You can do a set of damage with a direct beam of microwave department of energy. It can destroy electronics by inducing gamey voltages in chips and wires ( just as metallic objects spark if left in a microwave oven ). Such a shine could besides burn a person ’ randomness clamber, or even detonate improvise explosive devices by exciting unstable chemicals .
A megawatt magnetron is normally needed to make the beam, though, and these are large and expensive beasts that need body of water cool .
however, two inventors from Albuquerque, New Mexico in the US, reckon there is cheaper way to get the power. Simply gather together a stack of magnetrons ripped out of consumer microwave ovens, and lock their output together so that they combine into one coherent glow. What is more, they say, the magic trick can be done mechanically .
Microwave magnetrons come with a tubular component that controls the output signal. The theme is to arrange a twelve or so side by side and have a small metallic plate in front that reflects some of the department of energy from each tube back into the mouth of adjacent ones. This should make all the magnetrons resonate in synchronization, the inventors reckon. Three hundred consumer devices, rated at 1 kilowatt each, could combine to generate megawatt pulses from the back of a mobile generator.
Reading: Invention: Microwave-oven gun
The merely puzzle is why the u government Patent Office has published an application that might explain to anyone, including terrorists, how to build such a weapon .
Read the entire microwave oven gunman patent application .
Apple’s finger sensor
Researchers at Apple ’ s headquarters in California, US, have been working on a new way to make iPods, PDAs, cameras and other gadgets save ability while besides looking aplomb. Their drawn-out apparent application reveals how to make a screen light up and activate its touch-sensitive controls only when a finger comes close. The screen door has a built-in capacitive detector and when a finger comes to within about 10 millimetres, the electric capacitor changes and trips a finely tuned circumference. The device then wakes from sleep mode, lights up its blind and displays a menu of touch medium controls. When the finger moves away again, the sieve stays on for a preset period of time, after which it shuts devour again to conserve world power.
Read more: Why Did My Microwave Catch Fire?
And, because the detector relies on a capacitive effect, the device can sit happily inside a scoop without being unintentionally activated or waking up when its affect medium keys are brushed or pressed. It will only come back to life only when the owner ’ mho feel, or hand, gets close .
Read the full Apple proximity detector apparent application .
military aircraft keep their fuel tanks topped up with arrant nitrogen to prevent fire. But these systems have to pump accelerator at gamey speeds to keep pace with the rapid pressure changes that occur with climbs and dives. The hardware needed has always been excessively bulky, expensive and power-hungry for commercial airliners – even though they are nowadays at increased risk of onboard displace from a terrorist fail or rocket attack .
Inventor Philip Jones from Florida, US, claims to have come up with a compendious, depleted monetary value alternative that simply siphons off nitrogen from lay waste to air out draw from an aircraft ’ sulfur engines .
Hot air travel is inaugural bled off from a turbine and partially cooled by a heat exchanger that uses cold tune from outside. The now-warm air travel is then passed through a carbon trickle that gets rid of any hydrocarbons before being fed into a tangle of extremist reduce polymer fibres that let oxygen and nitrogen in the ardent air out die through at different rates .
The oxygen is vented off, leaving nitrogen-rich vent which can be fed into the cargo bays and fuel tanks to quench fires before they can take hold. The turbine air travel, the inventors say, is already oxygen-depleted, under pressure and hot – all of which helps legal separation in the tangled-fibre filter .
Since airliners climb and descend slowly, causing only gradual imperativeness changes in the tanks, the relatively slow-acting nitrogen system should work without any indigence for a complex pump system.
Read more: Baked Potato In The Microwave
Read the full aircraft fire-quenching patent application .
For more than 30 years, Barry Fox has trawled through the world’s weird and wonderful patent applications, uncovering the most exciting, bizarre or even terrifying new ideas. Read previous Invention columns, including&colon
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