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.
For tips on how to turn these ideas into the best possible projects without wasting time, visit our winning projects section.
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.