A voyage in space; a course of six lectures "adapted to a juvenile auditory" delivered at the Royal Institution at Xmas 1913 (1915)
Turner, Herbert Hall, 1861-1930 · London Society for Promoting Christian Knowledge · leaf 193
AT REST Fig. 46. … SPINNING Fig- 47- first do one or two more experiments. In Fig. 46is a hoop, or rather a pair of hoops, which when atrest are circular, but flatten down as in Fig. 47 whenthey are spun, because the outer portions AB tend tofly away from the axis; you can easily see that inthe second figure they are…
Astronomy -- Juvenile literature
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
