Monday, March 13, 2017

SUNGAI MATI MENEBAR JALA


The 'sebarau' is a medium size freshwater fish much sought after by net casting (menjala).



Orang asli much depend on freshwater fishes but the catch now is low due to polluted waters.

This river near my kampong house used to be (say 40 years ago) deep and wide where ikan kaloi was abundant and crocodiles marauding. It is now knee-deep due to siltation and the water is always murky. Only small fishes are found. What a pity state we keep our ecology. 


Wednesday, March 1, 2017

WHEN LIGHTNING STRIKES


Figure below: Occurrence of lightning involving ground objects.
(Left) A close lightning flash striking a tree at a distance of 60 metres. (Top) Lightning"; the discharge is triggered by the presence of a tall tower. Lugano, Switzerland.