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anterian

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Posts posted by anterian

  1. These events always puzzle me, as related they are not possible. If a person in freely suspended in water, (particularly chlorinated water), they cannot be electrocuted by dropping a live mains feed into the water.

    Electricity flows from "live" to "ground" (neutral), it will follow the path of least resistance, or using Kirchoff's laws, the paths of least resistance.

    If a twin cable with exposed ends is dropped into a conductive fluid, the path of least resistance is the half a centimetre or so of water seperating the two wires. If you managed to just immerse the live wire only in the swimming pool then the current will flow to ground via the water, the amount which actually flows through a swimmer would be minute.

    Try it yourself, strip the insulation off the end of a twin cable, connect it to the mains supply and dip the bare ends into a basin of salt water, you will see violent activity at the cut end, green fumes and possibly a flame. Put a fish in the water and it will get excited by the activity, but not killed.

    Additionally with a healthy person 220v is painful but not lethal, otherwise I would not be writing this :) . What kills is the shock and duration of the shock, just as a loud bang can shock some people to death. An ELCB or RCCB would have prevented this, when I rewired my Thai house I fitted an RCCB at the input to my distribution box, I can safely stick my finger into any mains socket. The RCCB trips at 30 mA, enough to make you say "ouch". if I had chosen a 5 mA trip I would not even notice before it tripped.

  2. What i really don't understand is how someone who evolved to be a human still manage to think shouting random words theyve heard on the TV in english constitutes a conversation?

    when i went to many other 3rd world countries. people would speak to me in their own language that i did not understand+sign language or they'd get out the appropriate 2-3words of english.. yet in thailand, they say thai words mixed with non-sense english word and expect you to understand

    When you read the "English" words on many T-shirts it is clear that any random collection of misspelt words are acceptable to a Thai. Equally I have seen many crude comments displayed on T-shirts being worn by 5 year old children.

  3. There's a need some basic geography lessons.

    How does an earthquake 50km off Padang Sumatra propagate a wave that could come anywhere near the coast of Thailand?

    :)

    Some physics lessons would help also :D Someone earlier asked what happens if two tsunami waves meet going in opposite directions. Well on a large scale nothing, they would simply pass through each other unaffected. Find a small pond and toss two pebbles in some distance apart and you will see what I mean. On a local scale it will depend upon the phase relationship between the two waves, if in phase you will get constructive reinforcement, if out of phase then destructive cancellation, as such waves are unlikely to be totally in phase or out of phase, the result will be somewhere inbetween.

  4. This seems to me like a moral victory to the Reds, they can say to their supporters that the government is using every means available to prevent them from holding peaceful rallies. They, themselves are peacefully abiding by the law, even if being unfairly used by a government which is running scared.

  5. I think he intentionally swam into the duct then went into panic and drowned when he found it was not so easy to back out.

    As a child of 14 I was a keen daily swimmer and was interested in underwater endurance, I would frequently swim down to the extraction duct and hook my finger in the grill to stay submerged. The reason I had to hook my finger was there was insufficient suction to hold me down otherwise. Think about it, it would not be safe to have suction strong enough to suck a person down a duct, it would then be strong enough to hold a person against the grill.

    The boy died from childish curiosity and incompetent maintenance.

  6. I usually travel Gulf, I find the stop over just about right for a coffee, smoke and shopping. Their duty free is the cheapest I have met and Bahrein is a nice clean terminal. You do get the odd Arab "sheik" who gets drunk and noisy but the stewards seem to know how to deal with them, I would love to know what they say :)

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