It's created depositing layers of about four microns.

And his mouth must be probably about three microns.

This is 20 microns thin, so this is about a baby hair's width.

I assure you, this is very tiny. It's just six microns on a side.

An interesting finding was that the impact flux for HST was considerably higher (factor 2 8) than for EURECA for crater pit sizes larger than 200 300 microns.

The lasers used in the experiments were Alexandrite, tunable in the range between 750 and 900 nanometres and various crystals doped with neodymium active in the region of between 1.054 and 1.064 microns.

A laser cutter to do press fit assembly with 3D from 2D, a sign cutter to plot in copper to do electromagnetics, a micron scale, numerically controlled milling machine for precise structures, programming tools for less than a dollar, 100 nanosecond microcontrollers. It lets you work from microns and microseconds on up, and they exploded around the world.