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Thanks Michael.

Discussion in 'The Hummy Arms' started by keithatrochdale, Jan 17, 2011.

  1. keithatrochdale

    keithatrochdale Super Moderator Staff Member

    Well we now have an area to discuss anything, lets remember to play nicely and respect other people.
     
  2. hmm, that's not much fun :p
     
  3. Brian

    Brian Administrator Staff Member

    What is there to discuss.:D
     
  4. MrPloppy

    MrPloppy Member

    Well, for starters there's these two questions which have stumped me since I were a uni lad...:

    1. Why does a kettle make a very loud noise, when a pan of boiling water doesn't?
    2. Why is Britain 'Britain-shaped"?

    :)
     
  5. Brian

    Brian Administrator Staff Member

    The kettle body is resonating and amplifying the noise.:)
    Does an old fashioned kettle that you use on the stove make a loud noise?
     
  6. C4HD tonght at 20:00 has a program on that....
     
  7. MrPloppy

    MrPloppy Member

    It does a bit, but it certainly isn't as loud as an electric kettle! And going back to the pan, the (slight) noise it does make isn't amplified when you put a lid on it!

    I've experimented! :)
     
  8. MrPloppy

    MrPloppy Member

    Wow! "the birth of Britain"... looks good, although I'm currently on a train going home at the moment, so I'll miss it!

    If only I had a PVR capable of watching 4od.... </dreams> :)
     
    framedtoo likes this.
  9. ha yes - that would be nice. Maybe next january
     
  10. Brian

    Brian Administrator Staff Member

    Perhaps we'll all have to get a YouView box.;)
     
  11. Sandholme

    Sandholme Member

    Because if it was the shape of Canada it would bump into Ireland and Holland
     
  12. framedtoo

    framedtoo Member

    and be joined to france
     
  13. MrPloppy

    MrPloppy Member

    True, but you two are falling into the nifty trap! See, you're saying why something is what it is by saying its not something else; like saying a square is a square because its not a circle.

    We need DEEP, ladies and gentlemen. Deep...! :D
     
  14. MrPloppy

    MrPloppy Member

    And I still don't think the kettle one is answered yet either. Now can you see why these questions have haunted me for the last 20 odd years!?! ;)
     
  15. MrPloppy

    MrPloppy Member

    We don't allow Google in the house on account of it not being house trained. But anyway, they didn't answer the question: lots of good stuff about why the kettle makes a noise, but nothing about why a pan (with lid on if you like!) doesnt. How often have you boiled water for your spaghetti and not realise its been on the stove boiling away for ages!? Not much noise you see...;)

    I think its aliens.
     
  16. adrenalize

    adrenalize Member

    Hmm, the pan on the stove will have a more uniform large area (the base) which is in contact with the water - the water heats more uniformly and you don't get superheating or cavitation - which makes the noise.

    The kettle which often has a heating coil has a much smaller area and doesn't transfer the heat easily - hence the superheating and cavitation which is explained in the articles previously quoted.

    You may find on some poor quality pans that don't distribute the heat well - especially on a low quality ceramic hob that doesn't heat evenly that you can hear some cavitation and see bubbles concentrated in a small area.
     
  17. MrPloppy

    MrPloppy Member

    That's a good one - sounds very plausible. However, just to point out that my kettle is one which has a plate on the bottom and no physical element. So, essentially, my kettle and the pan on the stove are the same, aren't they?

    Isn't this great? I think we need more questions for discussion. After all, this is probably what we would be talking about over a pint in the Hummy Arms, if there was such a place! :)
     
  18. parish

    parish Member

    Try boiling the kettle with the lid off/open (if it has one) - it's a lot quieter as the sounds isn't as contained.

    Also, even with a concealed element kettle, the heat won't be as evenly distributed on the base as many, certainly cheaper ones, just have a std kettle element soldered to the underside of the base.
     
  19. parish

    parish Member

    Which would make it easier to get there (and Belguim) for the cheap fags and booze :)
     
    MrPloppy likes this.