Re: [FPSPACE] Timezones + metric vs. imperial units

Mgr. CSc. Antonín Vítek AVitek at
Sun Oct 10 05:57:18 EDT 2004

================= Původní zpráva =================
Od (From): "Allen Thomson" <thomsona at>
Komu (To): "FPSpace" <fpspace at>
Kopie (Cc): 
Předmět (Subject): Re: [FPSPACE] Timezones + metric vs. imperial units
Datum (Date): 8. 10. 2004 15:12

> Google now has a units conversion feature. ...  It 
> isn't clever enough, alas, to avoid generating spurious precision via 
> gratuitous decimal places, as these examples show.

I agree. I was already in a continuous battle with some editors of the Czech magazine Letectvi+kosmonautkia (Aviation + Astronautics), when the recalculated values given in non-metric units (e.g. HPs) to the metric ones with unnecerssary "precission". I proposed therefore the following simle rule: "Use only at maximum one more significant digit, than in source value, unless the precision of the original value can be determined in other way". I.e. for 300 lbs do'nt use 136.07769 kg, but round it to 140 kg.

Mgr. Antonin Vitek, CSc.

Office: Main Library, Academy of Sciences of the Czech Republic
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