Free Energy or Toy

Electricity is one of the most useful discoveries of our relatively recent history. It lights the rooms we hang out in, give power to some vehicles and allows for communication across vast distances. In 1800, Italian physicist Alessandro Volta discovered that particular chemical reactions could produce electricity so he constructed the voltaic pile (an early electric battery) that produced a steady electric current.

energy

Since then, electricity has been adapted to try to fit the needs of people better. In 1891, inventor Nikola Tesla wanted to make a way to transmit electricity without the use of wires, so that more people could have access to a cities source. He created the Tesla coil, a resonant transformer circuit to try to do just that.

However, with this new technology came challenges. It turns out that spraying electricity into the air is a waste. Whether the power would be used or not, it’ll eventually dissipate. It is also quite dangerous without the use of proper equipment. The large arcs of electricity that you see are about 650,000 volts! For comparison, the electricity that comes out of your wall is at about 120 volts, which is dangerous in it’s own right.

energy zoom

Today, Tesla coils are not used for free energy, or really anything useful. However, they are used far and wide in classrooms as scientific demonstrations! They are also, really fun to play with, as long as you do so safely. Faraday cages or grounding rods should always be used, and can even be used to control the flow of the electric discharge!

Written By: Mimi Garai

WELCOME TO OUR ASTROCAMP BLOG

We would like to thank you for visiting our blog. AstroCamp is a hands-on physical science program with an emphasis on astronomy and space exploration. Our classes and activities are designed to inspire students toward future success in their academic and personal pursuits. This blog is intended to provide you with up-to-date news and information about our camp programs, as well as current science and astronomical happenings. This blog has been created by our staff who have at least a Bachelors Degree in Physics or Astronomy, however it is not uncommon for them to have a Masters Degree or PhD. We encourage you to also follow us on Facebook, Instagram, Google+, Twitter, and Vine to see even more of our interesting science, space and astronomy information. Feel free to leave comments, questions, or share our blog with others. Please visit www.astrocampschool.org for additional information. Happy Reading!

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