His spray dryer ended up being three stories high, with a nozzle at the top that was 4 feet long.

FORBES: Magazine Article

Using physics similar to that of evaporative swamp coolers, the warm air from the spray dryer cools the liquid insulin as it evaporates.

FORBES: Magazine Article

The physics of a spray dryer are like that of a diesel engine's fuel injector in that it atomizes liquid (insulin or gasoline) into droplets.

FORBES: Innovation