SE7701172L - STOP HOUR FOR SCIENCE TEACHING - Google Patents

STOP HOUR FOR SCIENCE TEACHING

Info

Publication number
SE7701172L
SE7701172L SE7701172A SE7701172A SE7701172L SE 7701172 L SE7701172 L SE 7701172L SE 7701172 A SE7701172 A SE 7701172A SE 7701172 A SE7701172 A SE 7701172A SE 7701172 L SE7701172 L SE 7701172L
Authority
SE
Sweden
Prior art keywords
science teaching
hour
stop
stop hour
teaching
Prior art date
Application number
SE7701172A
Other languages
Swedish (sv)
Inventor
Wickeren J Van
C Harig
R Meyer
Original Assignee
Leybold Heraeus Gmbh & Co Kg
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 DE19767604548 external-priority patent/DE7604548U/en
Application filed by Leybold Heraeus Gmbh & Co Kg filed Critical Leybold Heraeus Gmbh & Co Kg
Publication of SE7701172L publication Critical patent/SE7701172L/en

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F10/00—Apparatus for measuring unknown time intervals by electric means
    • G04F10/04—Apparatus for measuring unknown time intervals by electric means by counting pulses or half-cycles of an ac
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0082—Visual time or date indication means by building-up characters using a combination of indicating elements and by selecting desired characters out of a number of characters or by selecting indicating elements the positions of which represents the time, i.e. combinations of G04G9/02 and G04G9/08
    • G04G9/0088—Visual time or date indication means by building-up characters using a combination of indicating elements and by selecting desired characters out of a number of characters or by selecting indicating elements the positions of which represents the time, i.e. combinations of G04G9/02 and G04G9/08 by controlling light sources, e.g. electroluminescent diodes
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/02—Visual time or date indication means by selecting desired characters out of a number of characters or by selecting indicating elements the position of which represent the time, e.g. by using multiplexing techniques
    • G04G9/04—Visual time or date indication means by selecting desired characters out of a number of characters or by selecting indicating elements the position of which represent the time, e.g. by using multiplexing techniques by controlling light sources, e.g. electroluminescent diodes
SE7701172A 1976-02-17 1977-02-03 STOP HOUR FOR SCIENCE TEACHING SE7701172L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19767604548 DE7604548U (en) 1976-02-17 Stopwatch for science lessons

Publications (1)

Publication Number Publication Date
SE7701172L true SE7701172L (en) 1977-08-18

Family

ID=6662111

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7701172A SE7701172L (en) 1976-02-17 1977-02-03 STOP HOUR FOR SCIENCE TEACHING

Country Status (3)

Country Link
FR (1) FR2341889A1 (en)
IT (1) IT1078067B (en)
SE (1) SE7701172L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8621553U1 (en) * 1986-08-11 1987-06-04 Zang, Klaus Dieter, Prof.Dr.Med., 6650 Homburg, De
US4920524A (en) * 1988-08-22 1990-04-24 Kotob Mohammed N Multimode digital timepiece

Also Published As

Publication number Publication date
FR2341889A1 (en) 1977-09-16
DE7604548U1 (en) 1976-02-17
IT1078067B (en) 1985-05-08

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