This is a glass tube filled with neon gas and is similar to a section of an ordinary neon sign. When held and pointed at the dome of a Van de Graaf generator, the current will light the tube a bright orange. Neon is used, as it is the easiest gas to excite into emitting light. There is a large voltage drop across the tube, so the person holding it will not feel anything. A striking display, especially in a darkened room. The end of the tube is fitted with a foam rubber handle.
This genuine meteorite is great for the rock collector in your family!
Experience this sphere powered by the sun!
Great reference card for chemistry and physics students.
An ancient toy featuring optical illusion and hands-on fun that never grows old!
This great rock tumbling kit comes with everything you need to polish stones and gems!
Watch this laser pointer emit a cool purple beam!