Allgemein
Astronomie
in Österreich
Universitätsinstitute und -observatorien. Öffentliche Sternwarten.
Planetarien. Vereine. Zeitschriften.
http://www.kfunigraz.ac.at/astwww/EAAEA/astron.htm
Wiener Arbeitsgemeinschaft für Astronomie
Alexander Pikhard - admin@waa.at
Willkommen bei Wiens aktivem astronomischem
Verein. Wir informieren über Aktuelles aus der astronomischen
Forschung und über unsere eigenen Aktivitäten auf dem Gebiet der
Amateurastronomie. Steigen Sie mit uns in die faszinierende Welt
der Astronomie ein!
http://www.waa.at/
Astronomie
bei Multimedia-Physik
Peter Krahmer - krahmer@t-online.de
Diese Seiten geben einen Überblick zur Astronomie im Internet. Die Links
wurden in klassischer Weise geordnet: von der Erde übers Planetensystem zu
den Sternen und schließlich zu Nebeln, Galaxien mit Kosmologie und
Kosmogonie. Raumfahrt und optische Geräte und Links zu Sternenfreunden
fehlen natürlich nicht. Eine sehr umfangreiche Linksammlung.
http://www.wuerzburg.de/mm-physik/such5.html
Astroinfo
Astronomie im Cyberspace mit monatlich aktuellen Themen;astro!nfo
(sprich: astro-info) ist ein Service für astronomische Informationen. Er
wird ehrenamtlich von Wissenschaftlern und Amateurastronomen unterhalten; in
cooperation with the Swiss Astronomical Society (in deutscher und englischer
Sprache).
http://www.astroinfo.org/deutsch.html
Astronomie.de
Kontakt
Das Team von Astronomie.de besteht aus engagierten Amateurastronomen, die es
sich zum Ziel gesetzt haben, eine sinnvolle Ergänzung des bislang
vorhandenen Informationsangebotes im deutschsprachigen Internet zu schaffen.
http://www.astronomie.de/
AN
ASTRONOMY COURSE FOR STUDENTS USING THE
INTERNET
Jack C. Troeger - troegerj@iastate.edu
http://www.cnde.iastate.edu/staff/jtroeger/astronomy.html
Cambridge
Relativity
These Cambridge Relativity and Cosmology public home pages have been created
in response to the UK Particle Physics & Astronomy Research Council (PPARC)
drive to improve the public understanding of science and technology (PUST).
http://www.damtp.cam.ac.uk/user/gr/public/
|
Galileo
and Einstein
Michael Fowler - mfowler@virginia.edu
The course explores two revolutions in our perception of the universe. The
first, in which Galileo played the leading role, was the realization that
what we see in the heavens -- the moon, the planets, the sun and stars --
are physical objects. For example, the moon has a rocky surface, not
unlike some parts of earth, and is not made of some exotic ethereal
substance, as had been generally believed before Galileo. This discovery led
to the realization that the motions of the moon and planets obeyed the same
physical laws as ordinary things moving on earth. Newton put this all
together to give the first unified picture of the universe.
The second revolution
was Einstein's realization that this was not the whole truth --
space and time are not as straightforward as they first appear,
but are related to each other in a simple but unexpected way. Among
other results, this leads to the surprising consequence that mass and
energy are different aspects of the same thing!
The course will follow
the development of ideas approximately in the historical sequence. It
will begin by reviewing some of the Greek contributions to math and
science, which were essential to both Galileo and Einstein in their
work. We shall prove -- and find very useful -- Pythagoras' theorem,
and a few other ideas about triangles. We shall also look at Greek
ideas about the solar system, and how they measured the distance to
the moon quite accurately (using the ideas about triangles!).
http://galileoandeinstein.physics.virginia.edu/home.html |
- Counting
in Babylon
- Early
Greek Science: Thales to Plato
- Motion
in the Heavens: Stars, Sun, Moon, Planets
- Aristotle
- Measuring
the Solar System
- Greek
Science after Aristotle
- Basic
Ideas in Greek Mathematics
- How
the Greeks used Geometry to Understand the Stars
- Galileo
and the Telescope
- Life
of Galileo
- Scaling:
why giants don't exist
- Galileo's
Acceleration Experiment
- Naturally
Accelerated Motion
- Describing
Motion
- Tycho
Brahe and Johannes Kepler
- Isaac
Newton
- How
Newton Built on Galileo's Ideas
- The
Speed of Light
- The
Michelson-Morley Experiment
- Special
Relativity
- Special
Relativity: What Time is it?
- Special
relativity: Synchronizing Clocks
- Time
Dilation: A Worked Example
- More
Relativity: the Train and the Twins
- Momentum,
Work and Energy
- Adding
Velocities: A Walk on the Train
- Conserving
Momentum: the Relativistic Mass Increase
|
Antike
Astronomie
Julius Rabl - webmaster@antikenaturwissenschaft.de
Selbst der unkundigste Laie von heute fühlt sich den antiken Astronomen überlegen,
weil er sich ja im Besitz der Wahrheit wähnt. Dieses Bild wird korrigiert,
wenn man die Entwicklung der Astronomie als geschlossenen Vorgang begreift.
So hatten die ersten Astronomen als einzigen Anhaltspunkt die Phainomena am
Tag- und Nachthimmel. Die späteren Astronomen bemühten sich, den Himmel
mathematisch zu erfassen, dann konnten Aussagen über das Weltbild gemacht
werden. Die Astronomie nach Kopernikus war kein Neuanfang, sondern baute auf
diesem Fundament auf. Die heute weit verbreitete Vorstellung, die Astronomie
sei bis Kopernikus keine Wissenschaft gewesen und alle Astronomen vor ihm hätten
nichts Bemerkenswertes geleistet, ist so nicht richtig, da seit der Antike
mit dem Almagest ein umfassendes astronomisches Werk zur Verfügung stand
und antike Astronomen durchaus in der Lage waren, exakte Berechnungen
anzustellen. Diese Facharbeit versucht, die Entwicklung der Astronomie
nachzuzeichnen, die eng mit der Entwicklung des Weltbildes verbunden ist.
http://www.antikenaturwissenschaft.de/
Early
Greek Astronomy
Ellen N. Brundige
Since the first Egyptian farmers discovered the annual reappearence of Sirius
just before dawn a few days before the yearly rising of the Nile, ancient
civilizations around the Mediterranean have sought to explain the movements
of the heavens as a sort of calendar to help guide them conduct earthly
activities. Counting phases of the moon or observing the annual variations
of daylength could, after many years' collection of observations, serve as
vital indicators for planting and harvesting
times, safe or stormy
season for sailing,
or time to bring the flocks from winter to summer pastures. With our
millenia of such observation behind us, we sometimes forget that seeing and
recording anything less obvious than the rough
position of sun or nightly change of moonphase requires inventing both
accurate observation tools (a stone circle, a gnomon
used to indicate the sun's shadow, a means to measure the position of stars
in the sky) and a system of recording that could be understood by others (how
many fingers' width or degrees is that star from the horizon? Which
direction is due north?).
http://www.perseus.tufts.edu/GreekScience/Students/Ellen/EarlyGkAstronomy.html
The Two
Micron All Sky Survey at IPAC
 The
Two Micron All Sky Survey (2MASS) project is designed to
close the gap between our current technical capability and our knowledge
of the near-infrared sky. In addition to providing a context
for the interpretation of results obtained at infrared and other
wavelengths, 2MASS will provide direct answers to immediate questions
on the large-scale structure of the Milky Way and the Local Universe.
The optimal use of the next generation of infrared space missions,
such as HST/NICMOS, the Space Infrared Telescope Facility (SIRTF),
and the Next Generation Space Telescope (NGST), as well as powerful
ground-based facilities, such as Keck I, Keck II, and Gemini, require
a new census with vastly improved sensitivity and astrometric accuracy
than that previously available.
To achieve these goals, 2MASS
is uniformly scanning the entire sky in three near-infrared bands to detect
and characterize point sources brighter than about 1 mJy in each band, with
signal-to-noise ratio (SNR) greater than 10, using a pixel size of
2.0". This will achieve an 80,000-fold improvement in sensitivity
relative to earlier surveys.
http://www.ipac.caltech.edu/2mass/
SEDS
Eine virtuelle Reise durch das Sonnensystem. Großes Bildarchiv
(englischsprachig).
http://www.seds.org/
Galacticsurf: A
portal to the stars
Edouard RENY - galacticsurf@free.fr
 |
Solar
System |
 |
Relativity |
 |
Space
Art |
 |
Stars |
 |
Black
Holes |
 |
Space
Exploration |
 |
Exoplanets |
 |
Astro
softwares  |
 |
Press |
 |
Galaxies |
 |
Exobiology |
 |
Other
Space Portals |
 |
Cosmology |
 |
Space
Missions |
 |
Miscellaneous |
 |
Particle
Physics |
 |
Photo
Galeries |
 |
Personal
Astro Sites |
 |
The
best of Generalist Sites |
 |
Archive
of the best sites
of the month +
awards |
 |
Non
astro links |
http://galacticsurf.free.fr/
Astronomy
and Cosmology
tremor@netlabs.net
My goal for this web site is not limited to simply educating the public
about astronomy and cosmology, but focuses on making these otherwise complex
subjects presentable in an easy-to-read comprehensible form utilizing
comparisons and graphical aids.
http://www.netlabs.net/hp/tremor/index.html
PREDICTABLE
ASTRONOMICAL EVENTS
Jan Curtis - jcurtis@uwyo.edu
This book (more like a handbook) is intended to provide a general
appreciation for the rarity of planetary, lunar, and solar configurations in
the sky. Unlike many books on astronomy, I have attempted to show the rhythm
of the planets and their moons and have provided excellent references in
each footnote for those seeking more details. The bibliography also suggest
additional reading sources for those interested. There are undoubtedly more
examples of interesting and unusual celestial alignments which I encourage
you to explore with today's astronomy software. The bottom line is that if
you are not motivated to take your telescope or binoculars outside one very
cold winter's night, maybe you will if you realize that you won't have a
second chance to observe a once-in-a-lifetime Predictable Astronomical
Event.
http://climate.gi.alaska.edu/Curtis/astro.html
|
