| Science Facts |
| Author | Nick Day |
| Cards | 150 |
| Size | 21 KB download |
| Price | free |
Various scientific facts in several categories like Astronomy, Biology, Chemistry, Geology and Physics. You will also find here a list of sound levels in decibels (from human breathing to a jet plane takeoff), metric prefixes (like mega, giga, tera), ISO paper sizes or Beaufort windspeed scale.
