INTERESTING FACTS

Press, Volume LXXIV, Issue 22515, 24 September 1938, Page 6 (Supplement)

INTERESTING FACTS

(Sent by 'Mate Perth) How Traffic Lights Work At- the Bank of New Zealand comer is the. purely automatic type of traffic lights.. You will notice that “contact" strips are laid across

the left-hand, side of the road. When any vehicle crosses, it is pressed down, and an impulse is registered. The controlling device “saves- up” these electric impulses. • What is a Plying Snake? The flying snake does not really fly, but as it makes its food of birds and frogs, it finds it very useful

to flatten itself out and move from tree to tree in order' to pounce on its food. This it does in such a swift and silent manner that it appears to fly. Why Have You Two Ryes?. If you have ever tried to hit -a tennis ball with one eye shut, you will know why you have two eyes.

One eye receives the picture, but it cannot tell how far away the different bits of the picture are. Willi two eyes you get a view from two slightly different angles. “Sunspots” Sunspots are to be seen as Utile black dots on the surface of the sun; They are black because they are only half as hot as the sun itself; but actually they are as

dazzling- as limelight, and nearly three times hotter than molten metal in a Bessemer blast furnace. They are so largo that this earth £ould fall into one of the larger ones and be lost as easily as a pebble in a pond.