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The Mercedes-Benz 'Cloaking Device'
cold fjord writes "As part of its marketing campaign for the new hydrogen fuel cell powered F-Cell, Mercedes-Benz has equipped one with a cloaking device. They covered one side of an F-Cell with LEDs and used cameras on the other side to capture the view, which is then displayed on the LEDs to effectively remove the vehicle from the line of sight."
I don't think it is quite that simple. Hydrogen moves the pollution from many mobile sources, cars, to a very small number of non-mobile sources, power generation stations.
You know what also does that? Electric cars. And without the extra, extremely inefficient electrolysis step.
Electric: Dinosaurs -> Electricity -> Vroom
Fuel Cell: Dinosaurs -> Electricity -> Hydrogen -> Vroom
Not to mention that either you need to solve for long-term storage and transportation of hydrogen (if you produce it centrally) or produce it in-situ, and lose out on a good chunk of the efficiencies of centralisation you hope to gain.
Fuel cells (and the "hydrogen economy" in general) are bunk
Just because you're paranoid doesn't mean there isn't an invisible demon about to eat your face
1) Attach one tablet to your stomach and one to your back.
2) Open up a camera chat between them.
3) Put on a T-shirt with one bloody hole on the front, and one on the back, directly over the tablets.
4) It looks like someone shot a hole through you!
5) No profit, but plenty of laughs.
Schroedinger's Brexit: The UK is both in and out of the EU at the same time!
russians are testing a thermal camouflage for tanks. it uses infrared cameras to measure the temperature of objects (ground, buildings, trees, etc) surrounding the tanks, then send a command to thermal plates all around the the vehicle to match the measurements. this effectively makes the tank invisible to infrared devices, including night vision goggles.
imagine an american soldier, after being blasted by that tank saying as he dies: "the goggles, they do nothing!"
What ? Me, worry ?