This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...

Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics attempts ...

Expertise from Forbes Councils members, operated under license. Opinions expressed are those of the author. Membership (fee-based) Forbes Technology Council is an invitation-only, fee-based ...