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Vad håller överkonduktören i? (Historiskt material)

av Sune Nylén, Tuesday, October 26, 2021, 12:27 (1299 dagar sedan) @ Torbjörn Mårtensson

Karbid lampa fungerar väl så att man droppar vatten på kalciumkarbid varvid acetylengas utvecklas. Då kan man nog knappast ha vattentanken under. Men som sagt...Konstruktionerna kan
vara mångskiftande.;-)

Hela tråden:

 

Time: 258
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Time: 1120
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: 1322
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: 2712

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