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  2. Atomic orbital - Wikipedia

    en.wikipedia.org/wiki/Atomic_orbital

    Atomic orbitals are basic building blocks of the atomic orbital model (or electron cloud or wave mechanics model), a modern framework for visualizing submicroscopic behavior of electrons in matter. In this model, the electron cloud of an atom may be seen as being built up (in approximation) in an electron configuration that is a product of ...

  3. Atmospheric optics - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_optics

    Other colors occur naturally in clouds. Bluish-grey is the result of light scattering within the cloud. In the visible spectrum, blue and green are at the short end of light's visible wavelengths, while red and yellow are at the long end. [20] The short rays are more easily scattered by water droplets, and the long rays are more likely to be ...

  4. Astrochemistry - Wikipedia

    en.wikipedia.org/wiki/Astrochemistry

    Infographic showing the theorized origin of the chemical elements that make up the human body. Astrochemistry is the study of the abundance and reactions of molecules in the universe, and their interaction with radiation. [1]

  5. H I region - Wikipedia

    en.wikipedia.org/wiki/H_I_region

    An HI region or H I region (read H one) is a cloud in the interstellar medium composed of neutral atomic hydrogen (HI), in addition to the local abundance of helium and other elements. (H is the chemical symbol for hydrogen, and "I" is the Roman numeral.

  6. Cosmic ray - Wikipedia

    en.wikipedia.org/wiki/Cosmic_ray

    galactic cosmic rays (GCR) and extragalactic cosmic rays, i.e., high-energy particles originating outside the solar system, and; solar energetic particles, high-energy particles (predominantly protons) emitted by the sun, primarily in solar eruptions. However, the term "cosmic ray" is often used to refer to only the extrasolar flux.

  7. Delta ray - Wikipedia

    en.wikipedia.org/wiki/Delta_ray

    Collectively, these electrons are defined as delta radiation when they have sufficient energy to ionize further atoms through subsequent interactions on their own. Delta rays appear as branches in the main track of a cloud chamber (See Figs. 1,2). These branches will appear nearer the start of the track of a heavy charged particle, where more ...

  8. 3 dermatologists explain why you still need to wear sunscreen ...

    www.aol.com/lifestyle/3-dermatologists-explain...

    “While clouds can block UV rays, most will still penetrate, especially if the cloud cover is thin,” says Dr. Jason Miller, a dermatologist at Schweiger Dermatology Group in New Jersey ...

  9. Cosmogenic nuclide - Wikipedia

    en.wikipedia.org/wiki/Cosmogenic_nuclide

    Here is a list of radioisotopes formed by the action of cosmic rays; the list also contains the production mode of the isotope. [4] Most cosmogenic nuclides are formed in the atmosphere, but some are formed in situ in soil and rock exposed to cosmic rays, notably calcium-41 in the table below.