I work a lot with high voltages and others frequently replicate my projects, so I often get asked “What voltage is needed?”. That means I need to be able to measure high voltages. Here’s ...

The cones are coated in a liquid metal — [Zach] used Galinstan, an alloy of gallium, indium, and tin — and an high voltage is applied between the liquid metal and an extraction electrode.

According to the Electric Vehicle Council’s latest State of EVs report, EV sales now represent 9.5 per cent of all new car purchases in Australia, marking a remarkable 150 per cent increase in market ...