Pico means 10-12 = 0.000000000001
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The abbreviation "pico" represents the decimal power of 10 to the power of -12, or 10^-12. This means that one picometer (pm) is equal to 10^-12 meters. The prefix "pico" is derived from the Spanish word "pico," which means small or peak, indicating a very small value in the metric system.
pico- is a prefix that can be added to any measurement to mean divide by 1,000,000,000,000. femto- is smaller and means / 1,000,000,000,000,000. atto- is even smaller and means / 1,000,000,000,000,000,000.
The pico- prefix means x 10^-12 The tera- prefix means x 10^12 → 1 Ts / 1 ps = 1 x 10^12 / (1 x 10^-12) = 10^24.
The prefix "p" means "pico" - a millionth of a millionth of something. Therefore, 100 pF is 100 x 10-12 Farad, equal to 10-10 Farad. Since a Farad is, for most practical purposes, an extremely large unit, prefixes like micro, nano and even pico are often used with it.
Yes, a pico second is a thousandth of a nano second.