DE180151C - - Google Patents

Info

Publication number
DE180151C
DE180151C DE1903180151D DE180151DD DE180151C DE 180151 C DE180151 C DE 180151C DE 1903180151 D DE1903180151 D DE 1903180151D DE 180151D D DE180151D D DE 180151DD DE 180151 C DE180151 C DE 180151C
Authority
DE
Germany
Prior art keywords
light
rotation
axis
light sources
revolution
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
DE1903180151D
Other languages
German (de)
English (en)
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 filed Critical
Application granted granted Critical
Publication of DE180151C publication Critical patent/DE180151C/de
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)
  • Illuminated Signs And Luminous Advertising (AREA)
DE1903180151D 1903-11-03 1903-11-25 Expired DE180151C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR180151X 1903-11-03

Publications (1)

Publication Number Publication Date
DE180151C true DE180151C (enrdf_load_stackoverflow) 1907-01-11

Family

ID=34630700

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1903180151D Expired DE180151C (enrdf_load_stackoverflow) 1903-11-03 1903-11-25

Country Status (1)

Country Link
DE (1) DE180151C (enrdf_load_stackoverflow)

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