last updated 2/9/12

ASTRONOMY 330 LINKS PAGE


HISTORY

Excellent history of astronomy up to the time of Galileo

New interactive history of cosmology website from the American Institute of Physics

The Story Behind the Science -- bringing science and scientists to life!

Click below for some wonderful biographies; here is the main index of the website.

         Ptolemy   Hipparchus  Copernicus   Kepler  Brahe*  Galileo  Newton  Halley

*Click on the link "Tycho Brahe's Nose" for a more "colorful" Tycho Brahe page, including his nose, his pet moose and his death.

The Shapley-Curtis Debate (for later in the semester)


GOOD GENERAL WEBSITES WITH RELEVANT MATERIAL

George Rieke's online class notes - excellent!

General astronomy animations and figures

Online notes from astronomy class at U. Oregon


EXPLAINING THE SKY: COPERNICUS VS. ARISTOTLE & PTOLEMY

Heliacal Rising of Sirius

Schematic of what retrograde motion looks like. Double-click the image to start.

What it really looks like, shown here when Jupiter and Saturn happened to be located in the same part of the sky.

Retrograde Motion - Ptolemy's explanation

Retrograde Motion - Copernicus' explanation


SCALE

Refresher on Scientific Notation

Powers of Ten applet

Here's an actual SCALE MODEL of the solar system that was constructed along Route 1 in Maine. The scale is 1 mile=1 AU. (1 AU = the distance from the Earth to the Sun = 93 million miles = 150 million km.) At this scale, the nearest star would be beyond the real orbit of the moon!


MATH REVIEW; ANGLES & PARALLAX

Math Review #1

Discussion of Angles

Explanation of distances in astronomy, and parallax

A Parallax applet


GRAVITY

Galileo was right!

Newton's Mountain

An Interactive applet for Kepler's Laws, Retrograde Motion, Inner Planet Phases, and more...


LIGHT, ATOMS & SPECTRA

Transverse and Longitudinal Waves

Rieke page on light

Electromagnetic spectrum

Atmospheric transmission

The Bohr Atom

Hydrogen line series

The Periodic Table

The Rutherford Experiment:
if positive charge were evenly spread throughout an atom
if the positive charge were concentrated in a tiny nucleus

Kirchhoff's Laws

An image of the Orion Nebula (red=hydrogen gas!)

Stellar Spectral types

Inverse square law equation

Inverse square law diagram

Rieke page on Doppler Effect and spectra

Doppler effect in 30 mph Volvo from Exploratorium

A Doppler applet

Radar Ranging

Doppler Radar

Spectra of Stars


THERMODYNAMICS & PARTICLES

Temperature scales

Blackbodies at different temperatures

Blackbody applet

Equipartition of energy explanation - scroll down to "Temperature"


CEPHEID VARIABLE STARS

Standard Candles

Cepheid variable stars on the HR Diagram

All about Delta Cephei and Cepheid variables

H. Leavitt

Schematic Cepheid Light Curve

Schematic Cepheid light curves at different P

The Period-Luminosity relation

Demonstration of the Cepheid Preiod-Luminosity relation

Movie of a Cepheid in M100

Hunting for Cepheid Variables in M100


DISTANCE SCALES

Michael Richmond's page on the extragalactic distance scale

One version of the extragalactic distance ladder


IMAGES & SKYWATCHING

The Globe at Night - 2012, a worldwide effort to map and raise awareness of light pollution

Hubble Space Telescope Latest Information

SKYLIGHTS: Weekly Astronomy News & Images

Stars: Portraits of Stars and Their Constellations

Sky & Telescope Interactive Star Charts


You are visitor , courtesy of at www.digits.com

Back to Astronomy 330 home page
Back to Astronomy 330 syllabus.