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 43
thingis to try the experiment foryourselves.] Now when you go up theladder and hold C high up,as in Fig. 2, you will find that it is quite easyto support the weight W perhaps with one finger.You may have to ask some one to lift up the weightfor you in the first instance, but once lifted, it is… … THE STARTING-POINT, OUR EARTH 23 H SPRINGI.BALANCE greater—four times as great, as Newton tells us. It is not very strong even yet, but it is beginning to be felt. Here is a spring-balance with which we can measure the pull at C, and you will see that the spring is scarcely moved. If again I let C…
Astronomy -- Juvenile literature
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
