[Glen Akins] had a WW2-era aircraft engine cowl flap indicator lying around (as you do) and thought it would make a jolly fine USB-attached indicator. The model in question is a General Electric model ...

For more than 120 years, the English physicist Lord Rayleigh has had the last word on why flags flap in the breeze. A keen observer who figured out how the scattering of light makes the sky blue, ...

The nostalgic flap signs that once filled Penn Station and train stations around the world are now being brought back by a Philadelphia-based company, Oat Foundry. Specializing in “cool,” unique ...