Drivers with tachometers in their cars know that, give or take a little, their car’s engines spend a lot of their time running at about 2,000 rpm. That’s 2,000 revolutions per minute. That’s a lot of revolutions.To better understand that number, let’s break it down to revolutions per second. That works out to more than 33 revolutions per second. Count one-one-thousand and, by the time the