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PF Photo Contest - Magnet (12/3-12/9)

  1. Dec 3, 2016 #1

    ZapperZ

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    Magnet

    This week, the topic covers magnets. Your photo must have, as its main subject, something that has a magnet. This can be either a permanent magnet or an electromagnet. The photo need not be of a magnet itself. An example will be a loud speaker. So while it isn't obvious that there is a magnet in there, a quick look around will tell you that the speaker must have a magnet to work.
    Depending on the items you have in your photo, you may want to provide a brief explanation on its connection to the topic so that I don't have to chase you to justify your photo.

    Contest Rules:

    1. Any digital photo or digitally-scanned photo relevant to the theme will be accepted within the contest period. In case there's a gray area, or you're not sure if the picture is suitable, check with me first.

    2. Please resize your digital photo to no more than 800 x 600 or 600 x 800 pixels. You may also crop your picture if you wish. You are also allowed to adjust the brightness and contrast of your picture but these should not dramatically alter the look of the picture. But other than those, any form of picture editing or modification is not allowed. This is a photo contest, not a picture editing/special effect contest. You may add a watermark or your name/nickname to the photo for identification purposes.

    3. Upload your photos to any of the photo servers such as imageshack or photobucket. Then post it the relevant contest thread and link your picture using the img command. PM me if you do not know how.

    4. Only ONE picture per member per contest. Once a picture is posted, it cannot be changed other than a total withdrawl by that member from that week's photo contest. Exceptions will be made for modification to comply with the rules, such as resizing.

    5. At the end of the contest period, I will open a poll and every PF member can vote for the picture they like best.

    6. Note that in case we have a large number of entries, I will do the polling in more than one thread. If that's the case, you can vote in each of the polling threads. The photos will be assigned in the polling threads in the order they were submitted.

    7. The photo of the subject must be something that you took directly, not via in intermediary medium, and not taken by someone else. Unless otherwise noted, a photo of another photo, painting, print, etc. does not qualify.

    8. You can use a picture only once. Once it is used in a contest, it cannot be reused in another contest.

    9. Please post only pictures meant for submission in this thread. Photos not meant for submission must not be posted in the contest thread. Posting of more than one photos by a member may result in an automatic disqualification from the week's contest.

    Zz.
     
  2. jcsd
  3. Dec 3, 2016 #2

    nsaspook

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    26467543481_35defd5e26_c_d.jpg

    Ion beam analyzer and magnetic quadrapole focusing magnets with beamline removed during laser alignment.
     
  4. Dec 5, 2016 #3

    Andy Resnick

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    set%207_zpshvjeicml.jpg

    Magnetorheological fluid.
     
  5. Dec 5, 2016 #4
    31438008585_765664f954_c.jpg
    Old school.
     
  6. Dec 5, 2016 #5

    fresh_42

    Staff: Mentor

    I didn't know that the Öresund is so close to a N-S-straight. Your compass suggests that one could almost get through on a straight S-N-line whereas other maps suggest, that in this case one runs into Helsingör. Could explain a lot of history though ...
     
  7. Dec 5, 2016 #6
    I haven't thought about that before. Another thing is that Denmark and South Sweden are really close, and there are a couple of narrow straits in the area; during the Dano-Swedish War (1657–58) a Swedish army marched over the icy strait Little Belt onto Danish Funen.
     
  8. Dec 9, 2016 #7

    ZapperZ

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    Final day to submit your photo for this contest.

    Zz.
     
  9. Dec 10, 2016 #8

    epenguin

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    Lo tec - the hedgehog that keeps my paperclips. Ah, Humphrey Gilbert could not have foreseen the progress and inventions stemming from his Research Driven By Pure Curiosity Which Just Goes To Show (author's message contd. on p. 94...)

    sybjbq.jpg
     
    Last edited: Dec 10, 2016
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