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Do you Still Need A TV Aerial?

At the moment you need TV Aerials for Freeview and BT Vision but there is the Freesat alternative that is by a satellite dish. But I beli...

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Monday, 18 March 2019

Need an Ohm's Law Party Trick? Take a Lightbulb's Temperature

We can measure the temperature of an incandescent bulb's filament while it's connected to a variable DC power supply.

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