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The carbon trade originated with the 1997 Kyoto Protocol and is intended to reduce overall carbon dioxide emissions to 5% below 1990 levels between 20.The carbon trade also refers to the ability of individual companies to trade polluting rights through a regulatory system known as cap and trade.

Within this range are many brushes for obsolete models and also Carbon Brushes that would normally only come as complete unit with a replacement motor.

These were selected for do-ability, scientific value, and for how interesting each could be.

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Here’s an example using the simplest atom, hydrogen. Carbon-14 is an unstable isotope of carbon that will eventually decay at a known rate to become carbon-12.

Radiocarbon dating uses isotopes of the element carbon. Cosmic rays – high energy particles from beyond the solar system – bombard Earth’s upper atmosphere continually, in the process creating the unstable carbon-14. Because it’s unstable, carbon-14 will eventually decay back to carbon-12 isotopes.

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