By the definition of using light you can quanify a foot or yard by a
division of that length. In a way the scientific advances that allowed the
modern definition of the metre also made the most accurate yard length ever,
thanks to the very concept of the metre.
But what I am trying to say that at some point the yard was compared to the
metre to set-up a conversion factor.
It would be interesting to know how they actually went about doing this.
Did they physically take a metre stick to the official yard at Trafalgar
square?
From: "Philip S Hall" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>,"U.S. Metric Association" <[email protected]>
Subject: Re: [USMA:35714] Re: decimal time
Date: Tue, 17 Jan 2006 18:33:58 -0000
>>Each day the English drive miles defined in metres and drink pints of
beer
>>defined in millilitres, while in the USA, people watch football where
the
>>main scoring is done over an exact distance of exactly 9.144 metres.
>>It¹s called Ohidden metric¹.
>>
> I'm not convinced that a=b makes 'b' a hidden version of 'a'. I see
where
> you're coming from but you can apply the argument both ways.
>
Definition of metre:
The length of the path travelled by light in a vacuum during a time
interval 1/ 299 792 458 of a second.
Definition of yard:
1 yd = 0.9144 m
Dependencies:
metre --> real world
yard --> metre
Phil Hall
