[time-nuts] 15 ns vs. 15 nS

[Chuck Harris]

Rob Kimberley wrote:
> Happy memories...
> 
> I remember being switched half way through my "A" Level Physics course from
> cgs to MKS in 1968. 
> 
> Legal here in UK to show weights & measures in shops in both metric and
> imperial systems. Fuel at petrol (gas) stations sold in litres, and distance
> on roads still shown in miles (!!). Never did understand how the US gallon
> was smaller than the Imperial one though...
> 

Pretty simple, really, a US gallon is 4 quarts (as in quarters), an imperial
gallon is 5 quarts.

The real question is when did the imperial gallon pick up the extra quart.

-Chuck Harris