wood - plank
(Thats as in a Plank of wood, not planck's constant which is obviously spelt different but its a useful constant reflecting the sizes of energy quanta in quantum mechanics. It is named after Max Planck, one of the founders of quantum theory, who discovered it in 1900)
(Thats as in a Plank of wood, not planck's constant which is obviously spelt different but its a useful constant reflecting the sizes of energy quanta in quantum mechanics. It is named after Max Planck, one of the founders of quantum theory, who discovered it in 1900)