NewEnergyNews: WIRELESS ENERGY?/

NewEnergyNews

Gleanings from the web and the world, condensed for convenience, illustrated for enlightenment, arranged for impact...

The challenge now: To make every day Earth Day.

YESTERDAY

THINGS-TO-THINK-ABOUT WEDNESDAY, August 23:

  • TTTA Wednesday-ORIGINAL REPORTING: The IRA And The New Energy Boom
  • TTTA Wednesday-ORIGINAL REPORTING: The IRA And the EV Revolution
  • THE DAY BEFORE

  • Weekend Video: Coming Ocean Current Collapse Could Up Climate Crisis
  • Weekend Video: Impacts Of The Atlantic Meridional Overturning Current Collapse
  • Weekend Video: More Facts On The AMOC
  • THE DAY BEFORE THE DAY BEFORE

    WEEKEND VIDEOS, July 15-16:

  • Weekend Video: The Truth About China And The Climate Crisis
  • Weekend Video: Florida Insurance At The Climate Crisis Storm’s Eye
  • Weekend Video: The 9-1-1 On Rooftop Solar
  • THE DAY BEFORE THAT

    WEEKEND VIDEOS, July 8-9:

  • Weekend Video: Bill Nye Science Guy On The Climate Crisis
  • Weekend Video: The Changes Causing The Crisis
  • Weekend Video: A “Massive Global Solar Boom” Now
  • THE LAST DAY UP HERE

    WEEKEND VIDEOS, July 1-2:

  • The Global New Energy Boom Accelerates
  • Ukraine Faces The Climate Crisis While Fighting To Survive
  • Texas Heat And Politics Of Denial
  • --------------------------

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    Founding Editor Herman K. Trabish

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    WEEKEND VIDEOS, June 17-18

  • Fixing The Power System
  • The Energy Storage Solution
  • New Energy Equity With Community Solar
  • Weekend Video: The Way Wind Can Help Win Wars
  • Weekend Video: New Support For Hydropower
  • Some details about NewEnergyNews and the man behind the curtain: Herman K. Trabish, Agua Dulce, CA., Doctor with my hands, Writer with my head, Student of New Energy and Human Experience with my heart

    email: herman@NewEnergyNews.net

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    Pay a visit to the HARRY BOYKOFF page at Basketball Reference, sponsored by NewEnergyNews and Oil In Their Blood.

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  • WEEKEND VIDEOS, August 24-26:
  • Happy One-Year Birthday, Inflation Reduction Act
  • The Virtual Power Plant Boom, Part 1
  • The Virtual Power Plant Boom, Part 2

    Friday, June 08, 2007

    WIRELESS ENERGY?

    Now they’ve got to start working on a wireless nationwide grid.

    Wireless energy promise powers up; A clean-cut vision of a future freed from the rat's nest of cables needed to power today's electronic gadgets has come one step closer to reality
    Jonathan Fildes, June 7, 2007 (BBC News)
    click to enlarge
    WHO
    Massachusetts Institute of Technology (MIT) research team (Assistant Professor Marin Soljacic, Andre Kurs, Aristeidis Karalis, Robert Moffatt, John Joannopoulos and Peter Fisher); Professor Sir John Pendry, Imperial College London

    WHAT
    Researchers have successfully transmitted electricity wirelessly from a power supply to a 60 watt bulb 2 meters (7 feet) away. They call this WiTricity.

    WHEN
    Outlined 2006, proven 2007.

    WHERE
    Research published in the journal Science.

    WHY
    - The experiment: a transmitter w/60 cm (2 ft) diameter copper coils sent power 2 meters (7 feet) to an unconnected receiver which lit a 60 watt bulb attached to it with 40% efficiency. Wood, metal and electronic obstructions did not stop the bulb’s glow.

    - The key to WiTricity is very low frequency electromagnetic wave “resonance” between the transmitter and receiver, which allows energy transfer via harmonious vibrations. The copper coils resonate at 10Mhz and "tails" of energy to flow between them. Low frequency electromagnetic waves 30m (100ft) long keep the field magnetic rather than electric and thereby prevents harm to humans crossing it. A “far field” (of 2 GHz such as a mobile phone) produce an electric field which is what powers a microwave.
    - Physicist/engineer Nikola Tesla attempted a 29m wireless transfer at Wardenclyffe Tower in New York but failed. Others have worked with lasers, which require an uninterrupted interval.
    click to enlarge
    QUOTES
    - Pendry: "There is nothing in this that would have prevented them inventing this 10 or even 20 years ago…But…In the last few years we have seen an exponential growth of mobile devices that need power. The power cable is the last wire to be cut in a wireless connection."
    - Soljacic: "We had a strong faith in our theory but experiments are the ultimate test… These results are encouraging. The numbers are not far from where you would want for this to be useful…"
    - Pendry: "The body really responds strongly to electric fields, which is why you can cook a chicken in a microwave…But it doesn't respond to magnetic fields. As far as we know the body has almost zero response to magnetic fields in terms of the amount of power it absorbs."
    - Soljacic: "This was a rudimentary system that proves energy transfer is possible. You wouldn't use it to power your laptop. The goal now is to shrink the size…go over larger distances and improve the efficiencies…"

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