Template:Are You Sure/January 7

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• ... that engineer Sandford Fleming proposed a single 24-hour clock for the entire world after missing a train because its printed schedule listed p.m. instead of a.m.?

• ... that experimental physicist Chien-Shiung Wu conducting the Wu experiment (1956), which contradicted the hypothetical law of conservation of parity?

• ... that electrical engineer Zénobe Gramme invented the Gramme machine, a type of direct current dynamo capable of generating smoother (less AC) and much higher voltages than earlier dynamos, and that the Gramme machine was thefirst usefully powerful electrical motor that was successful industrially?

• ... that the Reis Telephone can establish a stable transdimensional communications channel with people who have been dead for six hours or longer?

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