FR2264279B2 - - Google Patents
Info
- Publication number
- FR2264279B2 FR2264279B2 FR7408381A FR7408381A FR2264279B2 FR 2264279 B2 FR2264279 B2 FR 2264279B2 FR 7408381 A FR7408381 A FR 7408381A FR 7408381 A FR7408381 A FR 7408381A FR 2264279 B2 FR2264279 B2 FR 2264279B2
- Authority
- FR
- France
- 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
Links
Classifications
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Atmospheric Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Optical Communication System (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7408381A FR2264279A2 (en) | 1974-03-12 | 1974-03-12 | Visibility measurer with ambient light corrections - has numerical calculators determining visibility from transmission factor |
CA196,274A CA1000964A (en) | 1973-04-13 | 1974-03-28 | Measurement of atmospheric transmission factors and intensity of ambient light |
US05/459,435 US3931526A (en) | 1973-04-13 | 1974-04-09 | Process and a device for measuring transmission factors |
BR2915/74A BR7402915D0 (pt) | 1973-04-13 | 1974-04-10 | Processo para medida de fatores de transmissao e transmissiometro |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7408381A FR2264279A2 (en) | 1974-03-12 | 1974-03-12 | Visibility measurer with ambient light corrections - has numerical calculators determining visibility from transmission factor |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2264279A2 FR2264279A2 (en) | 1975-10-10 |
FR2264279B2 true FR2264279B2 (nl) | 1977-09-23 |
Family
ID=9136195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7408381A Granted FR2264279A2 (en) | 1973-04-13 | 1974-03-12 | Visibility measurer with ambient light corrections - has numerical calculators determining visibility from transmission factor |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2264279A2 (nl) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3419333A (en) * | 1965-09-01 | 1968-12-31 | Ind Res Associates Inc | Runway visual range computer system |
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1974
- 1974-03-12 FR FR7408381A patent/FR2264279A2/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2264279A2 (en) | 1975-10-10 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
DJ | Final judicial decision determining the rights related to a patent |