Pop music makes solar cells produce more electricity
By James Urquhart | NewScientist
They really are picking up Good Vibrations. Some solar cells convert sunlight into electricity more efficiently when loud music is played to them – as long as it is pop rather than classical.
Traditional silicon-based solar cells convert sunlight into electricity efficiently, but they can be awkward to work with and expensive to produce. So Steve Dunn at Queen Mary University in London and James Durrant at Imperial College London have been experimenting with zinc oxide, which is much cheaper and can be made into thin, flexible films. The only drawback is that its efficiency is just 1.2 per cent, a small fraction of what silicon is capable of.
To improve this, Dunn and Durrant took advantage of another of zinc oxide’s properties. Nanoscale rods of the material wobble in response to mechanical stress – such as the vibrations produced by sound – and generate an electric field.
"We tried our initial tests with various types of music, including pop, rock and classical," says Dunn. Rock and pop were the most effective, perhaps because they have a wider range of frequencies. Using a signal generator to produce precisely measured sounds similar to ambient noise they saw a 50 per cent increase in efficiency, rising from 1.2 per cent without sound to 1.8 per cent with sound (Advanced Materials, DOI: 10.1002/adma.201303304).
The discovery could lead to the development of zinc-oxide solar arrays that can be deployed in noisy public places – next to busy roads, for example.
Read the full article at: newscientist.com
Listening to Mozart doubles survival rates after a heart transplant. Enya? No effect.
Archaeoacoustics: The Sound of Ancient Megalithic Structures
Our Ancestors, the Acoustical Engineers
Sound waves levitate and mix floating drops of liquid
Neuroscientists prove ultrasound can be tweaked to stimulate different sensations
Sonic Art – German Audio-Visual Artist Makes Pictures from Sound Waves
Resonance - Beings of Frequency
World’s Loneliest Whale Sings At The Wrong Frequency
Ancient Maya Temples Were Giant Loudspeakers?
Latest News from our Front Page
Virginia TV Shooter Said, "Jehovah Spoke To Me That I Should Take Action"
What causes a guy to go off the plantation enough so that he would murder in cold blood, two of his former colleagues? Guesses are abounding, such as racial tension, mental illness, psychotropic prescription drugs, narcissism, etc. What about the angle of how a destructive religious cult shaped him in his formative years, so that later in life, he would ...
Invasion into Macedonia from Greece - Border Mayhem
Description from video page: These are the desperate scenes at Greeceâ€™s border with FYR Macedonia as overwhelmed security forces made sporadic attempts to stem the flow of invaders heading northwards.
Riot police set off stun grenades and hit invaders with batons but that did little to stop them passing into FYR Macedonia.
Skopje had declared a state of emergency on Thursday (August ...
RamZPaul: TV Reporter Murdered Live On Air
Youtube description: The gunman responsible for the live on air shooting of reporter Alison Parker and cameraman Adam Ward said part of his motivation for the attack was Parker making “racist comments.”
Vid that killer made:
(note the actual shooting vid is being censored fast)
Jesse Benn advocating "White Wounding: just weeks ago:huffingtonpost.com
White House Pushes Race War, Then Blames Guns For Flanagan's "Race War"
"You want a race war (expletive)?" Asked shooter
The Obama administration is blaming guns for the WBDJ-TV shooting, even though the shooter, Vester Flanagan, was influenced by the White House’s race baiting.
The White House has been falsely insinuating that racism is the dominant factor behind numerous events over the past several years, even those that didn’t involve race at all, and ...
How Google Destroyed the Internet
The internet was created to resolve a simple problem: in communications networks, any central node through which all messages passed was vulnerable to attack or takeover. To counter this, engineers designed a network where any node would pass messages to other nodes, routing around any damage.
Then came commerce and the democratization of the internet.
Under this model, frightened sheep flock to ...
|More News » |