Theory is when you know something, but it doesn’t work. Practice is when something works, but you don’t know why. Programmers combine theory and practice: Nothing works and they don’t know why.
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8h
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asked | Can SSML simulate people talking over each other? |
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11h
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asked | How to get relative character position in SpeechSynthesizer.SpeakProgress event? |
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14h
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awarded | Notable Question |
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1d
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answered | Does anyone know if AVSpeechUtterance supports SSML? |
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1d
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comment |
AVSpeechSynthesizer detect when the speech is finished for me, my delegate methods are not being called. I am not running any graphical UI. |
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Jul
16 |
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asked | Taking partial derivatives with dependent variables |
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Jul
12 |
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comment |
Question on special relativity Oh I think I see it how they are not cancelling if we use (1) even if y=y' and z=z'. I had to write on a piece of paper. But... if we assume a plane wave that is travelling in the x (and x') direction, then y, y', z, z' are all 0... |
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Jul
12 |
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comment |
Question on special relativity Sorry w.r.t. your second comment (I agree with the equation in that comment) I did not get why I cannot cancel out the y with y' and z with z' using equation 1. After all y = y' and z = z' and that's what is used to cancel them out in the wikipedia derivation. Could you perhaps post a derivation using equation 1 as part of your answer? That would convince me that the two equations give the same result. thanks. |
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Jul
12 |
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comment |
Question on special relativity If you include the fact that the expressions equate to 0 then yes 1 and 2 are equivalent but in derivations of the Lorentz transform the equal to zero fact is not used e.g., see en.wikipedia.org/wiki/…. If I use the method there and use my equation 1 instead of 2 (as starting point), I get very different results. I get D - B = 1 and A - C = 1. Try it. |
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Jul
12 |
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comment |
Question on special relativity It doesn't matter what you call assumption 2 (Euclidean vs. Minkowski vs Charlie) as its used by both (1) and (2) |
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Jul
12 |
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asked | Question on special relativity |
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Jul
11 |
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answered | Derive Minkowski metric from Lorentz transformation |
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Jul
11 |
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asked | Derive Minkowski metric from Lorentz transformation |
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Jul
10 |
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revised |
Why the $E$ of the time component 4-momentum is the total energy and not another? added 165 characters in body |
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Jul
10 |
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answered | Why the $E$ of the time component 4-momentum is the total energy and not another? |
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Jul
8 |
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awarded | Popular Question |
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Jul
5 |
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asked | How to generate synthetic text data for LLM fine tuning? |
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Jun
26 |
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awarded | Popular Question |
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Jun
21 |
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revised |
What if I do not reprogram the computer after changing car battery? added 83 characters in body |
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Jun
21 |
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comment |
What if I do not reprogram the computer after changing car battery? to answer your question - No. Please see the linked video for what I mean. |