FR1382011A - Signaling device for fog warning control - Google Patents

Signaling device for fog warning control

Info

Publication number
FR1382011A
FR1382011A FR963304A FR963304A FR1382011A FR 1382011 A FR1382011 A FR 1382011A FR 963304 A FR963304 A FR 963304A FR 963304 A FR963304 A FR 963304A FR 1382011 A FR1382011 A FR 1382011A
Authority
FR
France
Prior art keywords
signaling device
warning control
fog warning
fog
control
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
FR963304A
Other languages
French (fr)
Inventor
Hans Lennart Hallengren
Nils Boris Ragnar Lindblom
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
Priority to FR963304A priority Critical patent/FR1382011A/en
Application granted granted Critical
Publication of FR1382011A publication Critical patent/FR1382011A/en
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
    • G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G01N21/538—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke for determining atmospheric attenuation and visibility

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR963304A 1964-02-11 1964-02-11 Signaling device for fog warning control Expired FR1382011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR963304A FR1382011A (en) 1964-02-11 1964-02-11 Signaling device for fog warning control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR963304A FR1382011A (en) 1964-02-11 1964-02-11 Signaling device for fog warning control

Publications (1)

Publication Number Publication Date
FR1382011A true FR1382011A (en) 1964-12-14

Family

ID=8822855

Family Applications (1)

Application Number Title Priority Date Filing Date
FR963304A Expired FR1382011A (en) 1964-02-11 1964-02-11 Signaling device for fog warning control

Country Status (1)

Country Link
FR (1) FR1382011A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2626076A1 (en) * 1988-01-19 1989-07-21 France Etat Device intended for detecting variations in transparency of an atmosphere to be monitored

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2626076A1 (en) * 1988-01-19 1989-07-21 France Etat Device intended for detecting variations in transparency of an atmosphere to be monitored

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