electricity

This Temporary Tattoo Is Actually A Battery That's Powered By Your Sweat

What if the sweat produced by your body could power your gadgets? And what if the connection between the two could be made by a temporary tattoo, the more you sweat, the more power the tattoo generates? That’s exactly what researchers at UC San Diego have developed — and one day, it could power your wearables.


Simply Layering Solar Cells Could Make Them As Cheap As Natural Gas

It’s not uncommon to focus on excotic solutions to making solar power more efficient: new materials, complex tracking systems or unusual physical phenomena. But what about just stacking them on top of each other?


This Giant Searchlight Once Scanned Los Angeles From The Mountains Above

As twilight faded over Pasadena on September 9, 1894, an artificial sun flickered to life for the first time. High above town in the San Gabriel Mountains stood a wonder of the new electric age: a 60-inch General Electric searchlight, by many accounts the largest in the world. This massive projector first dazzled audiences at the 1893 Chicago World’s Fair. Now it would perform its nightly spectacle in the mountains above Los Angeles.


Smart Grids Could Save Australians $28 Billion In Electricity Costs

A $500 million, four year smart electricity grid pilot project in Sydney and Newcastle CBDs has paid off, with the final analysis showing that smart grid monitoring and control could save Australian consumers a total of $28 billion over 20 years. A national smart grid would enable a gamut of services like real-time consumption monitoring that could help Australians lower their energy bills.


Electricity-Eating Bacteria Are Real And More Common Than We Thought

In the extreme world of bacteria, stunts such as living in hot springs or without oxygen are, like, totally unimpressive. But then there are bacteria that live off electricity, feeding directly on naked electrons. Even more surprisingly, scientists are finding that these bacteria are not even that rare.


This Machine Generates Electricity From Humidity

This silver cube looks like it belongs on a spaceship — but actually it’s way more exciting than that. In fact, it can create electricity from humidity, as water condenses on its internal surfaces.


Your Set-Top Box Is Wasting Absurd Amounts Of Energy And Money

Electricity bill got you down? Blame your cable box or PlayStation or printer or refrigerator or any of your smart, networked devices that have a gentle-sounding but energy-sucking “standby mode”. A new report from the International Energy Agency puts the energy from networked devices worldwide at 616 terawatt-hours. That’s more than the entire energy consumption of the United Kingdom.


Scientists Swapped A Toxic Chemical In Solar Cells For A Tofu Ingredient

Thin-film solar cells promise to bring flexible, low-profile solar power to all kinds of surfaces. Unfortunately, constructing thin-film panels requires cadmium chloride, a finicky, expensive and toxic material. Now, University of Liverpool scientists have figured out how to make solar cells using magnesium chloride, a compound so innocuous, it’s actually used in the production of tofu.


Wind Power In South Australia, And No Angry People

Almost 150 wind turbines are built or nearing completion around Snowtown in the north of South Australia. It’s the state’s biggest wind farm, and the towers dotting the landscape stretch 30 kilometres — but homeowners and residents are apparently happy with developer Trustpower’s clean energy project.


We Still Don't Know How Static Electricity Works

At some point in physics class, your teacher probably rubbed a balloon against his hair and explained static electricity. But what your teacher didn’t tell you — the full story about static electricity — is that scientists are just now realising it is a lot more complicated than thought.


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