HOW TO PROVE THE EARTH'S MOTION

Ashburton Guardian, Volume VII, Issue 1826, 27 April 1888, Page 2

HOW TO PROVE THE EARTH'S MOTION

_ « . Anyone oan prova tho rotary njotlon of the earth on Its oxia by a simple experiment, foe making which no ednc\tlonal journal of jVaukfort, Germany, gives tho following dlreotlons ; — "Tako ft good-elz^d bow), fill It nearly full of water, and place It upon the floor of a room which Is not expoaod to ehakiug or jarring from tho Htreefc. *' Sprinkle over tbo eurfaco of the water a coating of lyoopodium powdor — a white Bubfltance)whieh can be obtalnnd at any apothecary's. Then, upon the Barfaco of thlo cootlug of powder, msko with powdered clnrcoal a straight, black lino, I ai»y ono inch or two inches m langth, •' Ilßvirig made this little black mark with tho charcoal powder on the aurfnos of the contonts of tho bowl, lay duwn upon the fl )or, close to the bowl, a stick or Qomo olhor straight object, so that it Bhall bo exactly parallel with tho mark. If the line happens to be parallel with a crapk In tho il >or or with any stationary ' object iq oie room, thla will aei vo rb well. "Loavo tho bowl •andiatarb'.rd far a few hoan and thon obaarva tha ponition of the black mark with reference to the object that it was parallel with, " It will be found to have moved about, and to h'iyo moved from oast to weot — thit io to Bay, m tho dirootlon opposite to that of the movement gi (,l)o earth ' on Ito cxls. "The earth, m simply revolving, haa carried the water and everything else m the bowl around wMi it, but the powder op tho oijrf-iOG has been left behind a little. I'he lino yil} always be found to have moved from east to west, which la perfectly good proof that everything else has moved the other way," r