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Thread: Explain this!

  1. #1 Explain this! 
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    This is pretty neat
    http://www.youtube.com/watch?v=DPjDO...eature=related
    But can you explain it?[/url]


    Beyond Equations,

    Pritish
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  3. #2  
    Forum Radioactive Isotope MagiMaster's Avatar
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    Supersaturation is always fun. That block of ice is actually one big sodium acetate crystal.


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    Forum Ph.D. william's Avatar
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    That's really neat! Thanks for the link.


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    "... the polhode rolls without slipping on the herpolhode lying in the invariable plane."
    ~Footnote in Goldstein's Mechanics, 3rd ed. p. 202
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  5. #4  
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    apparently either the oils your hand have some effect on the ice or just the action of touching it does. I would assume it was the former.
    Time is a great teacher, but unfortunately it kills all its pupils ... - Louis Hector Berlioz
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  6. #5  
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    When the chemical is made, does it store potential energy that is then released in this reaction in order to form the crystal? I was mediocre at chemistry........so I'm not sure.
    Of all the wonders in the universe, none is likely more fascinating and complicated than human nature.

    "Two things are infinite: the universe and human stupidity; and I'm not sure about the universe."

    "Great spirits have always found violent opposition from mediocrities. The latter cannot understand it when a man does not thoughtlessly submit to hereditary prejudices but honestly and courageously uses his intelligence"

    -Einstein

    http://boinc.berkeley.edu/download.php

    Use your computing strength for science!
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  7. #6 Re: Explain this! 
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    Quote Originally Posted by PritishKamat
    This is pretty neat
    http://www.youtube.com/watch?v=DPjDO...eature=related
    But can you explain it?[/url]
    I actually did that experiment and I have some of the sodium acetate left. It gets really hot, the more you put into the container the more heat is generated. It will actually steam, and would burn your sensitive skin. I weld so my hands do not burn easily.

    That video is the video, that the guy I buy from, shows before you buy it. It does work. In school my teacher did copper sulfate.

    The reason copper sulfate is so wild, is that when it crystallizes, it proves that all the copper sulfate is out of solution and in the crystal. Because there is pristine water, and a giant blue crystal in the beaker, the next day when you come into class.

    You just have to boil water and over saturate compared to when it is cold. While it is hot it can absorb more crystal. Later as it cools, it can no longer hold that much crystal in solution.

    Any thing can cause the crystal to fall out of solution. A sudden change in temperature. Stealing just a little bit of the water from the solution. Adding a salt that steals water from the solution.

    Definitely a cool experiment. Rock candy is made from sugar like that.

    Sincerely,


    William McCormick
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  8. #7  
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    Quote Originally Posted by Cold Fusion
    When the chemical is made, does it store potential energy that is then released in this reaction in order to form the crystal? I was mediocre at chemistry........so I'm not sure.
    You get state change energy released. When the substance goes from a liquid to a solid, it has to release energy. Heat is usually what is released.

    Just like inside an air-conditioner condenser. In the condenser the hot gases are compressed in the condenser coils, turning the gas into a liquid, releasing heat, into the copper coils that are usually coated in aluminum fins in most residential systems.
    Some larger systems use water to cool the condenser. Anything from circulated ground well water. To cooling towers. In areas that have winters, the towers usually have to be drained.

    You can also make ice with snow. If you put water into a tube surrounded by alcohol, and you dump snow into the alcohol, it will cause the tube of water to freeze. It is liquid state change principles.

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    William McCormick
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  9. #8  
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    Lovely phenomenon, isn't it?
    Beyond Equations,

    Pritish
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  10. #9  
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    Quote Originally Posted by PritishKamat
    Lovely phenomenon, isn't it?
    God is great in my opinion. He made all this stuff, that all the nations on earth battle over, battle against, battle for. Yet not one human is up to what God has done. Remarkable.

    Check out this about water.

    http://www.Rockwelder.com/Chemicals/...hermostat.html

    Omniscience!

    The fellow writing the book. Mentions that the only liquid, "water" floats to the surface or becomes less dense.

    He may have been referring to liquids at room temperature. Or was just not aware of the metal in type set that also expands or becomes less dense upon cooling.

    That metal Antimony was once used in plumbing in solder many years ago, and they had trouble with it and removed it, or so I was told. They claimed that it was causing a radio active emission. I have no proof or knowledge of this, other then one professors claim, and some other individuals who acknowledged a problem to me.

    I was surprised to see it used again in plumbing in the new solders. Because of this. They may have found ways to stop any problems they were having with it. Now many of the solders have nickle or silver to stabilize them. So it may not be a problem anymore.


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    William McCormick
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  11. #10  
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    That video is great!! I showed so many people!! thanks.

    Quote Originally Posted by William McCormick
    Quote Originally Posted by PritishKamat
    Lovely phenomenon, isn't it?
    God is great in my opinion. He made all this stuff, that all the nations on earth battle over, battle against, battle for. Yet not one human is up to what God has done. Remarkable.
    Whats a god?
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  12. #11  
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    Quote Originally Posted by Jimsmowen
    That video is great!! I showed so many people!! thanks.

    Quote Originally Posted by William McCormick
    Quote Originally Posted by PritishKamat
    Lovely phenomenon, isn't it?
    God is great in my opinion. He made all this stuff, that all the nations on earth battle over, battle against, battle for. Yet not one human is up to what God has done. Remarkable.
    Whats a god?
    God is the whole ball of wax.

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    William McCormick
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  13. #12  
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    Nicely put!
    Beyond Equations,

    Pritish
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