FR2135161A1 - - Google Patents

Info

Publication number
FR2135161A1
FR2135161A1 FR7212980A FR7212980A FR2135161A1 FR 2135161 A1 FR2135161 A1 FR 2135161A1 FR 7212980 A FR7212980 A FR 7212980A FR 7212980 A FR7212980 A FR 7212980A FR 2135161 A1 FR2135161 A1 FR 2135161A1
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.)
Granted
Application number
FR7212980A
Other languages
French (fr)
Other versions
FR2135161B1 (en
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.)
POLSKIE ZAKLADY OPTYCZNE
Original Assignee
POLSKIE ZAKLADY OPTYCZNE
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 POLSKIE ZAKLADY OPTYCZNE filed Critical POLSKIE ZAKLADY OPTYCZNE
Publication of FR2135161A1 publication Critical patent/FR2135161A1/fr
Application granted granted Critical
Publication of FR2135161B1 publication Critical patent/FR2135161B1/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/45—Refractivity; Phase-affecting properties, e.g. optical path length using interferometric methods; using Schlieren methods

Landscapes

  • 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)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
FR7212980A 1971-05-03 1972-04-13 Expired FR2135161B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL14791771A PL70816B1 (en) 1971-05-03 1971-05-03

Publications (2)

Publication Number Publication Date
FR2135161A1 true FR2135161A1 (en) 1972-12-15
FR2135161B1 FR2135161B1 (en) 1974-07-26

Family

ID=19954251

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7212980A Expired FR2135161B1 (en) 1971-05-03 1972-04-13

Country Status (5)

Country Link
DD (1) DD97303A5 (en)
DE (1) DE2216395A1 (en)
FR (1) FR2135161B1 (en)
GB (1) GB1384320A (en)
PL (1) PL70816B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3264770D1 (en) * 1981-08-20 1985-08-22 Graviner Ltd Improvements in and relating to fire and explosion detection and suppression
CN102998286B (en) * 2012-12-20 2014-10-15 重庆一心仪器仪表有限公司 Method for detecting concentration of methane by means of light interference

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Also Published As

Publication number Publication date
GB1384320A (en) 1975-02-19
DD97303A5 (en) 1973-04-20
PL70816B1 (en) 1974-04-30
FR2135161B1 (en) 1974-07-26
DE2216395A1 (en) 1973-03-15

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Legal Events

Date Code Title Description
ST Notification of lapse