Tech Humor

Here's a huge collection of Engineering & Science Humor.

For example, How many AA batteries would it take to power a human?

A Manganese/Alkaline AA cell it rated at about 2.4 amp-hours. If we assume 1.5 volts average this gives approximately 3.6 watt-hours (slightly optimistic). Since there are 3,600 seconds in an hour this is equivalent to 12,960 Joules.

A human consumes about 2,000 calories/day. A dietician calorie is equal to 1,000 engineering calories. A calorie is equal to 4.2 Joules. Therefore this is equivalent to 2,000 * 1,000 * 4.2 = 8.4 * 10^6 Joules per day.

Dividing one by the other you will need about 648 AA cells to power a human for one day.