Light visible and invisible : a series of lectures delivered at the Royal Institution of Great Britain, at Christmas, 1896 (1897)
Thompson, Silvanus Phillips, 1851-1916, Royal Institution of Great Britain · New York : Macmillan · leaf 280
he tube F,G-I36 glows with the characteristic golden-green luminescence,except where it is shielded from the rays by the metalcross. With this tube I am able to show you a most interest-ing and novel experiment discovered only a few daysago by Professor Fleming. If you surround the tubewith a… … 256 LIGHT lect. coil causes the cross to rotate on itself, and at the sametime to grow smaller. To show the effect more con-veniently I have put the magnetising coil not aroundthe tube itself, but around an iron core beyond the endof the tube. So I am able to diminish or augment theeffect by simply…
Light · X-rays
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