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Here's a supposed demo of the device in action: http://on.aol.com/video/ubeam-wireless-power-demonstration-at-d9-517342543 http://on.aol.com/video/ubeam-wirele

Here's a supposed demo of the device in action: http://on.aol.com/video/ubeam-wireless-power-demonstration-at-d9-517342543 http://on.aol.com/video/ubeam-wireless-power-demonstration-a... Only thing is that I want to see what's in the box on the left. There's nothing to show that the transmitters are actually transferring power and aren't simply telling the other side to turn on and change resistivity to a hidden battery on the left hand side (or even draw from the battery in the iPhone connected to the left hand side) Furthermore, that's a pretty janky analog multimeter to be using for anyone doing electronics, and it's currently set to measure resistivity, not current or voltage.

danbruc 12y ago
It's set to the 10V AC range and for such a demo an analog display is a better choice, way easier to see the change than by looking at a LCD display.
- malandrew 12y ago
  So it is. I tried to find a big picture of that multimeter to see what it was set to because the video image quality it poor, but now on closer inspection I can see it's set to AC volts. The most similar analog radio shack model I could find a picture of extended the resistance area further up the dial.
jacquesm 12y ago
Current or voltage is not relevant you want current and voltage. Just voltage without Ri doesn't mean anything, you could easily get any kind of voltage by using a simple transformer. That doesn't mean useful power is transferred for that you need to apply a load and measure current through the load and voltage across the load. Also, AC voltage on an analogue meter is usually calibrated at 50 or 60 Hz, not at much higher frequencies.