FR1046452A - Dispositif de mesure directe d'affaiblissement de circuits de transmission d'ondes centimétriques et décimétriques - Google Patents

Dispositif de mesure directe d'affaiblissement de circuits de transmission d'ondes centimétriques et décimétriques

Info

Publication number
FR1046452A
FR1046452A FR1046452DA FR1046452A FR 1046452 A FR1046452 A FR 1046452A FR 1046452D A FR1046452D A FR 1046452DA FR 1046452 A FR1046452 A FR 1046452A
Authority
FR
France
Prior art keywords
centimetric
attenuation
direct measurement
transmission circuits
uhf transmission
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)
French (fr)
Inventor
Henri Jassin
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.)
Lignes Telegraphiques et Telephoniques LTT SA
Original Assignee
Lignes Telegraphiques et Telephoniques LTT SA
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 Lignes Telegraphiques et Telephoniques LTT SA filed Critical Lignes Telegraphiques et Telephoniques LTT SA
Application granted granted Critical
Publication of FR1046452A publication Critical patent/FR1046452A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/28—Measuring attenuation, gain, phase shift or derived characteristics of electric four pole networks, i.e. two-port networks; Measuring transient response
    • G01R27/32—Measuring attenuation, gain, phase shift or derived characteristics of electric four pole networks, i.e. two-port networks; Measuring transient response in circuits having distributed constants, e.g. having very long conductors or involving high frequencies
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/04—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with macromolecular additives; with layer-forming substances
    • G03C1/053—Polymers obtained by reactions involving only carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
    • G03C1/835—Macromolecular substances therefor, e.g. mordants

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
FR1046452D 1952-04-25 1951-12-15 Dispositif de mesure directe d'affaiblissement de circuits de transmission d'ondes centimétriques et décimétriques Expired FR1046452A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1051852A GB729924A (en) 1952-04-25 1952-04-25 Improvements in photographic materials

Publications (1)

Publication Number Publication Date
FR1046452A true FR1046452A (fr) 1953-12-07

Family

ID=9969301

Family Applications (2)

Application Number Title Priority Date Filing Date
FR1046452D Expired FR1046452A (fr) 1952-04-25 1951-12-15 Dispositif de mesure directe d'affaiblissement de circuits de transmission d'ondes centimétriques et décimétriques
FR1076452D Expired FR1076452A (fr) 1952-04-25 1953-04-25 Produits nouveaux pour la photographie

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR1076452D Expired FR1076452A (fr) 1952-04-25 1953-04-25 Produits nouveaux pour la photographie

Country Status (3)

Country Link
BE (1) BE519492A (enrdf_load_stackoverflow)
FR (2) FR1046452A (enrdf_load_stackoverflow)
GB (1) GB729924A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR1076452A (fr) 1954-10-27
BE519492A (enrdf_load_stackoverflow)
GB729924A (en) 1955-05-11

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