Spectrum discharge tubes contain gases that, when ignited, emit different waves of light (or the gas’s spectral lines). This is how scientists are able to determine the gaseous make-up of planets in our solar system. This hydrogen spectrum discharge tube is approximately 10.25 inches long with electrodes sealed at both ends that are connected to lead wires protected by metal caps. It needs an induction coil spark of approximately 5cm or a suitable power supply for use. Recommended for use by adults only, this is excellent for use in classroom demonstrations or college-level science projects.
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
Use this awesome prism to teach about optics and light in the classroom setting!
The large realistic model has removable organs that can be studied and set back into the correct position.
This glass Erlenmeyer mug makes an excellent gift!
Build a model green house and 9 other green energy-related devices with this great kit!
This adapter-powered butterfly uses Flexinor wires to create a realistic visual effect!
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