In this article about new scientific developments to redefine the kilogram and remove its link to a physical object, Ronnie Cohen writes about recent reports about a new scientific breakthrough in getting the most accurate estimate of Avogadro’s constant to date, which can help to redefine the kilogram. These reports have been published in the last few weeks and you can find a list of sources at the bottom of this article.
Category: Technical
‘Think metric’. A customary way to success
We look at the metric changeover in the UK construction industry, and some of the posters that were part of it.
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The white heat cools
We review the events that followed the announcement in May 1965 of a change of Government policy on the adoption of metric weights and measures.
1963 and “white heat” in Scarborough
Fifty years ago, the Government made a low-key announcement of a change in policy in relation to the use of metric units by industry. We consider how a speech by the Leader of the Opposition two years earlier had signalled the possibility of progress in this area.
Whitworth’s forgotten legacy
Whitworth is famous for the eponymous screw thread, and for his promotion of standard measures and interchangeability that brought about an engineering revolution. Less well known are his enthusiasm for decimal measurement and his opposition to the introduction of the metric system in Britain.
A Biblical specification and a problem solved (almost)
We are justifiably proud in England of the legal principles laid down in Magna Carta in 1215, but less supportive of its command, “Let there be one measure …”. However, weights and measures laws are as old as civilisation. In this article, Ronnie Cohen looks at a unit of length from 3000 years ago, and makes a comparison with today.
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Has SI delivered?
The fuss about measurement units at the start of this century has overshadowed progress thirty years earlier in education, science and engineering. We look at the benefits that were predicted at the start of the transition to SI and ask if they have been delivered.
Maybe they were moonlighting …
In contrast to his last article, John Frewen-Lord takes a look this week at some of the activities of seven famous people who later had SI units of measurement named after them.
Metrication of the rail network
Last October Network Rail announced that they will be phasing out miles, chains and yards on the British Rail network in favour of metric units. This has already been done on most, if not all Britain’s metro and tram systems while the dimensions of railway vehicles have been measured in metric units since the 1970s. Why this change of heart?
(Article contributed by Martin Vlietstra)
From 1520 to 3 – metric still rules (mostly)
A first for Metric Views – an article on model railways. John Frewen-Lord takes us to an area that many of us last visited in our childhood.
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