system
Given the following post, respond as if you're commenting on Reddit:
human
Are drops of water consistent in size? How big is that, and why? And what about other substances like oil, or molten metal?
gpt
They are not consistent in size. Think about using a micro pipet or any dropper and then think about mist or large droplets of water on a waxed car. Drops of water from the same object are likely to be of similar size due to surface tension (adhesion) and the force on the drop being similar.