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GB540068A - Improved means for exploring local intensities in high-frequency electromagnetic fields - Google Patents

Improved means for exploring local intensities in high-frequency electromagnetic fields

Info

Publication number
GB540068A
GB540068A GB1047340A GB1047340A GB540068A GB 540068 A GB540068 A GB 540068A GB 1047340 A GB1047340 A GB 1047340A GB 1047340 A GB1047340 A GB 1047340A GB 540068 A GB540068 A GB 540068A
Authority
GB
United Kingdom
Prior art keywords
field
photo
frequency
cell
electromagnetic fields
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
GB1047340A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1047340A priority Critical patent/GB540068A/en
Publication of GB540068A publication Critical patent/GB540068A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
    • G01R29/0878—Sensors; antennas; probes; detectors

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

540,068. Photo-electric apparatus for measuring electromagnetic fields. STRAUSS, S. June 17, 1940, No. 10473. [Class 40 (iii)] [Also in Group XXXVI] An apparatus for measuring the local intensity of a high-frequency electromagnetic field, especially for electrotherapeutical purposes, comprises a luminous discharge device of small dimensions relatively to the field and adapted to be introduced in said field and be excited to luminescence in proportion to the local intensity of the field in combination with a photo-metric device for determining the intensity of the luminescence. As shown, a discharge device 1 consisting of an electrodeless bulb filled with gas at low pressure is arranged at one end of a light-tight tube 2 of electrically insulating material enclosing at its other end a photo-electric cell 3 to which light is directed by a glass tube 5 extending between the bulb and the cell. The cell 3 is connected to a measuring instrument 4 in shunt with a variable resistance 6 which can be set in accordance with the frequency of the field so that the reading of the measuring instrument may be correct for that field frequency.
GB1047340A 1940-06-17 1940-06-17 Improved means for exploring local intensities in high-frequency electromagnetic fields Expired GB540068A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1047340A GB540068A (en) 1940-06-17 1940-06-17 Improved means for exploring local intensities in high-frequency electromagnetic fields

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1047340A GB540068A (en) 1940-06-17 1940-06-17 Improved means for exploring local intensities in high-frequency electromagnetic fields

Publications (1)

Publication Number Publication Date
GB540068A true GB540068A (en) 1941-10-03

Family

ID=9968490

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1047340A Expired GB540068A (en) 1940-06-17 1940-06-17 Improved means for exploring local intensities in high-frequency electromagnetic fields

Country Status (1)

Country Link
GB (1) GB540068A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386315A (en) * 1980-04-22 1983-05-31 Friedmann, Youn And Associates Inc. Electric field detector
US4912404A (en) * 1989-01-09 1990-03-27 American Technical Ceramics Corporation Instrument for tuning and testing radio frequency circuits

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386315A (en) * 1980-04-22 1983-05-31 Friedmann, Youn And Associates Inc. Electric field detector
US4912404A (en) * 1989-01-09 1990-03-27 American Technical Ceramics Corporation Instrument for tuning and testing radio frequency circuits

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