Recent content by CraigD

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    Graduate Schrodinger's cat filmed experiment

    If you believe in the many universe interpretation, then by definition animals where hurt during the experiment, just not in the universe you currently occupy.
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    Graduate Higgs Particles: Big Mass, Bigger Detection Challenge?

    High mass means they decay very fast as well, but pam is correct, that the energy level associated with that mass is very hard to come by.
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    High School Physics Fun at Home: Share Your Ideas!

    Perhaps I should have said science at home, or lab at home. But this is what I was asking about, I like doing stuff like this, and was just taking a temperature of were the community is.
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    High School Physics Fun at Home: Share Your Ideas!

    Those Physics @ Home are great at explaining certain things at home, but I am interested in what people are actually doing, not just fun things like I made, but what about real physics at home?
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    High School Physics Fun at Home: Share Your Ideas!

    I'm sure everyone here loves to do physics at home. This weekend I made a cheap http://www.cymek.com/?q=node/109", but I want to know what other physics related activities people are doing at home.
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    Graduate Effective Surface Area: Calculating & Understanding

    What is the context of the question? You can assume that the MBR has an effective surface area of the entire universe, but that the surface area of the emitting body would be the size of the universe when the radiation was first released.
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    Undergrad How to detremine the lifetime of a LED

    Just turn it on and wait for it to fail. CraigD, AMInstP www.cymek.com P.S. you may want to bring a six pack.
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    High School Levitation of objects by a magnetic field ?

    A nother way to combat the stability problem is to spin the floating magnet. CraigD, AMInstP www.cymek.com
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    High School Levitation of objects by a magnetic field ?

    Opposites attract, likes repell. That is each magnetic field has a North[N] and South[S] pole, two magnets connect NS or SN. If you try to make a like connection, SS or NN they repel each other, that is if they are laying on a table and you push one magnet towards the other, the other will...
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    Graduate Is time in essence - constant?

    That may not be the best way to state that. You are correct, on this. What I meant when I said in a vacuum is traveling in a straight line without external forces acting on it. CraigD, AMInstP www.cymek.com
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    Graduate Is time in essence - constant?

    Time is not constant. Only the speed of light is constant in a vaccumm. The acceleration in this case is the acceleration in our frame of reference. If we changed frames we would change the rate of acceleration that we observe. Another point here is that the time isn't changing, but the...
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    High School What Causes Magnetism and Where Does Its Energy Come From?

    Show me a monopole magnet and I will agree. CraigD, AMInstP www.cymek.com
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    High School Can we travel faster than the speed of light?

    Not hogwash, just mis-stated. You can observe quasars moving away from us at 2c. The problem here is that they are not actually moving through space at 2c, but the space between us and it is expanding at a rate equal to 2c. Because space has no mass, it can expand at any rate; i.e. 2c. To...
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    High School What Causes Magnetism and Where Does Its Energy Come From?

    Magnatism is a fundamental force, that is, to say it just is. CraigD, AMInstP www.cymek.com
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    Undergrad What is the accepted diameter of the universe?

    Any estimate of the diameter of the universe is going to be pretty rough. What is more concrete is the diameter of the visable universe. This then opens up a philisophical debate on the subject of what is the universe. Most models of the size of the universe are derived from the starting...