- NIST ONLINE
REFERENCE DATABASES:
all sorts of physical and chemical data online from the National
Institute of Standards and Technology. Spectroscopic data, half lives,
thermodynamic data, energy levels, etc. The latest.... continuously updated.
- THE DIGITAL SKY SURVEY:
at the Space Telescope Science Institute. Get a picture of any part of
the sky, knowing the name or the position of the object.
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SMITHSONIAN PHYSICAL TABLES:
this classic reference source comprises 901 tables of general interest
to scientists and engineers, and of particular interest to those involved
with physics in its larger sense." The downloadable tables include general
physics constants, constants for temperature measurement, the blackbody
and its radiant energy, temperature characteristics by material, latent heat,
thermal properties of gases, acoustics, geomagnetism, and many more.
- TIME SERVICE:
up to the second time from the US Naval Observatory
- PARTICLE DATA :
Databases on particle physics from the Particle Data Group at Lawrence
Berkeley Laboratories
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THE ASTRO CALCULATOR:
If you watch your units, this page makes it easy to do numerical problems
in physics, astronomy and astrophysics.
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STATISTICS: Distributions:
An informative Web Page on Statistics from the National
Institute of Standards and Technology.
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STATISTICS: Student t-test:
Another informative Web Page on Statistics from NIST.
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