GB1483950A - Apparatus for measuring the speed of light by the foucault method - Google Patents

Apparatus for measuring the speed of light by the foucault method

Info

Publication number
GB1483950A
GB1483950A GB42559/75A GB4255975A GB1483950A GB 1483950 A GB1483950 A GB 1483950A GB 42559/75 A GB42559/75 A GB 42559/75A GB 4255975 A GB4255975 A GB 4255975A GB 1483950 A GB1483950 A GB 1483950A
Authority
GB
United Kingdom
Prior art keywords
light
measuring
speed
rotating mirror
foucault
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
GB42559/75A
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.)
Leybold Heraeus Verwaltung GmbH
Original Assignee
Leybold Heraeus Verwaltung GmbH
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
Priority claimed from DE19742455514 external-priority patent/DE2455514C2/en
Priority claimed from DE19752524738 external-priority patent/DE2524738C2/en
Application filed by Leybold Heraeus Verwaltung GmbH filed Critical Leybold Heraeus Verwaltung GmbH
Publication of GB1483950A publication Critical patent/GB1483950A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J7/00—Measuring velocity of light

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1483950 Measuring speed of light LEYBOLDHERAEUS-VERWALTUNG GmbH 16 Oct 1975 [23 Nov 1974 4 June 1975] 42559/75 Heading G2J To avoid the usual beam-splitting sheet of glass in the Foucault apparatus, the returning beam 10 is deflected, adjacent the rotating mirror 2, by one or more fixed optical elements e.g. prism 8 before falling on ground glass plate 11 for observation. In a modification Fig. 2 (not shown), two plane mirrors are fixedly mounted to face the rotating mirror 2. One is parallel to the axis of rotation while the other is at a small angle thereto.
GB42559/75A 1974-11-23 1975-10-16 Apparatus for measuring the speed of light by the foucault method Expired GB1483950A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19742455514 DE2455514C2 (en) 1974-11-23 1974-11-23 Device for determining the speed of light according to Foucault
DE19752524738 DE2524738C2 (en) 1975-06-04 1975-06-04 Device for determining the speed of light according to Foucault

Publications (1)

Publication Number Publication Date
GB1483950A true GB1483950A (en) 1977-08-24

Family

ID=25768013

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42559/75A Expired GB1483950A (en) 1974-11-23 1975-10-16 Apparatus for measuring the speed of light by the foucault method

Country Status (3)

Country Link
FR (1) FR2292222A1 (en)
GB (1) GB1483950A (en)
SE (1) SE7512208L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100483088C (en) * 2006-06-08 2009-04-29 复旦大学 Measuring method and its device for focus gauss light beam phase velosity distribution

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100483088C (en) * 2006-06-08 2009-04-29 复旦大学 Measuring method and its device for focus gauss light beam phase velosity distribution

Also Published As

Publication number Publication date
FR2292222B3 (en) 1978-08-25
FR2292222A1 (en) 1976-06-18
SE7512208L (en) 1976-05-24

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee