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The title says it all: this blog features physics videos found everywhere on the web: animations, demonstrations, lectures, documentaries.
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Friday, 25 November 2011

Conductivity of Solutions

We look at the conductivity of several solutions. Substances include tap water, distilled water, sodium chloride, hydrochloric acid, sodium hydroxide, sugar, vinegar, ethanol, and barium sulfate. The solutions are mixed to approximately the same ratios. The tester is a pair of stripped copper wires at line voltage in series with a 25W incandescent bulb. The probe is rinsed in distilled water between each test.

Harvard Natural Sciences Lecture Demonstrations

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