By: Lindsay Grahaem
Testing which solid and liquids are the best conductors of electrical current is easy, and with a little preperation this science experiment can even be done at home. Conductors are materials which electricity can travel through, whereas insulators or resistors are materials or substances which...
By: Elton Gahr
One of the greatest difficulties of understanding the universe in the past has been that you can only examine those things that naturally exist. In addition the materials couldn’t do anything that couldn’t be done in nature. Metamaterials are a modern tool for...
How scientists and engineers use metamaterials
By: Nancy Seddens
In the early 1970’s the words “Gentlemen, we can rebuild him. We have the technology.” introduced episodes of the ‘The 6 Million Dollar Man’. Rebuilding people by replacing lost limbs with mechanical parts was science fiction at that time but is...
How metamaterials interact with electromagnetic waves
By: Effie Moore Salem
Metamaterials and electromagnetic fields belong together, but before any conclusive statements can be made concerning how they react, individual introductions must first be made: *Metamaterials are specially designed materials purposely created to interact with electromagnetic waves. According to Materials Science and Engineering, "Metamaterials are composite...
How to test which solids and liquids are the best conductors of electrical current
By: David Braybrooke
Any substance that electricity is able to move through is known as a conductor. It is possible to set up tests that measure the conductivity levels of certain materials, whether they be liquids or solids. A few simple materials are needed in order to carry...
The 19th century path toward quantum physics
By: SEG
Classical mechanics was Isaac Newton’s 1687 vision of the world: indestructible matter conducted the forceful energy exchanges propelling the ‘great mechanical machine’ of the universe. Definitively disassembled for inspection and precisely observed, measured and weighed with certainty, scientists would be capable of determining...
Metamaterials: The invention of the invisibility cloak
By: Nigel Holmes
In his 1897 novella, "The Invisible Man" H. G. Wells speculated that it might be possible for a man to become invisible by manipulating his refractive index. Little over a hundred years later science is close to making his dream a reality, and as Wells...
By: Nigel Holmes
Take a look around; everything you see is made of some kind of material. Your desk might be wood, the carpet is composed of wool or perhaps polymer fibers and the windows are made from glass. These are all materials, and materials have properties such...
By: Shawn Wells
The ability to turn invisible has been a literary device in science fiction stories for decades. H.G. Wells wrote his “Invisible Man” in 1897. J.K. Rowling has won many accolades for her “Harry Potter” series, in which the title character can...
By: Omar Salvador
The Buzz About Electromagnetic Fields Continues None of us has ever seen, heard, or, at the very least, felt electromagnetic fields. But wherever electric current runs, we can be sure electromagnetic fields are present. Not a few people have expressed concern about the possible dangers...

 

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