Futurists Prediction

Green energy is going to be in every single type of industry, all governments in industrialized countries are pushing for it. I was surprised and amazed what can be invented for green energy. The article I read from cnet.com talks about a new type of green energy prototype gadget built by RCA. It is a handheld energy converter, it catches WiFi signal and converts it to DC power. The device is called Airnergy, the device is very small and has an antenna that catches and collect the signal and stores it in an internal battery. OhGizmo reported from an RCA representative that they were able to charge a BlackBerry from 30 percent to full charge in about 90 minutes using the ambient Wi-Fi signal at CES2010. RCA is hoping that in the future this type of technology can be implemented for cell phone; the main goal is to eliminate batteries for cell phone and have this type of gadget replace it. However, a question can be asked here, is there enough energy emitted from a Wi-Fi transmitter to allow the capture of the signal and convert it to DC power? The amount of RF energy emitted is less than the Volts x Amps of the hotspot which is on the order of something less than 12 watts and a cell phone requires in general about 5 watts to charge. The amount of energy that the device being charged by the WiFi hotspot is directly proportional to the amount of RF signal intercepted by the device at whatever distance it is from the WiFi hotspot. 1/1000 is the area intercepted on the order of the amount transmitted when at a distance of 4 feet from the WiFi hotspot. I might be wrong, I am thinking from a mathematical point of vu, but it would be very cool if it can be used for home energy to monitor system that communicates and powers the sensors with WiFi. It’ll allow to measure flow sensors for water, air, temperature and gas.

Reference:
http://www.ohgizmo.com/2010/01/09/ces2010-rca-airnergy-charger-harvests-electricity-from-wifi/



Ref: http://ces.cnet.com/?categoryId=10406866&tag=rtcol

I found this video in youtube and I believe it allows us to think about the evolution of technology in the last 100 years and I wanted to share it will all of you.