Sujet : Re: OT: Converting miles/km
De : peter (at) *nospam* pmoylan.org (Peter Moylan)
Groupes : sci.lang alt.usage.englishDate : 20. Sep 2024, 12:55:41
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vcjkbf$1322i$2@dont-email.me>
References : 1 2
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On 20/09/24 19:30, Helmut Richter wrote:
I like much more those thumb rules that actually allow you to estimate orders
of magnitude, e.g.:
>
1 year ≅ π · 10⁷ sec ≅ 31415926.54 sec
>
or
>
1 year ≅ √10 · 10⁷ sec ≅ 31622776.60 sec
>
or, only for those wanting more precision, the arithmetic mean of the two
which has three leading digits correct.
The one non-metric measurement that I find useful is "one foot per nanosecond".
-- Peter Moylan peter@pmoylan.org http://www.pmoylan.orgNewcastle, NSW
OT: Converting miles/km
Re: OT: Converting miles/km