Subscribe for news updates every 10 minutes. Like/Dislike, Favorite, Comment, Embed on Blog, Facebook Share, and Tweet this video. Get the word out on this video. Get an email once a day tinyurl.com Like on Facebook to get updates tinyurl.com Follow on Twitter to get updates tinyurl.com - Monday June 6 2011 10:35 am en.wikipedia.org An unusual unit of measurement is a unit of measurement that does not form part of a coherent system of measurement; especially in that its exact quantity may not be well known or that it may be an inconvenient multiple or fraction of base units in such systems. This definition is deliberately not exact since it might seem to encompass units such as the week or the light-year which are quite 'usual', in the sense they are often used; if they are used out of context they may be 'unusual', as demonstrated by the FFF system of units. Unusual units of measure are sometimes used by scientists, especially physicists and mathematicians, and other technicians, engineers and computer programmers, either humorously or for real convenience when dealing with objects in the real world whose quantities in more conventional units may be awkward to use. They are also employed by journalists in an attempt to give meaningful comparisons. Whether such comparisons actually are meaningful is open to debate, since the comparative quantity itself may not be well known with much accuracy. During the twentieth century, the Soviets and French briefly used a variant of ...