FR384392A - Photomètre à lecture directe - Google Patents

Photomètre à lecture directe

Info

Publication number
FR384392A
FR384392A FR384392DA FR384392A FR 384392 A FR384392 A FR 384392A FR 384392D A FR384392D A FR 384392DA FR 384392 A FR384392 A FR 384392A
Authority
FR
France
Prior art keywords
direct reading
photometer
reading photometer
direct
reading
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
Charles Fery
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 FR384392A publication Critical patent/FR384392A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR384392D 1907-11-26 1907-11-26 Photomètre à lecture directe Expired FR384392A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR384392T 1907-11-26

Publications (1)

Publication Number Publication Date
FR384392A true FR384392A (fr) 1908-04-07

Family

ID=1430339

Family Applications (1)

Application Number Title Priority Date Filing Date
FR384392D Expired FR384392A (fr) 1907-11-26 1907-11-26 Photomètre à lecture directe

Country Status (1)

Country Link
FR (1) FR384392A (fr)

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