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What does William Thomson, 1st Baron Kelvin have to do with calculations on data rate?
William Thomson contended that the signalling speed through a given cable was inversely proportional to the square of the length of the cable.
How were William Thomson, 1st Baron Kelvin contributions helpful to society?
During the 1880s, William Thomson worked to perfect the adjustable compass to correct errors arising from magnetic deviation owing to the increased use of iron in naval architecture.

Question: What did he do once in the board of directors?
Self-contained rewrite: What did William Thomson, 1st Baron Kelvin do once in the board of directors?