Who Said Old TVs Were Useless? Analogue Televisions
Can Be Transformed Into Solar-Powered DEATH RAYS That Will Burn
Anything in Its Path at 2,000F
A back garden
inventor has published details on how an old-style big screen television
can be converted into a solar-powered death ray that burns at 2,000F.
the self-styled King
of Random, has made two YouTube videos which show how the screens
of old rear-projection TVs can be used to condense sunlight into
point capable of melting coins.
films show him using such a screen mounted on to a wooden frame
to burns holes through concrete, boil water in seconds and incinerate
planks of wood.
Solar powered death ray: This image shows how coins can easily be
melted with a lens harvested from an old television and used to
focus the Sun's rays
Hot: The beam of concentrated solar power is so strong it can not
only boil water in seconds but also burn its way through the glass
bottle in which the liquid is contained
scoured the 'free' section of local classified ads to find an old
rear-projection television with the right kind of screen to hack
out for his project.
Prior to the
roll out of large LED and plasma displays, cathode ray tube rear-projection
TVs were the first to exceed 40in screen size.
They used three
CRTs one red, one green and one blue aligned so the colours
mix correctly on to a screen incorporating a Fresnel lens the
same type of lens used in lighthouses.
once commanded retail prices of many thousands of pounds, such ageing
television sets are now easy to get hold of because they cost more
to fix than they can be sold for.
Hack job: Grant Thompson harvested the lens from an old-style rear-projection
... and mounted it in this homemade frame
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