Category: Images

Forces at Work: Cantilever Bridges

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Cantilever bridges are subject to the two basic forces that are in effect for all bridges. These forces are compression and tension. In a cantilever bridge, with the space between the cantilevered portion spanned by a suspended deck, the compression and tension are straightforward. As you can see in this diagram above, from Merriam-Webster, a […]

Forces at Work: Beam Bridges

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Beam bridges are subject to the two basic forces that are in effect for all bridges. These forces are compression and tension. These forces are at work in a beam bridge in an arguably more direct manner than in other bridges. With a beam bridge, with its single deck, the deck itself is subject to […]

Garnerin Doodle

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Today is a big day in fluid dynamic history! It’s the 216th anniversary of the first successful parachute jump. Andre-Jacques Garnerin (1769-1823) accomplished this feat by going aloft attached to the bottom of a hot air balloon. “I was on the point of cutting the cord that suspended me between heaven and earth… and measured […]

Dusty Naval Guys

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Here they are. The men who take up my brain-space, time, and energy as I complete my book for Springer Verlag, tentatively titled, “Modeling Ships and Space Craft: The Science and Art of Mastering the Oceans and Sky” William Froude who championed and proved the value of scale model testing in the 1870’s. David Watson […]