Those who work in the field looking for meteorites keep a magnet with them at all times. This is always the first test; if the meteorite suspect is not magnetic, it is a meteorwrong. Good collectors learn very quickly how to identify meteorwrongs since what may be represented as a very rare stone meteorite (at $200 a gram!) could turn out to be an expensive piece of junk. The classic meteorwrong is an igneous rock known as a Cumberlandite.

Pray, do my service to his majesty.

Backfiring in mercury arc rectifiers has now been pinpointed as the primary cause of the Glasgow transformer failures. […] The chief causes of rectifier backfiring in the Glasgow units were overheating or unfavourable anode/cathode temperature differential; it has proved possible to overcome these, although occasional backfires do still occur.

Last night was wonderful. Can I see you again?