Science in Play.

Rodney and Otamatea Times, Waitemata and Kaipara Gazette, 12 June 1912, Page 6

Science in Play.

(From Magical Exp«rkneats by AJUHum-QoOft.

THE JUMPING COIN.

Choose a wine-glass of the conical form shown in the illustration, whose greatest diameter is a little larger than a florin. At the bottom of the glass now place a sixpence, and then, above it, your florin, which will fall only a little way into the glass; it will rest horizontally, like a kind of lid upon it. You may then safely announce to your assembled friends, -that, without touching either glass or coin, you have it in your power to

make the sixpence jump from its position. All you have to do is to breathe strongly on the florin : it will rotate, and so assume a vertical position, and at the same instant the compressed breath at the bottom of the glass will cause the sixpence to skip from its position quite a distance on the table, after which the florin will slowly resume its horizontal position.

One may sudceed in this experiment with a port-wine glass, but with the conical form it is still easier. /