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An Example of Clea Activities in the Training of School Teachers

Published online by Cambridge University Press:  12 April 2016

L. Bottinelli ,
J. Dupré ,
M. Gerbaldi  and
L. Gouguenheim
L. Bottinelli
Affiliation:
Astronomie, Bât. 470Université Paris Sud, 91405 Orsay Cedex, France Observatoire de Paris, Section de Meudon, 92195 Meudon, France
J. Dupré
Affiliation:
Astronomie, Bât. 470Université Paris Sud, 91405 Orsay Cedex, France
M. Gerbaldi
Affiliation:
Astronomie, Bât. 470Université Paris Sud, 91405 Orsay Cedex, France Institut d’Astrophysique, 98 bis Bd. Arago, 75014 Paris, France
L. Gouguenheim
Affiliation:
Astronomie, Bât. 470Université Paris Sud, 91405 Orsay Cedex, France Observatoire de Paris, Section de Meudon, 92195 Meudon, France

Extract

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Various simple activities are being developed by the French Comité de Liaison Enseignants Astronomes (CLEA) in the training of school teachers. We give in the following one example of a very simple instrument which we call “Alphonse’s box,” after Alphonse Delavergne who invented it. It is also called a heliograph. This very simple and inexpensive instrument enables (1) the plotting of the daily apparent path of the sun, (2) the determination of the duration of sunlight, and (3) the determination of the declination of the sun. The following description is due to Maryse Jonas:

1. photosensitive paper (used by architects) that can be handled in semi-darkness; its sensitive face is yellow and it is developed by the vapor of an ordinary ammonia solution in about ten minutes;

2. a simple can, with a cover that will shut tight; approximate dimensions: diameter 10 cm, height 15 cm, with a hole about 0.5 mm in diameter on one side;

3. two pieces of wood, 15 x 15 cm and 15 x 20 cm; one butt hinge; one threaded rod with two nuts and two washers.

Type
10. Teacher Training
Information
International Astronomical Union Colloquium , Volume 105: The Teaching of Astronomy , 1990 , pp. 294 - 296
Copyright
Copyright © Cambridge University Press 1990