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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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Wednesday, 6 November 2019

Measurements Are Often Full of Lies—and That's OK

Does a balance measure mass or weight? This common question reveals a core confusion about lab instruments: It's not always obvious what they measure.

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