Physics Reference Desk

The Data Analysis BriefBook
A condensed handbook, or an extended glossary, covering subjects in statistics, computing, analysis, and related fields. - From CERN

Evaluated Nuclear Structure Data File
Query a database for nuclear data.

Guide for Using the International System of Units (SI)
The right way to use metric units, from NIST (the National Institute of Standards).

Periodic Table
Los Alamos National Laboratory's resource table for Elementary, Middle School, and High School Students.

Table of Nuclides
An online version of the standard chart for tracing radioactive decay paths. You can zoom in on an area and then pull up nuclear data on a particular isotope.

Unit Conversion Calculator
A JavaScript calculator to make various unit conversions for you - feet to meters, fahrenheit to Kelvin etc.

WebElements
Displays a periodic table from which you can click on any element to obtain a huge amount of data. E.g. atomic mass, nuclear, thermodynamic, crystallographic etc.

X-ray Properties Periodic Table
A periodic table that brings up x-ray properties of the elements.