Cisco's new telepresence systems

Cisco announced and demonstrated a video conferencing solution (called telepresence) recently in India. This solution brings people together as if they are in same room. See these videos to feel the experience.







PS: There are poeple who say that Cisco now sells furniture also. Yes, they say that you need special type of furniture and Cisco sells it as a bundle along with telepresence. (I didnt read this from any trustable source).

Wireless Power Transmission

MIT wants to say good bye to wires!!

It seems to me that our sons or grandsons would see efficient wire-free transmission of electricity. I read couple of articles
related to this topic recently and got astonished after knowing what MIT has achieved few months ago.

MIT team experimentally demonstrated wireless power transfer, potentially useful for powering cell phones, gaming devices, hand held devices, PDAs, laptops without power cords. MIT researchers were able to light a 60W light bulb that is seven feet away; there was no physical connection! The MIT team have christened their technique, WiTricity.

The MIT design consists of two copper coils. One, attached to the power source, is the sending unit. It fills the space around it with a magnetic field oscillating at a particular frequency. The second copper coil is designed to resonate with that oscillating magnetic field. A copper coil within an oscillating magnetic field generates a current, enough, in MIT's case, to power a light bulb.

Do you think its safe to live in this type of magnetic field?