The address is One Physics Ellipse, College Park, Maryland 20740-3843. Use the Green Line Metro Station at the University of Maryland. It is a short walk to the Center. See or write for the Science Teachers Newsletter , No. 64 for January 1996, which had information on the Center. These include meteorology, geology, flora, fauna and exploration.
Some displays are interactive.
Films are shown, and there is a store where videos, books and other items may be purchased. It is a very worthwhile place to visit in downtown Washington. Use the Metro Stop - Farragut North. Teflon is a polymer of perhaps as many as thousands of one specific molecule joined in a chain. Teflon is stable from low temperatures up to 400 C or so.