Breaking News
Still Discriminating
Nike CEO may have just admitted the company went too woke as stock hits 12-year low
Will Europe Be Annihilated Over Kaliningrad?
The Last Asset--You Will Own Nothing
Top Tech News
Most artificial limbs rely on silicone or plastic to mimic human hands.
Flying cell tower beams phone signal to Japan from 10 miles up
Chinese Commercial Reactor Achieves Nuclear Fusion with Clean Hydrogen-Boron Fuel
Med Beds Just Took a MASSIVE Step Forward, Healing People in Days!
Palmer Luckey: Autonomous Weapons Are Ancient and Why Anduril Won't Build Humanoids | EP #295
A laser just photographed objects through six feet of concrete
Elon Musk's Next-Gen Motor Destroy Entire EV Industry
China's disputed satellite refueling heralds new space war era
BYD Will Put Solid-State Batteries In An EV Next Year: Executive
FDA-cleared exoskeleton puts spinal-cord patients back on their feet
You Can't Just Link Batteries Willy Nilly and Expect Everything to Be OK
Anyone who has taken introductory physics will recognize this famous question:
Why can't you start your car with 8 AAA batteries instead of one 12 volt car battery?
Eight AAA batteries do add up to 12 volts, but they still can't provide enough electrical current to run the starter motor. But that's not the whole story. Any battery has a limit on the maximum current it can produce.
To explain why, I'll make a model to represent a real battery.
The pair of vertical long-short lines (labeled V0;) right of center represent the ideal battery. Or, in other words, how much current the real battery would produce if it wasn't confounded by resistance (represented by the squiggly line labeled Ri). Yes, all of this ideal battery/confounding resistance stuff is going on inside the actual battery.