I c it!

Comments

• Triumph@fedia.io ⁨16⁩ ⁨hours⁩ ago

  The reason this happens is because the tiny gaps between the leaves act as lenses, like in a pinhole camera.

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  • Wolf314159@startrek.website ⁨11⁩ ⁨hours⁩ ago

    A pinhole camera has no lens. The effect here is like a pinhole camera, but a pinhole camera is nothing at all like a lens. Pinholes diffract light. Lens refract light.

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    • Quibblekrust@thelemmy.club ⁨5⁩ ⁨hours⁩ ago

      Pinholes diffract light.

      The diffraction effects from a pinhole camera are not what make them work. In fact, diffraction makes the photographs worse than they otherwise would be. The pinhole makes an effective aperture for photography because it’s small size produces small circles of confusion on the film plane. Ideally, you would make the hole as small as possible, but beyond a certain (small) size, defraction becomes the dominant source of blurring. So the size of the pinhole should be chosen to yield the best balance between geometric blur and diffraction blur.

      The diffraction is merely a limit to the smallness of the aperture, and not what creates the image.

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    • Dasus@lemmy.world ⁨7⁩ ⁨hours⁩ ago

      Yea, but you could achieve this by placing a circle of cardboard in the middle or a ring that you attach to your lens.

      I don’t remember the guy but YT shorts I’ve seen a guy testing all sorts of different shapes and filters in front of his lenses or even just in front of his sensor without a lens.

      Can’t recall who.

      Anyhow

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  • Opisek@piefed.blahaj.zone ⁨10⁩ ⁨hours⁩ ago

    Our window blinds at school had tiny holes in them for the strings to go through and they had the exact same effect. You could see the eclipse projected once the tables.

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• baltakatei@sopuli.xyz ⁨12⁩ ⁨hours⁩ ago

  Sunlight is always doing this. It’s just that we call overlapping projections of a boring white-filled circles “dappled sunlight”.

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  • ameancow@lemmy.world ⁨9⁩ ⁨hours⁩ ago

    Additionally, if you can make sunlight shine through a tiny hole that is somewhat level with the ground into a dark room or box, onto a flat, white surface, you can often see a projection of the world outside if the sun is hitting everything just right, the image will be upside-down and reversed, but often in full color like a video image.

    Naturally occuring camera obscura must have freaked people the fuck out in olden times.

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    • HeyThisIsntTheYMCA@lemmy.world ⁨2⁩ ⁨hours⁩ ago

      in the house i grew up in, when the blinds were down in my window i would have a camera obscura for like half an hour each day. it made sick days more tolerable.

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• mEEGal@lemmy.world ⁨15⁩ ⁨hours⁩ ago

  You can actually use this, or more generally the shadow of a tree on any sunny day to calculate the distance to the sun !

  (Can’t seem to find the video demonstrating it, but I have a feeling it’s from Physics Girl or Up And Atom on youtube)

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  • Quibblekrust@thelemmy.club ⁨5⁩ ⁨hours⁩ ago

    Only if you know the sun’s size, which kind of presupposes you know its distance.

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  • Wolf314159@startrek.website ⁨11⁩ ⁨hours⁩ ago

    The ratio of the size of the image to the distance from the pinhole is the same as the ratio of the size of the sun to the distance to the sun.

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  • Zkuld@lemmy.world ⁨14⁩ ⁨hours⁩ ago

    how?

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    • mEEGal@lemmy.world ⁨14⁩ ⁨hours⁩ ago

      My gut says Thales’ thorem, but this needs checking.

      That’s why I was looking for the video

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• Kolanaki@pawb.social ⁨7⁩ ⁨hours⁩ ago

  Bubbles!

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• tdawg@lemmy.world ⁨7⁩ ⁨hours⁩ ago

  Thought it was just my coffee table

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• MasterOKhan@lemmy.ca ⁨15⁩ ⁨hours⁩ ago

  Best bokeh balls

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• latenightnoir@lemmy.blahaj.zone ⁨16⁩ ⁨hours⁩ ago

  Heey, it’s Elden Ring!

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• webp@mander.xyz ⁨10⁩ ⁨hours⁩ ago

  Big if true

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• justlemmyin@lemmy.world ⁨13⁩ ⁨hours⁩ ago

  <Clears throat> well technically thats shadow of moon multiplied “naturally”.

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• Sxan@piefed.zip ⁨9⁩ ⁨hours⁩ ago

  It’s þe closest þing to being in drugs, wiþout being in drugs, I’ve ever experienced. It gets really surreal in a way hard to explain.

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• JoShmoe@ani.social ⁨13⁩ ⁨hours⁩ ago

  This meme is too real

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