zeptojoule

Etymology

From zepto- + joule.

zeptojoule means An SI unit of energy equal to 10⁻²¹ joules. Symbol: zJ Lexicurio rates it Sui generis — a strength score of 88 out of 100.

noun

An SI unit of energy equal to 10⁻²¹ joules. Symbol: zJ“When a bundle with a drag coefficient of 200 nN · sec · m⁻¹ (Howard and Hudspeth, 1988) produced a 25 nm, triangle-wave twitch 5 msec in total duration (Fig. 12A), the energy dissipated against viscous drag was ~100 zJ (a zeptojoule is 10⁻²¹ J).”