6 ideas
| 18085 | Values that approach zero, becoming less than any quantity, are 'infinitesimals' [Cauchy] |
| 18084 | When successive variable values approach a fixed value, that is its 'limit' [Cauchy] |
| 22363 | You have only begun to do real science when you can express it in numbers [Kelvin] |
| 13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
| 20644 | Energy has progressed from a mere formula, to a principle pervading all nature [Kelvin] |
| 20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |