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The Physics Classroom is an online interactive tutorial of basic physics concepts. The lessons use an easy-to-understand language to present common physics principles discussed in a first-year high school physics course.

The Khan Academy is a not-for-profit 501(c)(3) with the mission of providing a world-class education to anyone, anywhere. Despite being the work of one man, Salman Khan, this 1600+ video library is the most-used educational video resource as measure...

Space and astronomy news

YouTube is a place to discover, watch, upload and share videos.

Synopsys

For over 65 years Edmund Optics (EO) has been a leading producer of optics, imaging, and photonics technology.

Ontario science curriculum. Has lesson plans, experiments and activities (Ont. 6 and 8) on light and optics, electricity, cells, tissues and organ systems, diversity of living things, air/flight, machines and mechanical efficiency.

Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.

Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...

Fact Monster is a free reference site for students, teachers, and parents. Get homework help and find facts on thousands of subjects, including sports, entertainment, geography, history, biography, education, and health.