Scientists generate electricity from shadows

In most approaches to convert light into electricity, shadows are a bummer. Now though, researchers from the National University of Singapore (NUS) devised a shadow-effect energy generator (SEG) that scavenges electricity from the contrast between light and shadow.

“When the whole SEG cell is under illumination or in shadow, the amount of electricity generated is very low or none at all. When a part of the SEG cell is illuminated, a significant electrical output is detected. We also found that the optimum surface area for electricity generation is when half of the SEG cell is illuminated and the other half in shadow, as this gives enough area for charge generation and collection respectively,” says MUS physicist Andrew Wee in an NUS News article.

From the researchers' technical paper in the journal Energy & Environmental Science:

Our SEG performs 200% better than that of commercial silicon solar cells under the effects of shadows. The harvested energy from our generator in the presence of shadows arising at a very low intensity (0.0025 sun) can drive an electronic watch (1.2 V). In addition, the SEG can serve as a self-powered sensor for monitoring moving objects by tracking the movement of shadows. With its cost-efficiency, simplicity and stability, our SEG offers a promising architecture to generate green energy from ambient conditions to power electronics, and as a part of a smart sensor systems, especially in buildings.

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Artist paints playful shadow art on sidewalks

Artist Damon Belanger's "Shadow Art" installations are making the rounds on the internet and for good reason, they're terrific! Using grey paint designed for concrete patios, he first created these street art pieces on commission back in 2016. They're a permanent installation, so you can still find all 22 of the fantastical shadows, ranging from anthropomorphic flowers to critters to abstract designs, on the downtown sidewalks of Redwood City, California.

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In use... #redwoodcity #visitredwoodcity #shadowart

A post shared by Damon Belanger (@dmn.belanger) on May 29, 2016 at 9:32pm PDT

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#redwoodcity #cityofredwoodcity #publicart #streetart #visitredwoodcity #rwcparks #redwoodcityshadowart #shadowart

A post shared by Damon Belanger (@dmn.belanger) on Jun 8, 2016 at 7:46pm PDT

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Dog the Cat. One of about twenty shadow art pieces I painted in downtown #redwoodcity. #rwcparks #visitrwc #redwoodcityshadowart #publicart #shadowart

A post shared by Damon Belanger (@dmn.belanger) on May 21, 2016 at 11:23pm PDT

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Robo Band. One of about twenty shadow art pieces I painted in downtown #redwoodcity. #rwcparks #visitrwc #redwoodcityshadowart #publicart #shadowart

A post shared by Damon Belanger (@dmn.belanger) on May 21, 2016 at 11:28pm PDT

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Hydrant @ El Camino. One of about twenty shadow art pieces I painted in downtown #redwoodcity. #rwcparks #visitrwc #redwoodcityshadowart #publicart #shadowart

A post shared by Damon Belanger (@dmn.belanger) on May 21, 2016 at 11:33pm PDT

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Parking Monkey. One of about twenty shadow art pieces I painted in downtown #redwoodcity.

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Watch this film of magical hand shadows from 1933

"Just a pair of hands -- and a whole lot of clever imagination."

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Freaky! Street sign casts shadow of hanging man

These photos were taken at a crossing in South Devon. The junction is locally known as "Dead Man's Cross" and is reportedly the former site of a gallows. Creeeeeeeepy!

A fellow named George Johnston noticed the curious shadow and posted his photo of it on social media where it garnered plenty of attention.

"Some people thought it was fake but a couple of others have gone down there themselves to check and posted similar pictures," Johnston told the Plymouth Herald. "Why would I spend my time Photoshopping a shadow? I have a life."

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Little girl scared of her own shadow

This toddler is having a nice time in a parking lot when she is startled by a stranger who silently sneaked up to her. She panics and flees, but like the monster in It Follows, the stranger pursues her relentlessly.

[via]

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Boy unable to escape own shadow

"She returned to the nursery, and found Nana with something in her mouth, which proved to be the boy's shadow. As he leapt at the window Nana had closed it quickly, too late to catch him, but his shadow had not had time to get out; slam went the window and snapped it off. You may be sure Mrs. Darling examined the shadow carefully, but it was quite the ordinary kind."

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Silhouettes in vintage snapshots

House of Mirth asked collectors of vernacular photos/snapshots to share their favorite specimens in the "silhouette" category. The subject of Joel Rotenberg's contribution above left reminds me of William S. Burroughs! Snapshot above right is from the collection of Nigel Maister. "Silhouettes in Photographs" Read the rest

Excellent shadow theater performance

Yes, it's from "Britain's Got Talent," but Attraction's shadow theater performance is fantastic.