Visible improvement

With regard to your item on the Sydney researchers who claim to be able to make objects disappear, there might be a case for prior art [evidence invalidating a patent] for the ‘superlens’ material.

With regard to your item on the Sydney researchers who claim to be able to make objects disappear (Good Week/Bad Week, 22 May), there might be a case for prior art [evidence invalidating a patent] for the ‘superlens’ material.


If I hold a blanket in front of, and close to, my motorbike, it effectively ‘erases the light reflected off’ the bike, rendering it invisible. If we can just make the blanket invisible, this technique could also have ‘huge potential in military stealth applications’!


Andy Hawkes
Air Tube Conveyors




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How to enter
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Flexible and competitive
bmi asked 10,000 customers ‘what would make a great airline?’



The answer was clear: competitive fares, more choice and less time wasted at airports. So bmi acted, introducing a unique fare structure on domestic and European short-haul flights to and from London Heathrow. Thanks to three fare options — including premium economy, with benefits including lounge access and flexibility — you choose the services you want, depending on your business trip.



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The prize
Try the smart approach for yourself, courtesy of bmi. The winner of The Engineer’s Letter of the Month prize for April, as selected by the editor, will win a pair of tickets from London Heathrow to any destination on bmi’s European mainline network.



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The Engineer

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London
W1F 7AX