Recent Changes

Tuesday, August 2

  1. 4:24 pm
  2. page home edited ... Scribe Post Expectations: Each member of the lab group should make either a significant contri…
    ...
    Scribe Post Expectations: Each member of the lab group should make either a significant contribution or a constructive modification to the day's post.
    Why a Class Wiki?

    (view changes)
    4:23 pm

Tuesday, March 23

  1. page Jake's How Things Work Page edited ... TV screens? . . On every ... is seen. http://www.youtube.com/watch?v=qq25MVJ0U7c&…
    ...
    TV screens?
    .

    .
    On every
    ...
    is seen.
    http://www.youtube.com/watch?v=qq25MVJ0U7c&feature=related

    http://www.youtube.com/watch?v=qq25MVJ0U7c&feature=related

    A Short clip demonstrating how magnets give residual damage to a TV screen.
    Image 1
    {file:///C:/Users/Jake/AppData/Local/Temp/moz-screenshot-12.png} {file:///C:/Users/Jake/AppData/Local/Temp/moz-screenshot-13.png} {file:///C:%5CUsers%5CJake%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_image004.jpg} {http://www.beoworld.org/assets/thumbnails/degaussing.jpg}
    The distorted effects after a magnet has done its damage on a television screen, blue and purple phosphor have been disproportionately represented because of the V-divergence of the magnet
    Image 2
    {http://www.thenakedscientists.com/HTML/uploads/RTEmagicC_MagnetTV-beam_magnet.png.png}
    ...
    the magnet.
    http://www.thenakedscientists.com/HTML/content/kitchenscience/exp/magnets-and-tvs/
    A

    External link-
    http://www.thenakedscientists.com/HTML/content/kitchenscience/exp/magnets-and-tvs/
    A
    cool experiment,
    ...
    of monitors/screens.
    Work cited-
    http://www.beoworld.org/assets/thumbnails/degaussing.jpg
    http://www.thenakedscientists.com/HTML/content/kitchenscience/exp/magnets-and-tvs/
    http://www.brynmawr.edu/physics/MNoel/bop/ForSchools/WriteUpLinks/MagnetTV/MagnetTV.htm

    (view changes)
    5:23 pm
  2. page Jake's How Things Work Page edited Type Why do magnets adversely affect TV screens? . On every TV, in the content front part o…
    TypeWhy do magnets adversely affect TV screens?
    . On every TV,
    in the contentfront part of your page here.the monitor, there is a material, phosphor. When hit by an electron, the phosphor lights up. This, in large quantities, becomes scanned across the entire screen. This light beam fades in and out at the correct intervals so that a certain picture, hopefully the desired one, shows up on the screen. By using different types of Phosphor, a different color image becomes displayed on the screen. So why do magnets destroy TVs? The magnet, in being placed on the TV, creates an abyss in the center of the beam of electrons, causing a v-shape, where the center is where the magnet is, leading to an overall chaotic display because the correct display is being altered by the different location of the electron beam. This can also lead to the Phosphor changing color, making for the oft-seen blue/purple or green/red quandary where the seemingly opposite color is seen.
    http://www.youtube.com/watch?v=qq25MVJ0U7c&feature=related
    A Short clip demonstrating how magnets give residual damage to a TV screen.
    {file:///C:/Users/Jake/AppData/Local/Temp/moz-screenshot-12.png} {file:///C:/Users/Jake/AppData/Local/Temp/moz-screenshot-13.png} {file:///C:%5CUsers%5CJake%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_image004.jpg} {http://www.beoworld.org/assets/thumbnails/degaussing.jpg}
    The distorted effects after a magnet has done its damage on a television screen, blue and purple phosphor have been disproportionately represented because of the V-divergence of the magnet
    {http://www.thenakedscientists.com/HTML/uploads/RTEmagicC_MagnetTV-beam_magnet.png.png}
    A display of how the magnet directly affects on individual electron on the beam which then spreads outward, creating the V shape because the middle is being deflected outward by the magnet.
    http://www.thenakedscientists.com/HTML/content/kitchenscience/exp/magnets-and-tvs/
    A cool experiment, which shows you step by step and scientifically how a magnet adversely affects a television screen, using the Cathode Ray Tube rule of monitors/screens.

    (view changes)
    5:22 pm

Thursday, March 18

  1. page Vibrations & Waves edited ... The chart above and the equations listed sums up everything we learned in class today. March …
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    The chart above and the equations listed sums up everything we learned in class today.
    March 18th, 2010
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    constant or K.k. The spring
    ...
    learned that {http://www.sitmo.com/gg/latex/latex2png.2.php?z=100&eq=%5Cfrac%7B1%7D%7B2%7Dkx%5E2%20} PE= {http://www.sitmo.com/gg/latex/latex2png.2.php?z=100&eq=%5Cfrac%7B1%7D%7B2%7Dkx%5E2%20} , where x is the distance squared. Then we had a QOD asking what the velocity would be of a cart weighing 0.5kg, and we has to use Conservation of energy and make PE=KE then solve for velocity.
    Force (N)
    Stretch (m)
    (view changes)
    3:21 pm
  2. page Vibrations & Waves edited ... The chart above and the equations listed sums up everything we learned in class today. March …
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    The chart above and the equations listed sums up everything we learned in class today.
    March 18th, 2010
    ...
    also learned that {http://www.sitmo.com/gg/latex/latex2png.2.php?z=100&eq=%5Cfrac%7B1%7D%7B2%7Dkx%5E2%20}
    Force (N)
    Stretch (m)
    (view changes)
    3:16 pm
  3. page Vibrations & Waves edited ... The chart above and the equations listed sums up everything we learned in class today. March …
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    The chart above and the equations listed sums up everything we learned in class today.
    March 18th, 2010
    ...
    case if 30N/m. {http://www.sitmo.com/gg/latex/latex2png.2.php?z=100&eq=30%5Cfrac%7BN%7D%7Bm%7D} . We also learned
    Force (N)
    Stretch (m)
    (view changes)
    2:37 pm
  4. page Vibrations & Waves edited ... The chart above and the equations listed sums up everything we learned in class today. March …
    ...
    The chart above and the equations listed sums up everything we learned in class today.
    March 18th, 2010
    ...
    a demo. We had aThe slope of the line the data makes is called the spring constant or K. The spring constant in this case if 30N/m.
    Force (N)
    Stretch (m)
    (view changes)
    2:35 pm
  5. page Vibrations & Waves edited ... >FREGUENCY (F) = number of events/ amount of time(unit=cycles/second or HZ(Hertz)) The cha…
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    >FREGUENCY (F) = number of events/ amount of time(unit=cycles/second or HZ(Hertz))
    The chart above and the equations listed sums up everything we learned in class today.
    March 18th, 2010
    Today we went to the science computer lab to work on our first webassign, but before that we had a demo. We had a
    Force (N)
    Stretch (m)
    0.0N
    0.0m
    0.5N
    0.01m
    2.0N
    0.06m
    10.0N
    0.3m
    12.0N
    0.36m

    (view changes)
    2:31 pm
  6. page How Things Work e-Book edited ... How are Aurora Borealis formed?(missy) How does the Giant drop work? (Nick) xxxxx How do H…
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    How are Aurora Borealis formed?(missy)
    How does the Giant drop work? (Nick)
    xxxxxHow do Hummingbird's wings rotate at the extreme rapid rates they do?(Jake)xxxxx
    xxxxx
    Chapter 5: Applications in Technology
    (view changes)
    10:50 am

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