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FX

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Posts posted by FX

  1. Why would you say that?

     

    Observing nature can lead to an understanding of what is happening. We may even determine how nature works. Is it just a linguistic problem when we ask 'why'? Examples abound, but sticking with magnets, asking why they attract each other is certainly valid.

  2. From http://www.coolmagnetman.com/maghow.htm

     

    Only when you play with (observe) them will you begin to understand how they work. This is the stuff great scientific pioneers did, like Faraday, Lenz, Gilbert, Henry and Fleming.

     

    What we can find out this way, is some of the basics of magnetism, like:

     

    * the north pole of the magnet points to the geomagnetic north pole (a south magnetic pole) located in Canada above the Arctic Circle.

    * north poles repel north poles

    * south poles repel south poles

    * north poles attract south poles

    * south poles attract north poles

    * the force of attraction or repulsion varies inversely with the distance squared

    * the strength of a magnet varies at different locations on the magnet

    * magnets are strongest at their poles

    * magnets strongly attract steel, iron, nickel, cobalt, gadolinium

    * magnets slightly attract liquid oxygen and other materials

    * magnets slightly repel water, carbon and boron

     

    and so on

     

    Now, the fun begins. We start to ask the question, "Why?" This is what scientists continually do - try to figure out why things behave the way they do. Once we figure that out, we have a better handle on how to apply them to make useful tools for us, right?

     

    Let me share with you some of what is known about how magnets work. All of the questions have NOT been answered, perhaps you will help answer some of them. So, some of what is known are simply observations, some are guesses, but a lot has been figured out.

     

    Emphasis mine.

  3. If the nail doesn't stay in the wood, you can be sure the scientific question will be 'why'? Asking why is the essential question, when faced with something that can't be explained. Or something that CAN be explained, but you don't understand yet.

     

    Returning to the nail that won't stay. After 'why' has been answered, the next question might be something like, "Well how can we fix that?".

  4. Maybe you are confused. Asking why, when you observe something in physics, is a very good question. One that is still being asked about magnetism. It's never silly to ask why. In regards to physics.

     

    What is silly, is thinking you don't need to answer the question.

  5. I went to Google images looking for airplane view of the flooding. Found this!

     

    Some of Brisbane's trendiest suburbs have been revealed as the most prone to flooding.

     

    Brisbane City Council this morning released new computerised mapping which showed 28,651 properties would suffer from water flowing through their yards or houses in a one-in-50-year flood, similar to those in May of this year.

    October 30, 2009!

    http://www.brisbanetimes.com.au/queensland/brisbanes-most-floodprone-suburbs-revealed-20091030-hoym.html

     

    What? What the hell?

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