1. Witricity Devon Greco

2. What is Witricity? Electricity without wires Magnetic loop antennas Electromagnetic near-field

3. History of Witricity Originally demonstrated in 1964 on CBS using model helicopter 1969-1975 30 kW over 1 mile at 84% efficiency

4. How does Witricity Work? Near-field inductive coupling through magnetic fields Interact weakly with surrounding objects (biological tissue)

5. Witricity Today MIT powered 60 watt light bulb from 2 meters (7 ft) at 40% efficiency MIT researchers working on improving the technology

6. Witricity Tomorrow 1) Power from mains to antenna, which is made of copper 2) Resonates 10MHz (electromagnetic waves) 3) Tunnel up to 2m (6.5ft) 4) Electricity received by antenna, also resonating at 10MHz. 5) Energy not transferred to laptop re-absorbed by source antenna. People/other objects not affected as not resonating at 10MHz

7. Witricity Concerns Will it harm me? Will it harm the environment? Will it interfere with important communication?