SMAP will track a tiny cog that keeps cycles spinning
Tuesday, January 27, 2015 - 08:00
in Physics & Chemistry
When you open the back of a fine watch, you see layer upon layer of spinning wheels linked by interlocking cogs, screws and wires. Some of the cogs are so tiny they're barely visible. Size doesn't matter—what's important is that the cogs fit together well so the wheels keep turning smoothly.