Electromagnets: How They Work

Duration: 600 ft.

Year Published: 1960

Creator: Encyclopaedia Britannica

Complete Record: CU magnet (U shaped), MS boy pouring nails onto table, CU picking up nails with magnet (shakes magnet) pulls some off with hand, MS of the same thing, shot of large construction magnet picking up pieces of metal, MCU of man working controls (hands), CU switching lever, CU of object falling from magnet, shot of battery being hooked up (see hands), CU of closing circuit, animation showing flow of current, places petri dish with sand by battery, CU of magnet picking up sand, CU touching wire from battery to sand (or iron), closes circuit, CU touching wire to iron (iron sticks to wire) CU breaks circuit, CU iron falls off wire, puts nails underneath, CU of no attraction with wire, wraps wire around pencil to make a “coil”, breaks circuit, CU nail falls off, CU of metal rod trying to attract nails, closes circuit, tries to pick up nails with coil, attraction, but doesn’t stay attached unless all nails are touching, puts metal rod via coil, close circuit, picks up all nails (CU too), tries this with different weighted objects, CU of picking up coil with fingers and attracting nails, CU without coil (doesn’t work), VS picking up iron with rod inside coil, boy (MCU) finding book, calls, CU dialing, CU of connection, CU of phone bells and connections, MCU boys pick up headset, brings to ear, zoom in on ear receiver, back to MCU of 1st boy making phone call, egg beater, mixing cake batter, CU train going frame left diagonal, CU of metal rod and dish with nails, picks nails up, puts wood over metal rod and rod with coil, CU pepper shaker with iron, pours onto wood , CU pattern of iron over metal rod, no pattern with rod and coil, CU close circuit, CU of pattern forming