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Ah 'ood answa t' question, bur as ah li' i' Yorksha ah'm offended by t' question. ah'm off naw ta race uz pigeons afowa doin eur shift daahn t' pit.
Quote from: paul.fr on 28/02/2008 10:12:07Ah 'ood answa t' question, bur as ah li' i' Yorksha ah'm offended by t' question. ah'm off naw ta race uz pigeons afowa doin eur shift daahn t' pit. No whippets?
T' question does not seh wha' type o' kettle is bein used, ah 'ood think 'a' t' answa aboon by wee Andrew relates ta eur new type electric kettle. if t' question is relatin teur t' owd type o' kettle wi' eur cap/lid o'a t' spart then t' change i' pitch is caused by eur reed int' cap. as t' steam bulids up it forced o'a t' reed 'n dis gives theur t' whistlin kettle soun'. For those who are not from YorkshireThe question does not say what type of kettle is being used, I would think that the answer above by Andrew relates to a new type electric kettle. If the question is relating to the old type of kettle with a cap/lid over the spout then the change in pitch is caused by a reed in the cap. As the steam bulids up it forced over the reed and this gives you the whistling kettle sound.
When you boil a kettle ("put t'kettle on" for the benefit of visitors from Yorkshire) the note changes just before the kettle starts to boil. Why is this?Chris
It might be sommat to do with latent heat at near boiling point.