FR1128488A - Mobile diaphragm apparatus - Google Patents

Mobile diaphragm apparatus

Info

Publication number
FR1128488A
FR1128488A FR1128488DA FR1128488A FR 1128488 A FR1128488 A FR 1128488A FR 1128488D A FR1128488D A FR 1128488DA FR 1128488 A FR1128488 A FR 1128488A
Authority
FR
France
Prior art keywords
diaphragm apparatus
mobile diaphragm
mobile
diaphragm
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
Other languages
French (fr)
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.)
Shell Research Ltd
Original Assignee
Shell Research Ltd
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 Shell Research Ltd filed Critical Shell Research Ltd
Application granted granted Critical
Publication of FR1128488A publication Critical patent/FR1128488A/en
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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/37—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using pneumatic detection

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (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)
FR1128488D 1954-04-05 1955-04-04 Mobile diaphragm apparatus Expired FR1128488A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB334161X 1954-04-05
GB310155X 1955-01-31

Publications (1)

Publication Number Publication Date
FR1128488A true FR1128488A (en) 1957-01-07

Family

ID=26260701

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1128488D Expired FR1128488A (en) 1954-04-05 1955-04-04 Mobile diaphragm apparatus

Country Status (3)

Country Link
CH (1) CH334161A (en)
FR (1) FR1128488A (en)
GB (1) GB774123A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19540072B4 (en) * 1995-10-27 2004-12-30 Emerson Process Management Manufacturing Gmbh & Co. Ohg Optical-pneumatic radiation detector

Also Published As

Publication number Publication date
GB774123A (en) 1957-05-08
CH334161A (en) 1958-11-15

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