Page 10 Advertisements Column 3

Taranaki Daily News, 18 June 1921, Page 10

“Another sunspot about 20,000 miles in diameter is now about central on the solar disc,” said Mr. Clement L. Wragge the other day. "That it indicates the aftermath of the great solar outburst that took place in May there is no doubt, and it proves, moreover, that the gigantic sun storm that occurred last month has rapidly filled up and become negative. There will doubtless be a s/nall auroral display in very high latitudes further south than Muequarrie Islands, but no auroral phenomenon can be expected to be visible in northern New Zealand. Given a sufficient potential of electric and magnetic energy ship’s compasses are always affected. A magnetic needle free to move must necessarily placed itself at an angle to a flow of electricity, be that flow along a wire or through the all-pervading ether. Vessels navigating these coasts are now immune from compass derangement, but should further solar outbursts occur, which will be duly notified, navigating officers should give all islands and rocks a wide berth.”