BE506475A - - Google Patents
Info
- Publication number
- BE506475A BE506475A BE506475DA BE506475A BE 506475 A BE506475 A BE 506475A BE 506475D A BE506475D A BE 506475DA BE 506475 A BE506475 A BE 506475A
- Authority
- BE
- Belgium
- Prior art keywords
- instrument according
- units
- calculation instrument
- charac
- terized
- Prior art date
Links
- 238000004364 calculation method Methods 0.000 claims description 43
- 239000003086 colorant Substances 0.000 claims description 22
- 230000003213 activating effect Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000000873 masking effect Effects 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 210000001747 pupil Anatomy 0.000 description 3
- 239000012780 transparent material Substances 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 239000011796 hollow space material Substances 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 210000002105 tongue Anatomy 0.000 description 2
- 206010027646 Miosis Diseases 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 210000000887 face Anatomy 0.000 description 1
- 239000005338 frosted glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B19/00—Teaching not covered by other main groups of this subclass
- G09B19/02—Counting; Calculating
Landscapes
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Entrepreneurship & Innovation (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Toys (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE506475A true BE506475A (forum.php) |
Family
ID=146730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE506475D BE506475A (forum.php) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE506475A (forum.php) |
-
0
- BE BE506475D patent/BE506475A/fr unknown
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