Recent content by Andrew Wright

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    B Confusion about division by zero in sets

    So the confusion here is that division by zero is often said to be undefined. So whereas, the point (0,0) certainly appears in the set of values where x=y, does the point (0,0) appear in the set of values where 1=y/x. Why or why not? In other words are the set of points where x=y the same as...
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    B Time Dilation & Bosons: Decay Rate Changes?

    I was thinking of light slowing down when it passes through a medium. People have told me that this is due to interactions that happen to bend and slow the light. It feels odd that a bunch of particle interactions happen to make light refract like a water wave. It always felt like it should not...
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    B Time Dilation & Bosons: Decay Rate Changes?

    Hi, It is easy to find discussions about time dilation and muon Half-Life. Is it meaningful to discuss whether bosons capable of pair production can have their decay rate changed if they pass through material?
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    Viruses become less deadly over time?

    I can provide a counter argument to the original suggestion that there is survival pressure for a virus to keep the host alive so the virus can reproduce. Surely there would be viruses that spread more easily during and after the decay of the host? Humans treat their dead with more attention...
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    Viruses become less deadly over time?

    You could argue that social isolation during experience of Covid symptoms would cause all viruses that make humans cough have an increased survival pressure not to produce symptoms. Perhaps viruses can learn to "hide"? In fact I read somewhere that Coronavirus evolved a very sophisticated...
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    Medical Exploring Sensations in the Visual Cortex for the Blind

    One answer I got online is that someone described seeing the same thing that I am able to see with my elbow. In many ways this is quite thought provoking.
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    Medical Exploring Sensations in the Visual Cortex for the Blind

    I have been reading about electrode implants into the visual cortex but this seems far more invasive and perhaps undesirable.
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    Medical Exploring Sensations in the Visual Cortex for the Blind

    Hi, Are the any documented examples of descriptions of a subject's sensations during stimulation of the visual cortex, when given by people born blind? This is something I am curious about after hearing a creative musical piece sung by a disabled child. I am assuming that many people born...
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    B Wavelength of a laser beam emerging from a prism

    Summary:: If you send a laser beam through a prism, can you measure any shift in wavelength at the other side of it? This sounds like a high school experiment and the concept is simple. I feel the laser should emerge monochromatic and at the same wavelength it went in. Do you get this result...
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    I Maximum separation on an infinite line

    I also forgot the mathematics of taylor series years ago. I am not lazy, but I had my chance as an academic and I blew it. I write computer software these days. Any way, your thoughts are much apppreciated.
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    I Maximum separation on an infinite line

    It just felt for a minute that projective geometry might let me graph things that converge at infinity and so "see" a limit converging as it goes to infinity. I have to be honest, I don't get projective geometry.
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    I Maximum separation on an infinite line

    I went this far so I demand satisfaction. Is it impossible to use projective geometry and allow graphing of points outside reals (with infinite values like our friend Aleph) to render any solutuon to the convergence of Taylor series in a manner that is mathematically useful? Why is this and can...
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    I Maximum separation on an infinite line

    interesting...
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    I Maximum separation on an infinite line

    i can honestly say a best guess sometimes popped out of using the largest number my calculator could generate for infinity and then rounding it. Also, workings were sparse :)
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