GB688819A - Improvements in or relating to electroscopes - Google Patents

Improvements in or relating to electroscopes

Info

Publication number
GB688819A
GB688819A GB2628751A GB2628751A GB688819A GB 688819 A GB688819 A GB 688819A GB 2628751 A GB2628751 A GB 2628751A GB 2628751 A GB2628751 A GB 2628751A GB 688819 A GB688819 A GB 688819A
Authority
GB
United Kingdom
Prior art keywords
image
graticule
microscope
electroscope
optical
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
GB2628751A
Inventor
Martin Oakley Pelton
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.)
British Optical & Prec Enginee
Original Assignee
British Optical & Prec Enginee
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 British Optical & Prec Enginee filed Critical British Optical & Prec Enginee
Priority to GB2628751A priority Critical patent/GB688819A/en
Publication of GB688819A publication Critical patent/GB688819A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J47/00—Tubes for determining the presence, intensity, density or energy of radiation or particles
    • H01J47/02—Ionisation chambers
    • H01J47/04—Capacitive ionisation chambers, e.g. the electrodes of which are used as electrometers

Landscapes

  • Mechanical Coupling Of Light Guides (AREA)

Abstract

688,819. Optical apparatus. BRITISH OPTICAL & PRECISION ENGINEERS, Ltd. Nov. 9, 1951, No. 26287/51. Classes 97 (i) and 98 (i). In an electroscope having a compound microscope with a graticule on which an image of the indicating member of the electroscope is formed by which its movement can be measured, the microscope is provided with optical means for moving the image across the graticule to set it to a given position thereon. As shown, the electroscope includes a movable quartz fibre 5, an image of of which is formed on a graticule 4 by an objective 3 and is observed in an eye-piece 2. A wedge 14 in a holder 15 is rotatable about the axis of the microscope and serves to adjust the image to a standard position on the graticule scale when a standard voltage is applied the the instrument, thereby allowing manufacturing differences to be compensated. The wedge may be attached to the objective, or the latter may comprise a rotatable lens having its optical axis eccentric to that of the microscope tube.
GB2628751A 1951-11-09 1951-11-09 Improvements in or relating to electroscopes Expired GB688819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2628751A GB688819A (en) 1951-11-09 1951-11-09 Improvements in or relating to electroscopes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2628751A GB688819A (en) 1951-11-09 1951-11-09 Improvements in or relating to electroscopes

Publications (1)

Publication Number Publication Date
GB688819A true GB688819A (en) 1953-03-11

Family

ID=10241263

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2628751A Expired GB688819A (en) 1951-11-09 1951-11-09 Improvements in or relating to electroscopes

Country Status (1)

Country Link
GB (1) GB688819A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1027805B (en) * 1955-12-24 1958-04-10 Frieseke & Hoepfner Gmbh Tubular, open dosimeter
DE3344189A1 (en) * 1983-12-07 1985-06-20 FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt CHARGE SWITCH BUILT INTO A ROD DOSIMETER FOR IONIZING RADIATION

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1027805B (en) * 1955-12-24 1958-04-10 Frieseke & Hoepfner Gmbh Tubular, open dosimeter
DE3344189A1 (en) * 1983-12-07 1985-06-20 FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt CHARGE SWITCH BUILT INTO A ROD DOSIMETER FOR IONIZING RADIATION

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