>>Besides, what is your defo. of "steam" - the white opaque vapour in a turkish bath or the invisible matter that issues from a kettle's spout and becomes the above?
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>It's the same thing - the only difference is in the ambient temperature and whether it's condensing or not. But water in the air is water in the air.

I seem to recall our physics teacher defining the difference: The super hot invisible stuff is steam - the opaque mass is "water vapour" - or summat like that (it was a long time ago).

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>>I guess our term comes from a cross between the steam heating type and a "geyser" - a wall-mounted hot water generator for washing (say in bed-sits) and/or making hot drinks with.
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>>Heh, I've just looked some up and, to add more confusion, you can get oil, electric or "gas boilers" - for the Dragans in us this would suggest they boil gas FGS!
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>Are there any other FGs but gas FGs nowadays? I think there used to be wood FGs once upon a time, but never saw one.

Don't know what your FG stands for - but you can get wooden FEGs - such as a totem pole, or in "the Wicker Man"