Sparks Electrical News

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sparks
ELECTRICAL NEWS february 2016
This publication is distributed to electrical contractors,
wholesalers, distributors, OEMs, panel builders, Eskom,
mining electricians and consulting engineers (electrical)
as well as libraries, members of IESSA and public utilities.
people on the move
24
Editor:
Erika van Zyl
Advertising:
Carin Hannay
Production & layout:
Colin Mazibuko
Consultant:
Ian Jandrell PrEng, BSc(Eng), GDE, PhD, FSAIEE, MIEEE
Director:
Jenny Warwick
Publisher:
Karen Grant
Published monthly by:
Crown Publications cc
P O Box 140
Bedfordview, 2008
Tel: (011) 622-4770
Fax: (011) 615-6108
e-mail:
Website:
Printed by:
Tandym Print
The views expressed in this publication are not
necessarily those of the editor or the publisher.
Total 6 779 per month.
Bright Spark
Amystic square
Island hopping
Euler explained that it was not possible. He ex-
plained that with every visit youmake to the island
you cross two bridges, one going onto the island
and one when you leave it. However, there are
five bridges to the island, which is an odd number.
Therefore, in order to cross them all exactly once,
you have to either start or finish on the island.
There is also an odd number of bridges going to the
Northern shore, so the same argument proves that
you have to either start or finish on the Northern
shore. But the same argument also shows that you
have to start or finish on Southern shore, and on the
land to the left! So the puzzle cannot be solved.
"This diagram," said Jane to Jim, "is mystical. Each
of the squares contains a mystic symbol. For ex-
ample, the top right hand square shows a magical
arrowhead piercing the sky. There is one symbol
missing, but of course you can work out what it is if
you think hard enough."
Jimwas so confused by Jane's fanciful descrip-
tion that he failed to discover what the missing
symbol was. Can you do better?
MARCH FEATURES
Dean Lotter
divisional head, projects & solutions,
Johannesburg branch.
Myendhren Govender
business development manager,
Johannesburg branch.
Thabo Ngobeni
Sales representative,
Gauteng.
Elio Estanqueiro
Sales representative, export branch:
Mozambique and Malawi.
Magnet Garry Lumpe Imports BEKA Schréder
• Energy measurement and supply
• Tools of the trade
• Lighting
Buyers’guide
• Tools and instruments
Deadlines
• Advertising booking: 1 February 2016
• Editorial: 29 January 2016
• Advertisingmaterial: 8 February 2016