Recent content by properphysicist

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    Where Are Electron-Hole Pairs Created in Solar Cells?

    Thank-you echild. That answer is quite helpful.
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    Revisiting the Definition of Speed: Is Distance/Time Arbitrary?

    the above refers to your response to me and not to ultrapi1
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    Revisiting the Definition of Speed: Is Distance/Time Arbitrary?

    Everything you just said is exactly what I was trying to say. But I just seem to have upset you more than anything else. I wasn't trying to be condescending, I'm sorry you couldn't see that. Perhaps it is time to move on. Thank-you anyway.
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    Researching Physics: Mathematics, Complex Numbers & Science

    I'm considering three topics for an essay. My choice will depend on how much research material I can find for each. Can anyone please suggest sites for me to visit that relate to the following three titles: 1) The role of Mathematics in Physics. 2) Complex numbers in Physics. 3)...
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    Where Are Electron-Hole Pairs Created in Solar Cells?

    When power is generated in a solar cell, it is because of irradiance of radiation on a pn-junction. But in which part of the junction are the electron-hole pairs created? Is it just the depleted region or are they also created in the n- and p-type semiconductors? An engineer's response...
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    Zeno's Paradox Considered Federal Criminal Case

    chroot, yes you're right, it talks about discrete energies of bound particles. I assumed there was something about space in there too. perhaps I'm thinking of string theory. if that's also wrong then what does say space is discrete because I thought that was the case.
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    Revisiting the Definition of Speed: Is Distance/Time Arbitrary?

    To chroot, First of all, you are right. I am not an expert on relativity, I was talking to those who appear to be a bunch of kids pretending to know what they're talking about after reading some introductory text rather than studying the subject under a tutor. But I do have some...
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    Does the use of complex numbers in equations imply a relationship to time?

    It might be useful to say here that although something may exist in time, it's properties may not be a 'function' of time. For example, an isolated electron with a charge q may exist in time. But that charge remains constant for all time i.e. q it is not a function of time. This applies...
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    Zeno's Paradox Considered Federal Criminal Case

    According to Quantum Physics space is discrete, not continuous. i.e. there are a certain finite number of intervals of space between a and b each of which is either crossed or not. Space is discrete on a very small scale, therefore, macroscopically speaking, space appears to be continuous...
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    Revisiting the Definition of Speed: Is Distance/Time Arbitrary?

    I've been reading these replies and I am dumbfounded at the lack of understanding of our most fundamental principles of physics*. When an object moves through space it does so as a function of time. That means that distance moved depends on the amount of time elapsed. Now keeping that in...
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