The light interacts with the cavity and makes an arbitrary number of bounces before leaking out. This emergent light is traditionally treated as heat in quantum simulations. However, it can still be ...

Thermodynamic spontaneity—whether a reaction can go—can be measured by changes in either of two parameters: entropy or free energy.

In his March 23 article about the billboard on Interstate 35 and 151st Street, Dave Ranney reported about entropy arguments against evolution as given on a Web site and by David Penny. As Penny ...