486640T 1917-08-31

Publications (1)

Publication Number Publication Date
FR486640A true FR486640A (fr) 1918-04-23

Family

ID=1523232

Family Applications (1)

Application Number Title Priority Date Filing Date
FR486640D Expired FR486640A (fr) 1917-08-31 1917-08-31 Lunette photométrique

Country Status (1)

Country Link
FR (1) FR486640A (fr)

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