An electric battery pump saves you having to carry CO2 cannisters on your bike. Or, Heaven forbid, an old-style manual pump. Just apply, press, and you're gone in 80 seconds. | Interesting Engineering

Discover how to make a home-made electric water pump, where electrical energy is converted into mechanical motion. Using simple components you can propel water from a tank to an outlet, demonstrating a seamless transfer of water through pressure and velocity. | Interesting Engineering