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  2. Prism (optics) - Wikipedia

    en.wikipedia.org/wiki/Prism_(optics)

    Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.

  3. Incarceration in the United States - Wikipedia

    en.wikipedia.org/wiki/Incarceration_in_the...

    Incarceration in the United States is one of the primary means of punishment for crime in the United States. In 2021, over five million people were under supervision by the criminal justice system, [2] [3] with nearly two million people incarcerated in state or federal prisons and local jails. The United States has the largest known prison ...

  4. Human musculoskeletal system - Wikipedia

    en.wikipedia.org/wiki/Human_musculoskeletal_system

    The human musculoskeletal system (also known as the human locomotor system, and previously the activity system) is an organ system that gives humans the ability to move using their muscular and skeletal systems. The musculoskeletal system provides form, support, stability, and movement to the body. It is made up of the bones of the skeleton ...

  5. Human reproductive system - Wikipedia

    en.wikipedia.org/wiki/Human_reproductive_system

    The male reproductive system is a series of organs located outside the body and around the pelvis region of a male that contribute towards the reproduction process. The primary direct function of the male reproductive system is to provide the male sperm for fertilization of the ovum. Penile shrinkage due to low temperatures.

  6. Visible spectrum - Wikipedia

    en.wikipedia.org/wiki/Visible_spectrum

    White light is dispersed by a prism into the colors of the visible spectrum. The visible spectrum is the band of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light (or simply light). The optical spectrum is sometimes considered to be the same as the ...

  7. Limbic system - Wikipedia

    en.wikipedia.org/wiki/Limbic_system

    The limbic system, also known as the paleomammalian cortex, is a set of brain structures located on both sides of the thalamus, immediately beneath the medial temporal lobe of the cerebrum primarily in the forebrain. [1] Its various components support a variety of functions including emotion, behavior, long-term memory, and olfaction.

  8. Human - Wikipedia

    en.wikipedia.org/wiki/Human

    The human brain, the focal point of the central nervous system in humans, controls the peripheral nervous system. In addition to controlling "lower", involuntary, or primarily autonomic activities such as respiration and digestion , it is also the locus of "higher" order functioning such as thought , reasoning , and abstraction . [281]

  9. Human evolution - Wikipedia

    en.wikipedia.org/wiki/Human_evolution

    For Anthropology, see Anthropology. The hominoids are descendants of a common ancestor. Human evolution is the evolutionary process within the history of primates that led to the emergence of Homo sapiens as a distinct species of the hominid family that includes all the great apes. [1]