december sigma japan recall sd battery case dec , at : sigma japan has posted a recall notice for the 'battery case' (the cartridge which slides into the base of the camera) for cameras with a serial number between and . this is to correct a fault where the amount of remaining power is incorrectly reported...
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induction lamp metal halide lamp commercial lighting office lighting led tube fluorescent light spotlight panel light energy saving lamp@ led light@ store & shop lighting led sign led bulb cabinet light light box led letter led writing board sensor light halogen light downlight@ hotel lighting underwater...
induction lamp metal halide lamp commercial lighting office lighting led tube fluorescent light spotlight panel light energy saving lamp@ led light@ store & shop lighting led sign led bulb cabinet light light box led letter led writing board sensor light halogen light downlight@ hotel lighting underwater...
that about % of the electrical energy is converted to light, while a ca. % is lost and converted into other forms of energy such as heat. with traditional incandescent light bulbs who operate at % energy efficiency only, a % of the electricity is lost as heat. imagine the following scenario: if you use...
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to spy on communities san francisco—the electronic frontier foundation (eff), in partnership with the reynolds school of journalism at the university of nevada, reno, today launched the largest-ever collection of searchable data on police use of surveillance technologies, created as a tool for the public...
tablets smartwatches speakers drones accessories buying guides how-to's deals more from verge reviews science video space nasa spacex health energy environment all science creators youtube instagram adobe kickstarter tumblr art club cameras photography what's in your bag?...