from The Century Dictionary and Cyclopedia
- n. An application of the principle of the water-wheel, consisting of a series of buckets attached to an endless chain which runs over a pair of sprocket-wheels, from either one or both of which power may be obtained: designed to utilize a stream of water which has a considerable fall, but is limited in quantity.
Sorry, no etymologies found.
I’m not sure I beleieve ANY of the adjustments, especially the more recent ones when satellite measurements accurate, but measuring only skin temperatures began to replace bucket-engine room measurements.
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