FR688885A - Device for measuring wavelengths - Google Patents

Device for measuring wavelengths

Info

Publication number
FR688885A
FR688885A FR688885DA FR688885A FR 688885 A FR688885 A FR 688885A FR 688885D A FR688885D A FR 688885DA FR 688885 A FR688885 A FR 688885A
Authority
FR
France
Prior art keywords
measuring wavelengths
wavelengths
measuring
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)
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.)
PREC ELECTR ANCIENS ETABLISSEM
Original Assignee
PREC ELECTR ANCIENS ETABLISSEM
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 PREC ELECTR ANCIENS ETABLISSEM filed Critical PREC ELECTR ANCIENS ETABLISSEM
Application granted granted Critical
Publication of FR688885A publication Critical patent/FR688885A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR688885D 1929-04-13 1929-04-13 Device for measuring wavelengths Expired FR688885A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR688885T 1929-04-13

Publications (1)

Publication Number Publication Date
FR688885A true FR688885A (en) 1930-08-29

Family

ID=9026978

Family Applications (1)

Application Number Title Priority Date Filing Date
FR688885D Expired FR688885A (en) 1929-04-13 1929-04-13 Device for measuring wavelengths

Country Status (1)

Country Link
FR (1) FR688885A (en)

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