Lord Kelvin’s Thunderstorm
Create high-voltage sparks using nothing more than falling water as the source of energy.
Create high-voltage sparks using nothing more than falling water as the source of energy.
See yourself as others see you with a true mirror.
This small table fits young kids perfectly — and they can scribble to their hearts’ content on the dry-erase tabletop.
The brilliant Meara O’Reilly describes how to wind your own electromagnetic guitar pickups on sewing machine bobbins.