Building a Model 4-Stroke Internal Combustion Engine (your car explodes gas 50x a second, how cool is that?!)

Building a Model 4-Stroke Internal Combustion Engine (your car explodes gas 50x a second, how cool is that?!)

Garage sales are great for finding random, interesting things to do with the kids, usually for dirt cheap. Last summer, I found this “Smithsonian Motor-Works” set for $5, which I figured was a steal. Once built, it’s supposed to model a 4-stroke internal combustion engine. I’d shelved it

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Charles Townes, The Laser, and Fostering Curiosity

Charles Townes, The Laser, and Fostering Curiosity

When I hear about a discovery or invention, it sometimes seems inevitable that the people involved should’ve ended up where they were, doing what they did, as if they were handed the situation or the whole thing were preordained. At the very least, I don’t give much thought

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