BE458082A - - Google Patents
Info
- Publication number
- BE458082A BE458082A BE458082DA BE458082A BE 458082 A BE458082 A BE 458082A BE 458082D A BE458082D A BE 458082DA BE 458082 A BE458082 A BE 458082A
- Authority
- BE
- Belgium
- Prior art keywords
- map
- sky
- transparent boards
- shutter
- phosphorescent
- Prior art date
Links
- 238000002955 isolation Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012780 transparent material Substances 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
- G09B27/00—Planetaria; Globes
- G09B27/04—Star maps
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Astronomy & Astrophysics (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Electrically Operated Instructional Devices (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE458082A true BE458082A (ca) |
Family
ID=111444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE458082D BE458082A (ca) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE458082A (ca) |
-
0
- BE BE458082D patent/BE458082A/fr unknown
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