Transfer files wirelessly from one Mac to another using Airdrop

Macs have a built-in way of letting you transfer files from one Mac to another using Airdrop over a wireless network connection. According to Apple: "AirDrop lets you quickly send files, clippings, webpages, and more to anyone near you—wirelessly. AirDrop doesn’t require passwords, setup, or special settings. It makes sharing with neighbors as simple as dragging and dropping." I tried…