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Thread: Happy meals.

  1. #16
    Join Date
    Jun 2005
    Location
    Townsville. Tropical Nth Qld.
    Posts
    0

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    Quote Originally Posted by BobL View Post
    I wouldn't be too quick to sneer or laugh at fractions, it's not old fashioned or quaint but a real mathematical thing.
    Many formulas in Physics and maths use fractions.
    For example; the volume of a sphere is not 1.33 ∏ r^3 but 4/3 ∏ r^3 and there is a difference, especially if you have to get to the moon..
    The moment of inertia for a spherical shell with the axis through the centre is 2/3MR^2

    In practice in the shed I do tend to work with metric systems but as I also often use imperial drill, tap & die sets and also use Vernier callipers with the fractional display I'm often mixing and matching.
    Bob, I was not sneering at fractions as I work with both systems. As I grew up with imperial measurements and my main metal lathe is imperial, I work in thou's. Because of that I can't get my head around machining in sub 1mm measurements. I am so bad, when the new milling machine arrived I got new dials 3D printed for it with thou graduations. When I kick the bucket it's new owner can put the original dials back on.
    Rgds,
    Crocy.

  2. #17
    Join Date
    Dec 2007
    Location
    Sydney
    Posts
    99

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    ‘Angels share’.
    There’s a rather nice movie of that name about some Scottish dudes who help themselves to a small amount from each barrel.
    H.
    Jimcracks for the rich and/or wealthy. (aka GKB '88)

  3. #18
    Join Date
    Jul 2003
    Location
    Riverhills, Brisbane
    Age
    65
    Posts
    0

    Default

    and they have the audacity to call it a 'BIG' Mac.......I can buy burgers twice that size at Fish & Chip shop. You need 2 of them to feel like you've had a meal.

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