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By Bill Christensen
Physicists have created a laser weapon that targets mosquitoes.
It is hoped that by finding an effective weapon against
mosquitoes, the incidence of malaria could be reduced.
Today, malaria kills about one million people every year around
the world.
"We'd be delighted if we
destabilize the human-mosquito balance of power," says Jordin Kare,
an astrophysicist who once worked at the Lawrence Livermore National
Laboratory, the birthplace of some of the deadliest weapons known to man.
More recently he worked on the mosquito laser, built from parts
bought on eBay.
According to a recent article in the Wall Street Journal, the
device is the brainchild of Lowell Wood, an astrophysicist who worked with
Edward Teller, father of the hydrogen bomb.
Teller was also the architect of the original plan to use lasers
to shield America from the rain of Soviet nuclear arms. This plan became known
as the "Star Wars" project.
Dr. Wood suggested that the laser shield idea could be used to
zap mosquitoes.
"Demonstrating the technology recently, Dr. Kare, Mr.
Myhrvold and other researchers stood below a small shelf mounted on the wall
about 10 feet off the ground.
On the shelf were five Maglite flashlights, a zoom lens from a
35mm camera, and the laser itself -- a little black box with an assortment of
small lenses and mirrors.
On the floor below sat a Dell personal computer that is the
laser's brain."
Across the room, the glass box of mosquitoes is ready. The
computer signals each "hit" with a gunshot sound.
Here's how it works: first, to locate individual mosquitoes, the
flashlights shine into the tank from across the room.
Each mosquito creates its own silhouette on reflective material
behind it. The zoom lens picks up the shadows and feeds the data to the
computer, which controls the laser and fires it at the bug.
Even better, the laser target only female mosquitoes; it uses
the rate at which the wings beat to differentiate male from female.
This is a very cool idea, but I'd hesitate to credit it to Dr.
Wood. Instead, consider science fiction author David Brin, who wrote about a laser-based bee zapper in his 1990 book Earth.
Bill
Christensen
catalogues the inventions, technology and ideas of science fiction writers at
his website, Technovelgy. He is a contributor to Live Science.
https://www.livescience.com/3403-star-wars-laser-kills-mosquitoes.html
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