Goodbye to pi

Discussion in 'Just Talk' started by btiw2, Dec 11, 2018.

  1. btiw2

    btiw2 Screwfix Select

    The Mandelbulb (the 3d video) is pretty, but I've always thought that it was a bit of a cheat.
    The Mandelbrot set equation is almost the simplest equation you could write down. It's easy to remember. The complex structure is locked away in a small equation, and I like that. It's efficient.
    The Mandelbulb equation is much bigger and, I dunno, it just seems a bit cheaty. Looks great though.
     
    KIAB likes this.
  2. robertpstubbs

    robertpstubbs Screwfix Select

    Are there different units for whiskey and whisky?
    25ml ?
    35ml ?
    35.5ml ?
    1/4 gill ?
     
  3. robertpstubbs

    robertpstubbs Screwfix Select

    If you think of rotation in turns, do you also only have one cup and use that when cooking? Ie 1 cup of ingredient A + 2 cups of ingredient B always works irrespective of the size of the cup.
     
  4. SteveMJ

    SteveMJ Active Member

    Its imaginary :)
     
  5. btiw2

    btiw2 Screwfix Select

    I suppose so, but I would imagine that there are different units for whisky, whiskey and whiskey (depending on whether it's Irish or US).
    There again, US pints are different to our pints. Our pints are better.

    Cooking? That's far too practical for me. But, yes, that's a good example. Units don't matter provided you're consistent. Although radians are usually missed out by engineersin their units (e.g. angular momentum is often stated as kg m/s^2 not kg m radians /s^2)[1].

    A complex issue indeed.

    [1] I think that's right.
     
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  6. KIAB

    KIAB Super Member

    In cooking you have cup measurements, again english & american are different.

    British cups 250mls (10.00 fl oz) & US cups are 240mls (8.1 fl. oz) .
     
  7. robertpstubbs

    robertpstubbs Screwfix Select

    How big is a cup of tea?
     
  8. WillyEckerslike

    WillyEckerslike Screwfix Select

    Not big enough.
     
  9. KIAB

    KIAB Super Member

    A tea cup should hold 6 fl.oz

    But, not all tea cups are equal.

    And a mug is usually 10-12 fl.oz, but this also can vary.
     
    Last edited: Dec 14, 2018
  10. Isitreally

    Isitreally Super Member


    My morning mug is a pint. :):)
     
  11. longboat

    longboat Screwfix Select

    "Goodbye to pi"?
    If you want τ, if it's more convenient for you to use it then go ahead, use it.
    Surely it would be rather fickle of you to say "goodbye" to π?

    On second thoughts, I do prefer the new piece of π on countdown compared to her predecessor.
    Given the choice tho, I'd gladly take either.
     
  12. robertpstubbs

    robertpstubbs Screwfix Select

    Internationally there are even bigger variations.

    Personally I use Le Creuset ramekins which are 0.2L so about a cup when slightly heaped.

    But a cup is an inherently vague measure for dry foods anyway. Eg the mass of a cup of chopped onion will vary according to how finely it is chopped.
     
  13. robertpstubbs

    robertpstubbs Screwfix Select

    I’m still learning to use my iPad. How do I type in symbols for “pi” and “tau” etc. Is there something like Character Map?
     
  14. chippie244

    chippie244 Super Member

    I have 3 2lb bread tins and they are all different sizes.
     
  15. Isitreally

    Isitreally Super Member


    Maybe ones made of iron, one of steel and one's alloy. :D:D:D
     
  16. robertpstubbs

    robertpstubbs Screwfix Select

    Cup sizes are smaller in Japan.
     
  17. Isitreally

    Isitreally Super Member


    Is that a reference to a ladies under garment.
     
  18. robertpstubbs

    robertpstubbs Screwfix Select

    A cup in Japan is 200ml or 180.4ml.
     

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