This web page describes inertial and non-inertial frames of reference, the latter being frames where Newton's laws do not hold. The text explains "fictitious forces", the centrifugal force and the Coriolis force, that...

This webpage, part of a National Aeronautics and Space Administration's site on the electromagnetic spectrum, presents information on infrared light. An explanation of how objects emit infrared is provided, along with a...

This web site is an extensive collection of images and descriptions of historical instruments used in the physical sciences. Images of over 1800 pieces of apparatus are included along with information and references...

The International Union of Pure and Applied Physics (IUPAP) was established in 1922. The aims of the Union are to stimulate and promote international cooperation in physics; to promote international agreements on other...

Kinetic City is an after-school standards-based science program in which kids complete activities in conjunction with a dynamic website. It includes science experiments, games, activities, challenges and more. It...