A $12 power meter helped me test which electronics in my home were the biggest energy vampires. The result caught me off ...

The power-gurus at WiredBike.com review Quarq’s Cinqo power meter – and are impressed by it’s ease of setup, use and even the price… this could be the powermeter you’ve been waiting for. The history ...

If your goal is to save on electricity, you must first measure the ac current flowing through your appliances. The formula for power is the product of the ac line voltage and the measured current.

The iPhone democratized photography and disrupted the video and camera industry. Now a new product that plugs into the iPhone’s Lightning port aims to replace an important photographer’s tool — the ...