The objectiveCover with a steel nail copper foil, a chemist working?

Not at all! A simple mixture and the metal is deposited alone.

You need
” 2 steel nails
” Sandpaper
” 4 copper coins (5 cents)
” Vinegar
” Salt
” Spoons
” Glass

Shine the nail1 / Rub a nail with sandpaper. It must be brilliant.

Saltwater2 / In the glass, [...]

ProjectOur globe is covered at 70% of oceans and yet we know virtually nothing about this medium. The pioneer Jacques-Yves Cousteau was the first to be interested in it and launch missions aboard the Calypso.

The architect Jacques Rougerie is far from being a novice in the field of marine architecture. For thirty years he [...]