Everyone loves wireless power these days, almost vindicating [Nikola Tesla’s] push for wireless power. One reason why transmitting electricity this way is a terrible idea is the massive losses ...

[James] has a friend who teaches at the local community college. When this friend asked him to build a transformer coupling simulation, he was more than happy to oblige. Fortunately for us, he also ...

Wireless charging system described by using the method of inductive coupling. In this paper, oscillation circuit converts DC energy to AC energy (transmitter coil) to transmit magnetic field by ...

January 15, 2009 The promise of wireless electricity has been around for over 100 years. Nikola Tesla spent much of his productive life experimenting with wireless power, the familiar Tesla coils is ...

When news breaks, you need to understand what actually matters. At Vox, our mission is to help you make sense of the world — and that work has never been more vital. But we can’t do it on our own. We ...

Your support goes further this holiday season. When you buy an annual membership or give a one-time contribution, we’ll give a membership to someone who can’t afford access. It’s a simple way for you ...

Battery life is one of the most vexing problems in mobile tech. Indeed, Smartphone users consistently rate battery life as their No. 1 gripe. Consumers want better batteries, not wearables. So Apple’s ...