Recent content by Hendrik Boom

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    Graduate QFT & Entanglement: NRQT vs. PCT Transform

    Wouldn't the person doing both measurements then be the particle connecting both systems?
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    Is the Power of Two Sets Theorem Valid in Introductory Real Analysis?

    It looks like you are dealing with basic set theory here. A good, very readable, and fascinating exposition is Naive Set Theory by Halmos. Enjoy. I did; I found it mind-stretching. It's another old book, by the way.
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    Understanding Grids and Units in Computer Graphics and Physics Simulations

    OpenGL exists on a variety of platforms; DirectX is Microsoft only. So if you or your users might ever want to run your code on, say, Linux, you'd want to be using OpenGL. Vulkan is new. I'm not familiar with it, but I don't know how widely available it is.
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    Understanding Grids and Units in Computer Graphics and Physics Simulations

    He's an entertaining lecturer even though he just sits there, programs, and talks about what he's doing. You don't have to pay the ten dollars or so for access to his github archive of all the code; you can just type everything in off the video, though I've found myself wondering sometimes what...
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    Understanding Grids and Units in Computer Graphics and Physics Simulations

    If you really want to see what's going on, learn to program it yourself. I can recommend the excellent series "games with go", which is currently appearing on twitch, and is archived on youtube. https://gameswithgo.org/ It goes all the way from simple text adventures to full 3D graphics...
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    High School Why Do Some People Struggle with Math?

    Exactly right. Symbolic integration *is* a puzzle. Lots of puzzles. Treat them like that, see how many you can figure out. The ones posed in textbooks usually have solutions. The ones in real life can sometimes only be solved by numerical approximation.
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    Graduate Anyone here study quantum mechanics for fun?

    I think it is impossible to understand quantum mechanics without the mathematics that expresses it.
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    High School Why Do Some People Struggle with Math?

    "As a game" is the only way I've found to approach math. Otherwise the easier stuff gets too boring to hold my attention and the harder stuff too frustrating. But as a whole set of challenges there are always a few I can figure out. Finding those is a good route to learning. In a video game...
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    Mastering Double Angle Identities: Solving -2sin3θ+1=0

    It can't be an identity, because when I substitute 90 degrees for theta it comes out to - 8 - 6 + 1 = 0. What is it you are supposed to do? Solve for theta?
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    Undergrad Do dark matter and dark energy have an effect on the red shift?

    How can we know this much about dark energy? Are there relevant observations?
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    New Product Idea and Book Giveaway -- Who Wants it? (N95 straw)

    It may be that just focusing the blow directly on the flame significantly reduces the amount of germs reaching the cake, even without a filter.
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    Studying Class average for my physics mid-term was 8/30, Seriously

    I was once regrading an exam on which the students had to answer 5 out of 6 questions. The student had attempted six questions and completely flubbed one. That was the one the other grader had counted toward the total. The grader had completely ignored the correctly answered final question...
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    Studying Class average for my physics mid-term was 8/30, Seriously

    If it's a question of what an integral means,. I suggest you get a copy of a very old book, Mathematician's Delight, by Sawyer. It's has chapters explaining what various elementary mathematics subjects are about. Most of it is grade school stuff, but it does get into calculus. It won't teach...
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    High School Does anyone know how to measure the color of a Post-It note?

    Yes, lighting. Back in the 60's I was at a party where different parts of the room were illuminated with different colours of lights. My girlfriend had red eyes under a green light and green eyes under a red light. Complicated, indeed!
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    Undergrad Optics question: I need parallel illumination for a Contact Image Sensor (CIS)

    you might use two scanner bars for x and y coordinates. Or one with mirrors.