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September
2000, Amsterdam - Projects -
France
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Nicolas
Conil (16)
School: Lycee Jean Moulin
Hobbies: Riding bike, gliding, programming with a computer,
astronomy
Career intention: Computer Engineer |
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Stephanie
Gaumon (16)
School: Lycee Jean Moulin
Hobbies: Astronomy, horse riding, water-ski, ski and tennis
Career intention: Astronomer
E-mail: Santhine3@aol.com
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Virginie
Laplane (18)
School: Lycee Jean Moulin
Hobbies: Astronomy, skiing and sociologie
Career intention: Anthropologist |
The motion
of planets
Our astronomy project aims at establishing the orbits of Mars,
Venus and the Earth by using photographs and software like Regressi
or any other, made by the same group. We have therefore taken
regular shots of Mars during its retrogradation in 1999 and
shots of Venus in the same year. We have also obtained an additional
set of photographs of Mars, through the Internet, concerning
the 1990 and 1997 retrogradations. Having processed the data
we found that Venus described a circle whose radius is 0.7AU
and that its revolution lasted 222 days. The orbit of Mars on
the other hand is an ellipse like that of the Earth (the eccentricity
in this case being somewhat lesser). However, despite the obvious
limitations of these models and because of an interest in the
chaos theory, we shall continue our study of these planets in
the coming months.
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Florent
Durrey (18)
School: Lycee Louis Le Grand
Hobbies: Astronomy, computers and sports
Career intention: Engineer in Aerospace Industry
E-mail: Helenedurrey@wanadoo.fr
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Globular
clusters around the Milky Way
Astronomy has always been a passion of mine and being able
to use professional equipment was a considerable motivation
for me to do this project, which objectives are to determine
the age of star clusters called globular clusters, as well
as their distance from Earth. For this purpose, a diagram
called the Hertzsprung-Russell's diagram has been established.
It features stars' luminosity in function of their colour.
Basic knowledge of stellar evolution enables us to measure
both these parameters. The study was carried out on five globular
clusters, observed in April 1999 at the Observatoire de Haute-Provence.
Pictures were taken with a CCD-camera on the 80-centimetre
telescope. An analysis of these pictures was made by a program
especially developed for this purpose. Results show that these
objects are very old and so far away that they don't belong
to our galaxy but only to its vicinity. Moreover, the conclusions
concord with previous results of similar studies carried out
by professionals.
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Emmanuel
Beliard (18)
School: Jules Heag High School
Hobbies: Tennis, rifle shooting, mountain biking, electronics
Career intention: Special engineer in electronics |
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Jaquad
Elkhalki (18)
School: Jules Heag High School
Hobbies: Basketball, cinema, computing, karate
Career intention: Special engineer in computing |
Viscosity
in the Jura pipeline
Our project is a study of the Jura pipeline. We were anxious
to know why the transport of petroleum should be so expensive
(about 7.6 million Euro's!). We choose to focus on a physical
aspect of the transport: viscosity. Therefore we built a pipeline
scale including a viscosimeter with which we had more experiments.
Through these we were able to understand the working of the
hydraulic circuit, but the yielding stress is something we have
not been able to explain yet.
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