A Twinkling Christmas Tree, Powered by…an Electric Eel?
If you were to walk into the Living Planet Aquarium today in Sandy, Utah, and meander through the “Journey to South America” gallery–past 10-foot anacondas, piranha and caiman alligators–you’d meet Sparky. The nearly four-foot-long electric eel draws a crowd, particularly in December, when it causes the lights on a nearby Christmas tree to twinkle.
That’s right: twinkle.
Electric eels have to navigate the dark, murky streams and ponds where they live in South America. (Or, in Sparky’s case, his large tank.) The slender, snake-like fish have tiny eyes that are not very effective in low-light conditions. So, to wayfind, electric eels, true to their name, rely on their electric organs. These organs contain about 6,000 cells, called electrocytes, that stow power much like batteries do. Eels emit that power through low- and high-voltage charges when circumstances call for it.
“They will use their electricity similar to how a dolphin would use sonar or a bat would use radar,” says Andy Allison, curator of animals at the Living Planet Aquarium, a facility about 20 miles south of Salt Lake City. “He [Sparky] will put out little shocks whenever he is moving, real low-voltage type things, just enough so that it can help sense his environment.” For its Christmas display, the aquarium takes advantage of the little pulses of electricity that Sparky sends out as he swims. “Also, when he is hungry or senses food in the area, or angry, he will send out a big shock to stun prey or to stun a predator,” says Allison. These large shocks can measure up to 600 volts.
So how does the twinkling Christmas tree work?
About three years ago, Bill Carnell, an electrician with Cache Valley Electric, in Salt Lake City, found a really interesting video on YouTube produced by the Moody Institute of Science in the 1950s. In it, a scientist demonstrates how an electric eel can power a panel of light bulbs. Inspired, he began experimenting with Sparky. Carnell connected a standard 120-volt light bulb to electrodes, which he dunked into Sparky’s tank. The light bulb did not turn on. He tried a string of Christmas lights. Again, no results. So, he tried a strand of specialized, very low-voltage lights, and he finally got some flickering.
Carnell and his colleagues installed two stainless steel electrodes, one on each side of Sparky’s tank. These electrodes collect the voltage the electric eel emits to then power a sequencer. “The sequencer takes the voltage the eel produces and operates circuitry that flashes the lights, fast or slow, based on the level of voltage he puts out,” says Terry Smith, project manager at Cache Valley Electric, in a press release.
The five-foot-tall tree, which stands just next to Sparky’s tank, is decorated with four strands of lights. While the eel does not power the lights, he does control the way the strands flicker. “As he shocks, one strand shuts off and another strand turns on,” says Allison.
Of course, when Sparky is calm and resting on the bottom of his tank, the lights on the nearby tree are pretty constant. “But when it is moving, it is boom, boom, bo-boom, boom, boom,” says Allison. Electric eels are capable of multiple shocks a second.
Read the full article at: smithsonianmag.com
Latest News from our Front Page
Sweden may be at war "in a few years" - top brass in leaked document
In a few years Sweden may be engaged in a war with a “qualified opponent” after two centuries of peace, a senior Swedish commander has told soldiers in an internal brochure.
The alarming message was reportedly sent by Major General Anders Brännström, the Army chief, in a brochure distributed among the participants of a major annual event that is to open ...
Danish imam urges govt to accept child marriages among refugees
A high-profile imam has urged the Danish government to accept child brides, as the practice is part of the culture of many refugees arriving in the country. It follows an announcement by Denmark that such couples will be separated under Danish law.
Imam Oussama El-Saadi, of the Aarhus mosque in Denmark, said that child brides should be looked at from a ...
White Parents in Virginia Shutdown White Guilt Video!
You see folks? This is what happens when you stop blaming the Joo, and you get the fuck off your favorite bitch corner and start taking action! This is what happens when parents start parenting again! What? You’re gonna brainwash our kids with your filth and lies? We don’t think so. How would you like an empty school with no ...
Hungarian Top Economist: Civil War is Coming to Europe
Zsolt Bayer, Hungarian journalist, publicist, and co-founder of Hungary's currently ruling political party, and Dr. László Bogár, former politician and leading economist, discuss the Cologne sexual assualts committed by migrants on New Year's Eve, 2016.
This short part of the 60-minute long television program that aired on Echo TV on January 8, 2016, is of a rant by Mr. Bogár warning ...
British scientists granted permission to genetically modify human embryos
The Francis Crick institute will genetically edit the leftover embryos from from IVF clinics
British scientists have been granted permission to genetically modify human embryos by the fertility regulator.
The scientists want to deactivate genes in leftover embryos from IVF clinics to see if it hinders development.
It will only be the second time in the world that such a procedure has ...
|More News » |