A chance "eureka moment" by a Scottish physicist solved a problem that had plagued the transatlantic cable -- and made a lord out of the man who had the insight. One of the fundamental problems of ...

Scale reads 0 to 50 but numbers are reversed - these will read correctly when viewed thru the spotting telescope used with this galvanometer (328111). Unit has clip marks in center where it was held ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

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