spinningmagnets
100 TW
One problem with power transmission through the air (as opposed to signal transmission such as radio or TV) is that lab rats have developed tumors when they live in an electromagnetic field, such as is found near power transmission towers. There are currently lawsuits being reviewed about residents who live near the towers and have a higher than normal incidence of rare cancers.
When radar speed guns first came out, they were bulkier than now and some were mounted inside the cab on the ceiling between the front seats. The instructions stated to turn on the device and then pull the trigger, but officers just left it on all the time. Then several officers got an extremely rare form of eye tumor on the side next to the radar gun. Officers who rode motorcycles often put the radar gun between their thighs while waiting for a speeder to pass, and several got testicular cancer.
The EV-1 electric car used an induction charger paddle that was encased in plastic and was advertised as being able to charge in the rain when slipped into the cars socket. An electromagnetic coil in the paddle pulsed, and when it was near another coil, it "induced" current to flow in the second coil with no phyhsical connection. No doubt a credit card placed within a foot of the charger paddle would be erased.
I was fascinated by the clever mechanical/electrical inducement of animal identification chips. It is the size and shape of a grain of rice, its encased in sterile glass, and is inserted just under the skin between a dogs/cats shoulder blades. There is a micro-device inside that vibrates in the presence of an electromagnetic field. The vibrating part has a very tiny permanent magnet attached that occilates next to a coil, which induces current (its a linear alternator) a multi-digit number is stored in a medium that cant be erased or changed. The power is used to transmit that number by radio frequency, but the power is so weak, the reader must be within several inches to catch it.
Watch this one minute demo of this "anti-raccoon" doggie door that senses the RFID chip from several inches away (actual chip shown).
http://www.geekalerts.com/sureflap-microchip-cat-flap/
So, technically, there are several options for very short range power transmission (or inducement) like the WiFi signal that allows me to use my laptop without a signal cable (battery life allowing). My Daughter has one of the new iPhone inducement chargers. Just set the phone on the pad, and the battery charges without having to plug in a socket to the phone/charger. Imagine a laptop power pad that is embedded inside a table top or the left arm of your favorite padded Lay-z-boy chair. (with EMF-shielded underwear?).
But, for an electric car to get power from air-transmission...for all we know, Tesla's increasingly bizarre behaviour near the end of his life was caused by brain tumors resulting from his power transmission experiments.
When radar speed guns first came out, they were bulkier than now and some were mounted inside the cab on the ceiling between the front seats. The instructions stated to turn on the device and then pull the trigger, but officers just left it on all the time. Then several officers got an extremely rare form of eye tumor on the side next to the radar gun. Officers who rode motorcycles often put the radar gun between their thighs while waiting for a speeder to pass, and several got testicular cancer.
The EV-1 electric car used an induction charger paddle that was encased in plastic and was advertised as being able to charge in the rain when slipped into the cars socket. An electromagnetic coil in the paddle pulsed, and when it was near another coil, it "induced" current to flow in the second coil with no phyhsical connection. No doubt a credit card placed within a foot of the charger paddle would be erased.
I was fascinated by the clever mechanical/electrical inducement of animal identification chips. It is the size and shape of a grain of rice, its encased in sterile glass, and is inserted just under the skin between a dogs/cats shoulder blades. There is a micro-device inside that vibrates in the presence of an electromagnetic field. The vibrating part has a very tiny permanent magnet attached that occilates next to a coil, which induces current (its a linear alternator) a multi-digit number is stored in a medium that cant be erased or changed. The power is used to transmit that number by radio frequency, but the power is so weak, the reader must be within several inches to catch it.
Watch this one minute demo of this "anti-raccoon" doggie door that senses the RFID chip from several inches away (actual chip shown).
http://www.geekalerts.com/sureflap-microchip-cat-flap/
So, technically, there are several options for very short range power transmission (or inducement) like the WiFi signal that allows me to use my laptop without a signal cable (battery life allowing). My Daughter has one of the new iPhone inducement chargers. Just set the phone on the pad, and the battery charges without having to plug in a socket to the phone/charger. Imagine a laptop power pad that is embedded inside a table top or the left arm of your favorite padded Lay-z-boy chair. (with EMF-shielded underwear?).
But, for an electric car to get power from air-transmission...for all we know, Tesla's increasingly bizarre behaviour near the end of his life was caused by brain tumors resulting from his power transmission experiments.
