PopSci:
"Don’t wire a circuit—doodle it. To connect batteries to devices such as resistors and LEDs, a newly developed ballpoint pen uses silver-based ink that conducts electricity through lines drawn over paper, wood, plastic and even some textiles. Jennifer Lewis, the materials scientist who led the pen’s design at the University of Illinois, says she is now looking for business partners and hopes to have products that integrate the pen and ink on the market within a few months."
The supermassive black hole is 40 million times as massive as the sun and powers a quasar that existed 700 million years after the Big Bang.
The OnePlus Watch 2 is touted for having incredible battery life for a Wear OS watch, and that saved me when I forgot the charger on a trip.
Vision Pro is here and it’s a surprisingly capable device. Apple has also loaded the headset with a ton of options and features that aren’t obvious at first glance.
