[+] -7 points 3 months ago

That's moire.

Literally: wavy visual pattern that happens when two different grid or line layers overlap, when a camera films a fine design, or in a special rippled fabric.

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  • [–] 11 points 3 months ago

    CDs and DVDs have rainbow reflections because the “parallel” (parallel on the scale of the wavelength of light) rows of pits create a diffraction grating.

    The rings in the picture are Newton’s Rings, as pointed out in comments. There are a different set of rings for each wavelength of light and since they don’t all line up you get this rainbow effect.

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  • [+] -6 points 3 months ago (2 children)

    I don't know what it's called, but I can tell you it's caused by air being trapped underneath the screen protector. Whoever put it on didn't know to start in the middle and apply pressure outward so you can wipe bubbles toward the edge to remove them.

    Or, they were doing a hundred of them and knew they wouldn't have to look at any of them again, so they just threw it on there as fast as they could.

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  • [–] 87 points 3 months ago (2 children)

    It's not moire...

    These are Newtons rings, a different type of optical interference pattern.

    It occurs when two transparent sources reflect light in contact.

    You get it frequently when trying to scan transparencies using a flatbed scanner too.

    Here: Newtons Rings Wikipedia

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  • [–] -1 points 3 months ago

    The meaning of PERQUISITE is a privilege, gain, or profit incidental to regular salary or wages; especially : one expected or promised.

    Did you mean prerequisite?

    Regardless, not everything is bound by mortality. Or even decay, if you generalize to nonliving things. A rock will remain a rock, unless acted upon by an outside force. But at most scales, everything is experiencing the movement of energy around the universe from the original big bang, and at different scales you see this energy move in cycles, like plants and animals being born and dying, or a comet orbiting through the solar system.

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  • [–] 5 points 3 months ago

    Entropy. The second law of thermodynamics. Things naturally change from a more-ordered state into a less-ordered state.

    Energy is required to reverse this process. All the processes you describe are putting things into a more-ordered state and thus, require energy in some form.

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