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When the astronauts went to the Moon they left behind a reflector
so we can measure the distance with incredible accuracy. Using
simple ideas, simple maths, and a whole lot of clever thinking,
we can measure how far away the Moon is from a closed room, using
nothing but a stopwatch, a pendulum, and a lot of clever thinking.
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The talk culminates in the actual measurement. When given as a
workshop the equations are derived, and then the workshop attendees
themselves make the measurement. Then we can gather the data and
look at the spread of results, asking the question - where does the
variability come from? In this way we can explore many questions
that arise in real life.
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