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User: paulthomas

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Comments · 305

  1. Distance is Key (was Re:Several watts?) on Surgery Using A Sunlight Scalpel · · Score: 1

    Consider for a moment that any regular light source radiates in all directions. This means that none of the rays are exactly parallel to each other. But the farther you travel from the source, the closer they get.

    The major difference between a light source on the earth, and the sun is that the sun is very far away, so the rays of the sun as they arrive here on earth are virtually parallel, very similar in nature to a laser beam. This is why you can focus the light of the sun with a magnifying glass and kill ants... all of the beams converge at the focal point. Try doing this with an LED or a lightbulb, and it won't work because you won't get a good focal point.

    -Paul

  2. RTF-Bill(was Re:Sharing....) on House Bill to Make File-Sharing an Automatic Felony · · Score: 1

    I would say RTFA... In this case RTFA doesn't quite apply because the article doesn't explain the bill. Before you contact your congress-people, I would suggest you read the bill so that you can form your own opinion instead of regurgitating the slanted (and dishonest by omission) views of Wired.

    The bill doesn't say you can't share, but rather that you can't share (over a network) files for which you do not own the copyright. This is less drastic than what I immediately thought after reading the /. summary (go figure), but it also has other poor implications: what about content for which you do not own the copyright but have a distribution agreement? There is also the idea that this puts copyright out of the civil court and into the criminal one.

    Here is the relevant text:

    18 (2) by adding at the end the following: ``For

    19 purposes of section 2319(b) of title 18, the placing

    20 of a copyrighted work, without the authorization of

    21 the copyright owner, on a computer network acces-

    22 sible to members of the public who are able to copy

    23 the work through such access shall be considered to

    24 be the distribution, during a 180-day period, of at

    And... do contact your reps when you feel you are informed.

  3. Re:I wondered the same thing... on NASA Test Shows Foam Could Be Culprit · · Score: 1

    Another huge factor: Gravity.

    When you are looking at the car/semi-truck example, you don't change the horizontal vector of the baseball with the gravity of the earth. (You do change the vertical vector, which in this case is inconsequential... in the case of the shuttle it is not).

    In the case of the shuttle you also have the acceleration due to gravity at apprx -9.8 meters per second (^2) the moment the tile detaches from the shuttle body, in addition to friction against the air.

    Anyone planning on using altitude as a counterpoint for my gravity argument should also recall that gravity is an inverse-square law and that distance change from source yields minimum change in force.

  4. K...rad on Linksys Releases GPLed Code for WRT54G · · Score: 1

    Well at least it wasn't k-rad, my hax0r friend.

  5. Re:'Physiological Adaptation' on Island Tribes Develop Superior Underwater Vision · · Score: 4, Insightful

    You are a little off.

    Evolution (macroevolution specifically) is the emergence of desirable traits for a specific environment due to differential reproductive success, more commonly known as natural selection.

    Natural Selection occurs when any or all of the rules of Hardy-Weinberg Equilibrium are broken.

    Essentially, when something is less fit for an environment it is less likely to live long enough to reproduce. What makes up these genetic differences to begin with include Mutations, Genetic Drift, and Migration, among other factors.


    Competition for limited resources is the key.

    A nice google search for your learning pleasure.