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Conductivity of Glass NatSciDemos 3,525 views Insulating glass becomes a conductor of electricity when heated with a blowtorch. Two ceramic lightbulb sockets are wired in series to a household AC power cord. When tw...
Coffee Mug on String NatSciDemos 1,274 views Angular momentum helps save a red ceramic coffee mug from certain destruction. We used some string, two stolen mugs, and two Ticonderoga Dixon No. 2 pencils. Please do atte...
Balancing Forks NatSciDemos 1,563 views Two metal forks, a cork, and a matchstick balance on the lip of a glass. The center of mass of the fork-cork-match system is well below the pivot point, so balance is able ...
The Wineglass That Won't Break NatSciDemos 1,531 views (Warning: obnoxious sound) For some reason I can't get this wineglass to break. It's an Oregon Balloon Wine 22oz. (made in Slovakia) from our local Crate & Barrel. It seems...
Conductivity of Solutions NatSciDemos 2,177 views We look at the electrical conductivity of several solutions. Substances include tap water, distilled water, sodium chloride, hydrochloric acid, sodium hydroxide, sugar, vin...
Underwater Lightning Project NatSciDemos 7,963 views Many Pacific Island navigators have reported finding land by following mysterious streaks of light that extend between islands quite some distance away, and they report tha...
Chladni Plates NatSciDemos 5,466 views Four centrally mounted brass plates are driven into various resonant states with a violin bow. Sand sprinkled on the plates helps to visualize the nodes and antinodes for e...
Hydrogen and Chlorine Reaction NatSciDemos 39,022 views Hydrogen and Chlorine react explosively to form Hydrogen Chloride. The reaction is started by shining a small ultraviolet LED onto the test tube. The cork at the end of the...
Shoot-n-Drop NatSciDemos 2,779 views An apparatus that at once shoots a billiard ball horizontally and drops another one vertically from an equal height. Even though the two have different initial velocities, ...
Olive-Wineglass Puzzler with Actual Olive NatSciDemos 7,040 views A wineglass transfers a small green olive to another glass using centripetal motion and friction. Shot in 300fps using a Casio EX-F1. Thanks to Rob for letting us use the c...

About NatSciDemos's channel

The official YouTube channel of Harvard Natural Science Lecture Demonstrations. Here we have collected as a resource for science instructors short pieces that show some of our demonstration experiments. Most of the entries here link to more detailed descriptions of the demos on our website.

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