pattern of field lines round a bar magnet Place a small compass (plotting compass) near the north end of the bar magnet on a sheet of paper ,Use a pencil to mark on the paper where the arrow head points , Move the compass so that the tail of the arrow is ...
It consists of a long piece of thick copper wire connected in series with a switch and a battery. The wire passes through a piece of cardboard on which is placed a number of plotting compasses.doi:10.1007/978-1-349-86062-3_23H. J. P. Keighley...
field will depend on the strength of that field, the degree of hardness of the iron (retentivity), and also upon the amount The above check-off list describes a simplified method of physical stress applied to the bar while in the magnetiz- of adjusting compasses, designed to serve as a ...
It consists of a long piece of thick copper wire connected in series with a switch and a battery. The wire passes through a piece of cardboard on which is placed a number of plotting compasses.doi:10.1007/978-1-349-07381-8_24H. J. P. Keighley...