Science: Is it True?

Dear All,

Is science true? Yes, that is the question. Is it really, really true? Helping to motivate this discussion, we recently assailed upon a little philosophy of math, here, where we remarked and marveled how math can represent both real and non-real things and yet both kinds can teach us about reality.

I thought this was incredible, and so it is! However, I used the Navier-Stokes equations in fluid mechanics as an example and as one commenter stated, even the respected Navier-Stokes equations aren’t true in the hard sense…they neglect many things like radioactive decay. This did not sit well with me, for I like to think what I am doing is true, and caused me to wonder what is truth, and what in science matches this. Let’s combine this discussion with a little science history.

Navier-Stokes momentum equation

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Purchasing the Wind Tunnel Fan

Dear Fellow Basement Scientists,

I hope you all are pursuing your interests and attempting to satisfy your curiosity. With many other good things, it is fun and rewarding, but can take hard work. Alright, in our wind tunnel project our next piece of construction takes us to the diffuser! Recall our general wind tunnel design (in blue), appropriately drawn on the back on an envelope, You can see the diffuser on the right of the test section, it is long and expands to larger than the fan, in order to house it: