SE7701172L - STOP HOUR FOR SCIENCE TEACHING - Google Patents
STOP HOUR FOR SCIENCE TEACHINGInfo
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8621553U1 (en) * | 1986-08-11 | 1987-06-04 | Zang, Klaus Dieter, Prof.Dr.med., 6650 Homburg | Electric clock |
US4920524A (en) * | 1988-08-22 | 1990-04-24 | Kotob Mohammed N | Multimode digital timepiece |
-
1977
- 1977-02-03 SE SE7701172A patent/SE7701172L/en unknown
- 1977-02-15 FR FR7704254A patent/FR2341889A1/en not_active Withdrawn
- 1977-02-17 IT IT20400/77A patent/IT1078067B/en active
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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