how to produce electric currents with magnets - part 13 of 17. experiments with a magnet and battery show that electricity and magnetism are interrelated and that an electric current can produce magnetic effects - 電磁鐵 個影片檔及 b 捲影像00:37電池
how to produce electric currents with magnets - part 7 of 17. experiments with a magnet and battery show that electricity and magnetism are interrelated and that an electric current can produce magnetic effects - 電磁鐵 個影片檔及 b 捲影像00:30
"world's mightiest atom smasher!" superimposed over electricity flashing on black screen / outdoor sign "brookhaven national laboratory" / car drives... - 電磁鐵 個影片檔及 b 捲影像01:08
factory floor with heavy machinery / vs men assembling automobiles / vs five men grouped over blueprints; men's hands making notation on schematic;... - 電磁鐵 個影片檔及 b 捲影像01:09
steel girders are moved with an electromagnet crane at the dneprovsky iron & steel works, operated by evraz group, in dnipro, ukraine, on wednesday,... - 電磁鐵 個影片檔及 b 捲影像02:00
smokestacks, one spewing smoke / pan rooftops and smokestacks / more shots smokestacks / buckets overhead moving along cables / poster in german:... - 電磁鐵 個影片檔及 b 捲影像02:16
typed card describing clip / pan of smokestacks of the steel works at the monongahela river / a long row of tall stacks with a cone-roofed... - 電磁鐵 個影片檔及 b 捲影像01:04
an industrial electric magnet transfers scrap metal in a junkyard as a freight train moves in the background / a massive shearing device chops pieces... - 電磁鐵 個影片檔及 b 捲影像01:06
electricity and how it is made - part 18 of 27. illustrates how electricity is produced, what it does, and how it is used to give us light, heat, sound, and power. both static and current electricity are illustrated through a series of simple demonstratio - 電磁鐵 個影片檔及 b 捲影像00:30
electricity and how it is made - part 16 of 27. illustrates how electricity is produced, what it does, and how it is used to give us light, heat, sound, and power. both static and current electricity are illustrated through a series of simple demonstratio - 電磁鐵 個影片檔及 b 捲影像00:35
how to produce electric currents with magnets - part 17 of 17. experiments with a magnet and battery show that electricity and magnetism are interrelated and that an electric current can produce magnetic effects - 電磁鐵 個影片檔及 b 捲影像00:35
how to produce electric currents with magnets - part 16 of 17. experiments with a magnet and battery show that electricity and magnetism are interrelated and that an electric current can produce magnetic effects - 電磁鐵 個影片檔及 b 捲影像00:38
how to produce electric currents with magnets - part 15 of 17. experiments with a magnet and battery show that electricity and magnetism are interrelated and that an electric current can produce magnetic effects - 電磁鐵 個影片檔及 b 捲影像00:35電池
how to produce electric currents with magnets - part 14 of 17. experiments with a magnet and battery show that electricity and magnetism are interrelated and that an electric current can produce magnetic effects - 電磁鐵 個影片檔及 b 捲影像00:36
how to produce electric currents with magnets - part 11 of 17. experiments with a magnet and battery show that electricity and magnetism are interrelated and that an electric current can produce magnetic effects - 電磁鐵 個影片檔及 b 捲影像00:35
how to produce electric currents with magnets - part 10 of 17. experiments with a magnet and battery show that electricity and magnetism are interrelated and that an electric current can produce magnetic effects - 電磁鐵 個影片檔及 b 捲影像00:34
how to produce electric currents with magnets - part 9 of 17. experiments with a magnet and battery show that electricity and magnetism are interrelated and that an electric current can produce magnetic effects - 電磁鐵 個影片檔及 b 捲影像00:32
how to produce electric currents with magnets - part 8 of 17. experiments with a magnet and battery show that electricity and magnetism are interrelated and that an electric current can produce magnetic effects - 電磁鐵 個影片檔及 b 捲影像00:29
how to produce electric currents with magnets - part 6 of 17. experiments with a magnet and battery show that electricity and magnetism are interrelated and that an electric current can produce magnetic effects - 電磁鐵 個影片檔及 b 捲影像00:31
energy for the future - part 14 of 28. constantly growing energy needs, dwindling reserves of fossil fuels, recent fuel shortages, and increasing fuel costs -- such conditions have established a need for new energy sources. this film examines energy alter - 電磁鐵 個影片檔及 b 捲影像00:39美國
medium hand-held tilt-up - an electromagnet picks up a steel slab at a steel factory / claymont, delaware - 電磁鐵 個影片檔及 b 捲影像00:10
steel workers stand beneath a magnetic crane that deposits scrap metal into a cauldron. - 電磁鐵 個影片檔及 b 捲影像00:17
an overhead crane operator moves the crane and lowers the electromagnets to lift sheets of steel. - 電磁鐵 個影片檔及 b 捲影像00:32
