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  2. Subsurface scattering - Wikipedia

    en.wikipedia.org/wiki/Subsurface_scattering

    Real-world subsurface scattering of light in a photograph of a human hand Computer-generated subsurface scattering in Blender. Subsurface scattering (SSS), also known as subsurface light transport (SSLT), [1] is a mechanism of light transport in which light that penetrates the surface of a translucent object is scattered by interacting with the material and exits the surface potentially at a ...

  3. Obsidian - Wikipedia

    en.wikipedia.org/wiki/Obsidian

    Obsidian (/ ə b ˈ s ɪ d i. ən, ɒ b-/ əb-SID-ee-ən ob-) [5] is a naturally occurring volcanic glass formed when lava extruded from a volcano cools rapidly with minimal crystal growth.

  4. List of fictional elements, materials, isotopes and subatomic ...

    en.wikipedia.org/wiki/List_of_fictional_elements...

    The fictional synthetic metal dureum has a higher moment of inertia than regular materials. It takes more work to move or stop moving than other objects of the same mass. Dust RWBY: Naturally occurring, crystalline energy source found in the world of Remnant. The Aura of Humans and Faunus can activate it.

  5. Transparency and translucency - Wikipedia

    en.wikipedia.org/wiki/Transparency_and_translucency

    Photons interact with an object by some combination of reflection, absorption and transmission. Some materials, such as plate glass and clean water, transmit much of the light that falls on them and reflect little of it; such materials are called optically transparent. Many liquids and aqueous solutions are highly transparent.

  6. Opacity - Wikipedia

    en.wikipedia.org/wiki/Opacity

    An opaque object is neither transparent (allowing all light to pass through) nor translucent (allowing some light to pass through). When light strikes an interface between two substances, in general, some may be reflected, some absorbed, some scattered, and the rest transmitted (also see refraction).

  7. Invisibility - Wikipedia

    en.wikipedia.org/wiki/Invisibility

    The agent can be compared to a stone in a river, around which water passes, but slightly down-stream leaves no trace of the stone. Comparing light waves to the water, and whatever object that is being "cloaked" to the stone, the goal is to have light waves pass around that object, leaving no visible aspects of it, possibly not even a shadow. [9]

  8. Expandable water toy - Wikipedia

    en.wikipedia.org/wiki/Expandable_water_toy

    Orbeez water beads, before and after being added to water. Expandable water toys (also grow-in-water toys or grow monsters) are novelty items made from a superabsorbent polymer. They are toys that expand after putting them into water for anything from a few hours up to several days, depending on size. They shrink in saltwater or when exposed to ...

  9. Ulexite - Wikipedia

    en.wikipedia.org/wiki/Ulexite

    Ulexite is a structurally complex mineral, with a basic structure containing chains of sodium, water and hydroxide octahedra. The chains are linked together by calcium, water, hydroxide and oxygen polyhedra and massive boron units. The boron units have a formula of [B 5 O 6 (OH) 6] 3– and a charge of −3. They are composed of three borate ...