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  2. Reflection (physics) - Wikipedia

    en.wikipedia.org/wiki/Reflection_(physics)

    Reflection (physics) Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves. The law of reflection says that for specular reflection (for example at a mirror ...

  3. Total internal reflection - Wikipedia

    en.wikipedia.org/wiki/Total_internal_reflection

    Total internal reflection. In physics, total internal reflection (TIR) is the phenomenon in which waves arriving at the interface (boundary) from one medium to another (e.g., from water to air) are not refracted into the second ("external") medium, but completely reflected back into the first ("internal") medium.

  4. Reflection coefficient - Wikipedia

    en.wikipedia.org/wiki/Reflection_coefficient

    Reflection coefficient. In physics and electrical engineering the reflection coefficient is a parameter that describes how much of a wave is reflected by an impedance discontinuity in the transmission medium. It is equal to the ratio of the amplitude of the reflected wave to the incident wave, with each expressed as phasors.

  5. Reflection (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Reflection_(mathematics)

    In mathematics, a reflection (also spelled reflexion) [1] is a mapping from a Euclidean space to itself that is an isometry with a hyperplane as a set of fixed points; this set is called the axis (in dimension 2) or plane (in dimension 3) of reflection. The image of a figure by a reflection is its mirror image in the axis or plane of reflection.

  6. Bidirectional reflectance distribution function - Wikipedia

    en.wikipedia.org/wiki/Bidirectional_reflectance...

    The bidirectional reflectance distribution function (BRDF), symbol , is a function of four real variables that defines how light from a source is reflected off an opaque surface. It is employed in the optics of real-world light, in computer graphics algorithms, and in computer vision algorithms. The function takes an incoming light direction ...

  7. Reflection seismology - Wikipedia

    en.wikipedia.org/wiki/Reflection_seismology

    Reflection seismology (or seismic reflection) is a method of exploration geophysics that uses the principles of seismology to estimate the properties of the Earth 's subsurface from reflected seismic waves. The method requires a controlled seismic source of energy, such as dynamite or Tovex blast, a specialized air gun or a seismic vibrator.

  8. Semmelweis reflex - Wikipedia

    en.wikipedia.org/wiki/Semmelweis_reflex

    Semmelweis reflex as belief perseverance. [edit] The Semmelweis reflex also exemplifies how belief perseverance causes individuals to adhere to their initial beliefs despite contradicting evidence. The human brain has fully developed the cerebral cortex and the prefrontal cortex (PFC), which equips individuals with the power to resist primitive ...

  9. Self-reflection - Wikipedia

    en.wikipedia.org/wiki/Self-reflection

    Self-reflection is the ability to witness and evaluate one's own cognitive, emotional, and behavioural processes. In psychology, other terms used for this self-observation include 'reflective awareness', and 'reflective consciousness', which originate from the work of William James. [2][3]