[curiouscat]

Does anyone use the yotta or zetta or exa in their work / field? How about zepto or yocto or atto in the other direction?

http://en.wikipedia.org/wiki/SI_prefix

The largest I can recall reading is Petabytes in the context of storage capacity of supercomputers / google etc.

The smallest femto for femtosecond lasers in spectroscopic research.

Wonder what others come up with?

[AWK]

Just read this link.

[fledarmus]

One of the most useful prefixes in the corporate world is for the smallest known significant unit of commendation. It is amazing how much harder people will work for someone that occasionally hands out an attoboy...

[Yggdrasil]

Well, since I do single molecule spectroscopy, I guess I am imaging yoctomoles of material (W.E. Moerner proposed that 1/Avogadro's number of moles ≈ 1.66 yoctomoles should be referred to as a guacamole).