Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 155
ided into 360 equalportions, each is called a degree. A right angle embraces 90°( ° is abbreviation for degree). All degrees are not of the same size unless the circles happen tQbe the same size. 156 ELEMENTARY ELECTRICITY Answer. Yes. There is a ring around the earthwhere the compass points north.… … Fig. 71. A Compass marked with Degrees as well as the Points of the Compass. Question 23. Is the magnetic north pole fixed? Anszver. No. In 1580 in London the needle pointedii° east of north, it gradually swung over till in 1657 itpointed true north, it kept on till in 1816 it pointed 240west of…
Electricity
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