Archive for June 5th, 2011
“Instead of depending on electrodynamic induction at a distance to light the tube . . . [the] ideal way of lighting a hall or room would . . . be to produce such a condition in it that an illuminating device could be moved and put anywhere, and that it is lighted, no matter where it is put and without being electrically connected to anything.
I have been able to produce such a condition by creating in the room a powerful, rapidly alternating electrostatic field. For this purpose I suspend a sheet of metal a distance from the ceiling on insulating cords and connect it to one terminal of the induction coil, the other terminal being preferably connected to the ground. Or else I suspend two sheets . . . each sheet being connected with one of the terminals of the coil, and their size being carefully determined. An exhausted tube may then be carried in the hand anywhere between the sheets or placed anywhere, even a certain distance beyond them; it remains always luminous.” – Nikola Tesla
Wireless electricity. Wouldn’t that be great? You could put a lamp anyplace in the room without having to plug it in the wall.
How about charging a cell phone just by placing it anywhere in a room. Another use for wireless electricity.
How about wireless electricity at public places? Starbucks, for example Suppose that just by being inside the Starbucks store you could charge your laptop, cell phone, tablet, or other device that you just happened to lay on a table or chair?
Nikola Tesla had the vision of this capability more than 100 years ago.
So a couple of recent women graduates (undergrads) from University of Pennsylvania came up with a proof of concept of how this could work and become a commercial product.
But, as you will see, these gals came up with a novel approach. While Tesla tried to do wireless electricity through the “direct route” these undergrads took sort of a detour making use of something that is hidden in plain sight to assist with the transmission. But, the end result is the same – delivering electricity over a distance without wires.
Take a look at the video showing the proof of concept of uBeam
Bonus – Schematic diagrams included. Build at your own risk!
Spending too much money on natural gas to heat your home? From General Electric Research 1934
Previous research at MIT
So what are those two-dimensional squares that look like art work? Some fan mail from some flounder?
They are QR (Quick Response) codes. One of these squares can embed a lot of information. In fact, you can encode about 4,000 alphanumeric characters in one of these squares. The information can be a URL, a business card, an e-mail address, or any text you want – even a resume. Imagine that, your curriculum vitae in a square on your business card. How about the next generation of tombstone markers? Suppose we etch the story of your life in stone as a QR code that anyone with a mobile device could read as they walked through the cemetery?
QR codes are very easy to generate using software for a PC. Just about anyone with a smart phone that has a camera and application capability can read the messages and information in these artistic squares. If the content of the message is well-formed, a smart device can take an action. For example, open a URL, create a business contact in an address book, send e-mail, or any other action of which the device is capable and can be linked to a directive in the message. Pretty cool. No license required to generate or use these codes.
Check out the video below of one New Yorker as she hunts down and reads QR codes posted in public places
The Wikipedia – http://en.wikipedia.org/wiki/QR_Code
Create your own QR codes of Text, URL, Contact info, SMS, or Business Card
QR codes trending in Google Searches
The advantages and disadvantages of QR codes