It's easiest to understand scale when we can examine things by merely looking at them. The iPhone is smaller than a breadbox and an SUV is larger than a bicycle. When it's difficult to compare by sight, measurements help us out so we can agree that the blue ribbon pumpkin at the fair is the one that weighs the most. But what about the far ends of the scale? It's not a simple task to imagine how many times bigger an apple is than a proton. Or how many times smaller a Tyrannosaurus rex was than the Milky Way. Or how about how many times larger a sequoia is than an amino acid? This lavishly designed Flash site helps us put it all in perspective, and makes us feel, well, small.
