FR687543A - Perfectionnements aux colorimètres - Google Patents

Perfectionnements aux colorimètres

Info

Publication number
FR687543A
FR687543A FR687543DA FR687543A FR 687543 A FR687543 A FR 687543A FR 687543D A FR687543D A FR 687543DA FR 687543 A FR687543 A FR 687543A
Authority
FR
France
Prior art keywords
colorimeter
colorimeter improvements
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
English (en)
Inventor
Felix Pellin
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 FR687543A publication Critical patent/FR687543A/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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/29—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual 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)
FR687543D 1929-03-25 1929-03-25 Perfectionnements aux colorimètres Expired FR687543A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR687543T 1929-03-25

Publications (1)

Publication Number Publication Date
FR687543A true FR687543A (fr) 1930-08-09

Family

ID=9026200

Family Applications (1)

Application Number Title Priority Date Filing Date
FR687543D Expired FR687543A (fr) 1929-03-25 1929-03-25 Perfectionnements aux colorimètres

Country Status (1)

Country Link
FR (1) FR687543A (fr)

Similar Documents

Publication Publication Date Title
FR699227A (fr) Perfectionnements aux ventilateurs
FR703950A (fr) Perfectionnements aux centrifugeuses
FR694061A (fr) Perfectionnements aux chaussures
FR686668A (fr) Perfectionnements aux bigoudis
FR675625A (fr) Perfectionnement aux pneumatiques
FR38490E (fr) Perfectionnements aux bigoudis
FR704580A (fr) Perfectionnements aux centrifugeurs
FR695182A (fr) Perfectionnements aux sièges
FR679834A (fr) Perfectionnements aux abat-jour
FR687543A (fr) Perfectionnements aux colorimètres
FR704442A (fr) Perfectionnements aux cordages
FR693091A (fr) Perfectionnements aux freins
FR696388A (fr) Perfectionnements aux tire-roues
FR702822A (fr) Perfectionnements aux télégraphones
FR689473A (fr) Perfectionnements aux micro-téléphones
FR695148A (fr) Perfectionnements apportés aux stylographes
FR37752E (fr) Perfectionnements aux malaxeurs
FR687000A (fr) Perfectionnements aux étuis
FR686431A (fr) Perfectionnements aux pneumatiques
FR678637A (fr) Perfectionnements aux moissonneuses
FR696027A (fr) Perfectionnements aux échafaudages
FR668449A (fr) Perfectionnements aux rotissoires
FR699228A (fr) Perfectionnements aux ventilateurs
FR667554A (fr) Perfectionnements aux ventilateurs
FR686320A (fr) Perfectionnement aux patinettes