- Title: F-A3108
- Summary: PRINCIPLES OF MAGNETISM: PRINCIPALS OF MAGNETISM. MAGNETIC FIELDS. MAGNETIC POLES. EARTH'S MAGNETIC PULLS. ELECTROMAGNETIC INDUCTION.
- Description:00:43:21 - MAGNET HANGING OVER COMPASS. 00:43:25 - A QUESTION MARK GROWS BIGGER. 00:43:54 - HANDS ROLL BAR MAGNET INTO METAL SHAVINGS. SHAVINGS ALL OVER BAR MAGNET. MORE METAL SHAVINGS ATTRACTED TO MAGNET. PLACES OF CONCENTRATION, MAGNETIC POLES. MAGNETIC FIELD. 00:44:32 - ILLUSTRATIONS OF MAGNETIC FIELDS. COOL DESIGNS. DRAWINGS OF MAGNETIC FIELDS. 00:45:08 - CU MAN'S HANDS PLAY WITH RUBBER BANDS. 00:45:28 - MAGNETIC EXPERIMENTS. EXPERIMENTS WITH MAGNETS NORTH & SOUTH ENDS MEET. 00:46:09 - HANDS PULL AT SPOOLS ON STRETCHED RUBBER BANDS 00:46:16 - ILLUSTRATION SHOWS TENSION OF MAGNETIC FORCE. 00:46:47 - HANDS PLAY WITH LITTLE MAGNETS, CROWDED WITH LINES OF FORCE. FORCES THE MAGNETS APART. ILLUSTRATION FOLLOWS 00:46:59 - MAN BREAKS PIECE OF METAL WITH A HAMMER. BROKEN BITS OF MAGNET BECOME COMPLETE MAGNET 00:47:15 - ANIMATED MAGNETIC EXPERIMENTS. CONSEQUENT POLES AIRPATH OF HIGH RELUCTANCE. IRONPATH OF LOW RELUCTANCE MAP 00:49:04 - MAN CONDUCTS EXPERIMENTS WITH MAGNETIC FIELDS, MAGNETISM. INDUCTED MAGNETISM. PUTS STEEL FILINGS INTO A TUBE. MOLECULES OF SOFT IRON. ILLUSTRATION IRON BAR. STEEL BAR. 00:51:23 - MAGNET OVER COMPASS. NORTH POLE. OPPOSITE POLE. SOUTH POLE. 00:52:07 - GLOBE ILLUSTRATES EARTH'S MAGNETIC PULL. NORTH GEOGRAPHIC POLE. IRON DEPOSITS. 00:53:02 - POINTER ON MAP. SHOWING IRON DEPOSITS. MAGNETIC LINES. DISTORTION DUE TO IRON DEPOSITS. LINES OF VARIATION. ISOGONIC LINES 00:54:46 - MAN CONDUCTS MAGNETIC EXPERIMENT. 00:55:14 - CU SPINNING COMPASS 00:55:29 - ILLUSTRATION SHOWING COMPASS NEEDLE ALIGNING WITH EARTH'S MAGNETIC LINES. 00:56:03 - CHINESE BOATS AT SEA. 1920s. 00:56:16 - CU COMPASS. 00:56:22 - LAND SURVEYOR LOOKING INTO SURVEYING MACHINE. 00:56:34 - SAILOR STEERING BOAT. 00:56:50 - PILOT IN PLANE. 1920;S 00:57:01 - HUGE ELECTRIC GENERATOR 00:57:04 - CU OLD FASHIONED TELEPHONE. 00:57:08 - CU 1920s RADIO 00:57:10 - SPACE, STARS.
- Collection: Historic Films
- Producer:Historic Films
- Transmission Date:01/01/1920
- Rights:On request
- Decade: 1920s
- File Name: F-A3108