have been used for steel finishing for more than a century. The more complex iron nitride α”-Fe 16 N 2 was first discovered in 1951; its magnetic properties were explored in the early 1970s and ...

Energy innovation can take many forms, and the variety in energy research was on display at the summit. ARPA-E, part of the ...

The most common magnetic metal is iron. You don't see too many objects made of pure iron but you do see lots of different things made of steel, which has iron in it. Try the activity to see which ...

5p and 10p coins made after January 2012 are magnetic. This is because 5p and 10p coins used to be made out of cupro-nickel, but this was changed to nickel-plated steel. Steel contains iron ...