Gavran's latest activity
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GAnd... Version 2. Now I'm 99.9% sure it doesn't work. Although it's hard to show in a photo. The cable ties are a nice easy solution...
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GHere is Martin Gardner’s solution for 7 which also is a solution for 6 along side his original solution for 6. [/SPOILER]
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GI tested "solution" #6 with real pens and can confirm that they don't all touch each other. There's a small, visible gap. And I can...
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GGavran replied to the thread B Six Pencil Puzzle.No, I did not. Sorry for the spoiler bar. By the way, there is another solution which can also be found by using Google. In my...
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GGavran replied to the thread I Fourier transforms in Hilbert Space.See https://en.wikipedia.org/wiki/Rigged_Hilbert_space.
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GGavran replied to the thread B Six Pencil Puzzle.This is a three dimensional problem. There is no solution if all six pencils occupy only one layer. The source...
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GGavran replied to the thread I Confused by proof in Hocking and Young.This is trivial. There are two closed sets ## A ## and ## B ## and they will always be closed, no matter where they are placed, in ## H...
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GGavran reacted to renormalize's post in the thread The sign of the change in potential with
Informative.
Presumably its the electric field ##\vec{E}=-\nabla V##, whose magnitude is sometimes referred to as electric field strength. -
GGavran replied to the thread I Problem in understanding instantaneous velocity.I agree that the limit of those lines is the tangent line, but I do not agree with your statement in the post #9. That is like stating...
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GGavran reacted to Mike_bb's post in the thread I Problem in understanding instantaneous velocity with
Like.
Hello! I have difficulty in understanding an instantaneous velocity. Some books say that average velocity more and more approximate... -
GGavran replied to the thread The sign of the change in potential.The result ## -2k\pi\sigma x ## is a correct result, but the method in the original post is not correct. ##...
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GGavran replied to the thread I Problem in understanding instantaneous velocity.By “it never becomes the tangent line” in the post #10 I mean that the secant line never becomes the tangent line.
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GGavran replied to the thread I Problem in understanding instantaneous velocity.No, it does not. The limit means that the secant line approaches the tangent line, but it never becomes the tangent line.
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GThanks a lot guys. I got there in the end, thanks to all of you, and a bit of extra help from Maths is Fun. (Flip AEB on its head, as...
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GGavran replied to the thread Geometry: Similar Shapes.The equation which describes both options should be written in the next form $$ \frac{8+x}{12+3}=\left(\frac{8}{12}\right)^{\pm1} $$.
