Theiling Online    Sitemap    Conlang Mailing List HQ   

Re: beyond _tera_[Fwd: dozenal and hexadecimal digits]

From:Lars Henrik Mathiesen <thorinn@...>
Date:Sunday, May 14, 2000, 23:38
> Date: Sun, 14 May 2000 15:50:26 EDT > From: Jonathan Chang <Zhang2323@...>
> Question: > If _mega_ = million > _giga_ = billion > & > _tera_= trillion, > what comes after these?
peta and exa (as many people have said already). These are both from Greek, meaning 'huge', just like giga and tera. I usually remember the ones after giga by the number of 3-zero groups: prefix groups pseudo-greek/latin tera 4 tetra- peta 5 penta- exa 6 exa- zotta 7 septi- yotta 8 octi- Going the other way, micro, nano and pico just have to be learnt. But femto and atto are obviously the number of zeroes in Scandinavian --- 15 = femton, 18 = atton; zepto and yocto are even more transparently derived from Latin than zotta and yotta. The Z and Y in the last two prefixes in each series are to get unique one letter prefixes, but someone in ISO must have had great fun coming up with them anyway. If things grow like they have, I may actually get to see a computer system managing a zottabyte of data before I retire in about 25 years. Lars Mathiesen (U of Copenhagen CS Dep) <thorinn@...> (Humour NOT marked)