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Likström genom jorden stoppade järnvägstrafiken 1946 (Elektrifiering/elektrisk drift)

av Peter Berggren, Friday, July 01, 2011, 10:47 (4905 dagar sedan) @ M Carlson

Även i Mellerud, inne på trafostationen, fanns ju helt nyligen likboden kvar från likströmsexperimenten på 1940-talet. Har nog bild på den nånstans om jag letar lite.

Likströmsexperimenten, och senare Gotlandsförbindelsen, och efterföljande likströmsöverföringar är ju en intressant del av elhistorien som inte fått nått övergripande skrivet ännu. Istället får man leta i en mångfald källor, artiklar och notiser om man vill veta mer om detta.

Hela tråden:

 

Time: 241
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE pid = 0 AND (mlf2_akismet_rating.spam = 0 AND mlf2_b8_rating.spam = 0) AND category IN (0, 4, 5, 6, 7, 8, 9, 25, 14, 23, 19, 22, 24, 10, 21, 11, 12, 13, 15, 16, 26, 18, 20, 27)

Time: 938
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE (mlf2_akismet_rating.spam = 1 OR mlf2_b8_rating.spam = 1)
Time: 1220
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE category IN (0, 4, 5, 6, 7, 8, 9, 25, 14, 23, 19, 22, 24, 10, 21, 11, 12, 13, 15, 16, 26, 18, 20, 27) AND (mlf2_akismet_rating.spam = 0 AND mlf2_b8_rating.spam = 0)

Total time: 2411