I'm being anal but I'm curious to ask something about tonight's Ripper Street on BBC. Part of the plot involved the electrification of an underground railway line. I recall that electrification of lines was only feasible using alternating current which Nikolai Tesla is credited. The series is based in London during the 1880-1890s thereabouts and it's possible alternating current was available then but I have a suspicion that only direct current was used. Searching for information is a little vague on the year when steam trains started to be decommisioned from use on the underground system.
Could it have been possible that something as long as an underground line could have been powered by direct current alone? I'm just wondering if Auntie didn't commit an historical error or not using electrification in the period the program is set.
Despite the critical reviews of the program and the wanton violence and abused women portrayed during the period it's set in it's a jolly fine period drama, something that once again, only the BBC can produce.
"I do not have to forgive my enemies, I have had them all shot." — Ramón Maria Narváez (1800-68).
"I don't need to shoot my enemies, I don't have any." - Me (2012).