Sunday, 25 May 2008

TAI = Think About It. TAI -TAI = ...?

Sorry for the crappiness of that title. But here are some things to think about...

"Let's not waste precious water!"

People say that we are wasting water and we should conserve water and everything. However, 'cos of global warming, icebergs are melting right? So do we have less water or more water? Yes, I mean generally water. But even if you talk about the availability of freshwater, the melting water is the purest of its kind right? SOOoooo....

And why don't all the fish get electrocuted when lightning strikes the sea? I have found an answer on WikiAnswers, though I can't quite understand it:

Good question.

Undoubtedly lightning can kill creatures in the sea, however, it seems unlikely that this is a frequent problem.

To understand why, let's look at cows in the field during a lightning storm. It has been discovered that if a tree surrounded by cows is struck by lightning, the cows extremely close to the tree may be killed regardless of how they are pointed, while farther away, only the cows pointed either towards or away from the tree will be killed--but the cows oriented on imaginary concentric circles around the tree will be okay.

Why would this be? Well, the lightning's high voltage disperses circularly from the point of the strike, decreasing evenly as it spreads outward. The cows pointing towards or away from the tree get the high voltage on two feet and a lower voltage on the other two, causing a large current right through the heart. If they are concentric with the tree, the current does not flow from front to back, thus causing very little current through the cows' hearts.

For fish it is about the same situation. Only some fish pointed to or from the strike and located close to the strike would be killed. The energy dispersal in the water is very rapid, and if a fish is more-or-less pointed concentrically to the strike...no problem. For the survivors...Hey! fried fish for lunch.


Happy thinking.

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