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  2. Krypton - Wikipedia

    en.wikipedia.org/wiki/Krypton

    Krypton is used in some photographic flashes for high speed photography. Krypton gas is also combined with mercury to make luminous signs that glow with a bright greenish-blue light. [39] Krypton is mixed with argon in energy efficient fluorescent lamps, reducing the power consumption, but also reducing the light output and raising the cost. [40]

  3. Kryptonian - Wikipedia

    en.wikipedia.org/wiki/Kryptonian

    The people of Argo (which is often portrayed as a city on Krypton itself that is protected from destruction by a forcefield but in some continuities is a Kryptonian colony on a moon or neighboring planet) also survive Krypton's destruction due to an energy field surrounding the city, although in most universes they either die out soon afterward ...

  4. Kryptonite - Wikipedia

    en.wikipedia.org/wiki/Kryptonite

    Kryptonite is a fictional material that appears primarily in Superman stories published by DC Comics.In its best-known form, it is a green, crystalline material originating from Superman's home world of Krypton that emits a unique, poisonous radiation that can weaken and even kill Kryptonians.

  5. Discovery of nuclear fission - Wikipedia

    en.wikipedia.org/wiki/Discovery_of_nuclear_fission

    At this point, the only evidence that they had was the barium. Logically, if barium was formed, the other element must be krypton, [105] although Hahn mistakenly believed that the atomic masses had to add up to 239 rather than the atomic numbers adding up to 92, and thought it was masurium (technetium), and so did not check for it: [106] 235 92 ...

  6. Isotopes of krypton - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_krypton

    Krypton-81 is useful in determining how old the water beneath the ground is. [10] Radioactive krypton-81 is the product of spallation reactions with cosmic rays striking gases present in the Earth atmosphere, along with the six stable or nearly stable krypton isotopes. [11] Krypton-81 has a half-life of about 229,000 years.

  7. Toxic heavy metal - Wikipedia

    en.wikipedia.org/wiki/Toxic_heavy_metal

    In humans, heavy metal poisoning is generally treated by the administration of chelating agents. [71] These are chemical compounds, such as CaNa 2 EDTA (calcium disodium ethylenediaminetetraacetate) that convert heavy metals to chemically inert forms that can be excreted without further interaction with the body.

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

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

    Naturally occurring, crystalline energy source found in the world of Remnant. The Aura of Humans and Faunus can activate it. Dust comes in a variety of types, each with different properties such as fire, ice, wind, gravity etc. There are four main kinds; these can be blended naturally or artificially to create new kinds.

  9. Biological roles of the elements - Wikipedia

    en.wikipedia.org/wiki/Biological_roles_of_the...

    It can displace potassium in humans affecting the central nervous system. Thallium poisoning has a long history in humans, especially as it has sometimes been a preferred poison. thorium: 90: 1b: Has no known biological role. [11] Radioactive. thulium: 69: 2a: No known function in humans, and is not taken up by plants. [11] Toxic in some forms ...