Which is denser,lead or feathers?
Here’s the the thing you are confused about. It is not density, it is weight. So if you are asking which WEIGHS more, a pound of feathers or a pound of lead, then the answer is they weigh the same – one pound. However, if you ask which weighs more a pound of feathers or a pound of gold, then the answer is the feathers weigh more. Why? Because gold and other precious metals are weighed using Troy weight, that has only 12 ounces to the pound, whereas feathers, lead and other common materials use Avoirdupois weight, that has 16 ounces to the pound. So 16 ounces of feathers is heavier than 12 ounces of gold. Even though they would each weigh one pound – it is different kinds of pounds. Neat.
