000			00771nam a2200169 4500
001			00305316
003			PWmBRO
005			20240602100229.0
008			000000n 00000 eng u
245	0	0	_aMagnetism.
300		1	_aVideocassette (VHS)(14 min.) : sd., col., 1/2 in.
500	0		_aPart One of a two-part film on magnetism which looks at Faraday's idea of a magnetic field or how the presence of the magnet makes a difference to the space it surrounds by giving it magnetic effects, and how you can map out the direction of the magnetic force by the lines along which a compass sets itself by means of iron filings.
650			_aMagnetism _xStudy and teaching.
700			_aRoyal Institution of Great Britain.
700			_aragg, Lawrence.
942			_2ddc
999			_c22086 _d22086