DE272246C - - Google Patents

Info

Publication number
DE272246C
DE272246C DE1913272246D DE272246DD DE272246C DE 272246 C DE272246 C DE 272246C DE 1913272246 D DE1913272246 D DE 1913272246D DE 272246D D DE272246D D DE 272246DD DE 272246 C DE272246 C DE 272246C
Authority
DE
Germany
Prior art keywords
light
hollow sphere
opening
sphere
stationary
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
DE1913272246D
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 DE272246C publication Critical patent/DE272246C/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
    • G01J1/22—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 a variable element in the light-path, e.g. filter, polarising means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
DE1913272246D 1913-05-14 1913-05-14 Expired DE272246C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE272246T 1913-05-14

Publications (1)

Publication Number Publication Date
DE272246C true DE272246C (enrdf_load_stackoverflow) 1914-03-27

Family

ID=34624968

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1913272246D Expired DE272246C (enrdf_load_stackoverflow) 1913-05-14 1913-05-14

Country Status (1)

Country Link
DE (1) DE272246C (enrdf_load_stackoverflow)

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