ES2000761A6 - Educational visual aid particularly for demonstration in solid geometry. - Google Patents

Educational visual aid particularly for demonstration in solid geometry.

Info

Publication number
ES2000761A6
ES2000761A6 ES8600614A ES8600614A ES2000761A6 ES 2000761 A6 ES2000761 A6 ES 2000761A6 ES 8600614 A ES8600614 A ES 8600614A ES 8600614 A ES8600614 A ES 8600614A ES 2000761 A6 ES2000761 A6 ES 2000761A6
Authority
ES
Spain
Prior art keywords
ball
hoop
saddle
joint
visual aid
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
ES8600614A
Other languages
Spanish (es)
Inventor
Istvan Lenart
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.)
ORSZAGOS TANSZERGYARTO ES ERTE
Original Assignee
ORSZAGOS TANSZERGYARTO ES ERTE
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
Application filed by ORSZAGOS TANSZERGYARTO ES ERTE filed Critical ORSZAGOS TANSZERGYARTO ES ERTE
Publication of ES2000761A6 publication Critical patent/ES2000761A6/en
Expired legal-status Critical Current

Links

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
    • G09B27/08—Globes
    • 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
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/02—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics
    • G09B23/04—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics for geometry, trigonometry, projection or perspective

Landscapes

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Engineering & Computer Science (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Educational Technology (AREA)
  • Theoretical Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Educational Administration (AREA)
  • Geometry (AREA)
  • Algebra (AREA)
  • Astronomy & Astrophysics (AREA)
  • Drawing Aids And Blackboards (AREA)
  • Toys (AREA)
  • Instructional Devices (AREA)

Abstract

An educational visual aid, particularly for reproducing and studying various configurations and problems in solid geometry, consisting of a ball (1), with a surface suitable for being drawn or written on, and made of transparent or translucent or some other king of material a support (2) to hold the ball in position and a spherical ruler, adapted to the ball surface in any position. The spherical ruler is constructed from a hoop (3), a saddle (4) perpendicular to the hoop (3), and one or more handles (5). The support (2) is a torus under the ball (1), in order to hold the ball (1) firmly in any position on the torus (2). The tracer edges of the hoop (3) and the saddle (4) lie on arcs of great circles. Between the hoop (3) and the saddle (4) of the spherical ruler, a joint (6) is inserted, perpendicular to both of them, and also adapted to the surface of the ball (1). On the inner side of the joint (6) there are two tips of contact (10, 11), appropriately spaced on the outer side of the joint (6) there is a long-shaped, rounded supporting nose (7). The saddle (4) has a thin and solid handle plate (5) on its side preferably adjacent to the joint (6), with two rounded tips (5a, 5b) on the top of the plate (5).
ES8600614A 1985-07-25 1986-07-24 Educational visual aid particularly for demonstration in solid geometry. Expired ES2000761A6 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU852826A HU192681B (en) 1985-07-25 1985-07-25 Object-teaching instrument first of all for making solid geometric ideas known

Publications (1)

Publication Number Publication Date
ES2000761A6 true ES2000761A6 (en) 1988-03-16

Family

ID=10961272

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8600614A Expired ES2000761A6 (en) 1985-07-25 1986-07-24 Educational visual aid particularly for demonstration in solid geometry.

Country Status (11)

Country Link
EP (1) EP0267911A1 (en)
JP (1) JPS63501175A (en)
KR (1) KR880700376A (en)
AU (1) AU6139586A (en)
DD (1) DD255022A5 (en)
DK (1) DK149187A (en)
ES (1) ES2000761A6 (en)
HU (1) HU192681B (en)
IL (1) IL79441A (en)
IN (1) IN163289B (en)
WO (1) WO1987000668A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108731910B (en) * 2018-01-20 2020-10-27 中国科学院深海科学与工程研究所 Tracer spheres for experimental study of solid-liquid two-phase flow

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE925433C (en) * 1952-07-03 1955-07-18 Friedrich V Frhr Buddenbrock Dismountable teaching model of a spherical body
DE2228170A1 (en) * 1972-06-09 1974-01-03 Irving J Starworth GLOBE MADE FROM SECTIONS OF BALL SHELLS
SU734799A1 (en) * 1975-05-16 1980-05-15 Войсковая часть 60130 Globe

Also Published As

Publication number Publication date
AU6139586A (en) 1987-02-10
IL79441A0 (en) 1986-10-31
HU192681B (en) 1987-06-29
WO1987000668A1 (en) 1987-01-29
JPS63501175A (en) 1988-04-28
DK149187D0 (en) 1987-03-24
EP0267911A1 (en) 1988-05-25
KR880700376A (en) 1988-03-15
DK149187A (en) 1987-03-24
IN163289B (en) 1988-09-03
DD255022A5 (en) 1988-03-16
IL79441A (en) 1990-04-29

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20001102