These guys say that a closed system with significant gravity can lower its entropy, via "negative energy", violating the Second Law of Thermodynamics.
This 1929 colonial-style house is typical of the houses built in Urbana-Champaign in its time. It was built with no insulation in the walls and only a thin layeyr of insulation in the attic and between the floors. It was originally heated by burning coal, but later switched to natural gas. At the time it was built, there was little concern about the environmental consequences of burning fossil fuels, including the threat of climate change.
Department of Physics 1110 West Green Street Urbana, IL 61801-3080Physics Library | Contact Us | My.Physics | Privacy Statement | Copyright Statement