Nancy Bullard on MSN

Easy DIY model to show how your lungs really breathe

In this video I walk you through a simple DIY model that shows how the human respiratory system works. Using a plastic cup, ...
Hackaday

Electric Wind-Up Plane Uses Supercapacitors For Free Flight Fun

There’s something to be said for a simple wind-up, free flight model airplane. With no controls, it must be built very well ...