Engineering

Shapes of Constant Width

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Why are wheels round? How do vending machines identify coins? Explore the answers to these questions by looking at some alternative shapes of constant width, maybe the circle isn't as unique as you first thought.

How do vending machines identify coins?
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Engines

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Have you ever wondered what an engine is? Learn about how various types of engines work from the ubiquitous Internal Combustion Engine found in almost every car ever made to a small engine which runs on nothing but hot water!

What are the different types of engine, and how do they work?
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