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  2. List of songs about the September 11 attacks - Wikipedia

    en.wikipedia.org/wiki/List_of_songs_about_the...

    "A religious-tinged reflection on the events of the day that focuses on a firefighter at Ground Zero." [3] [23] "You're Missing" About how a family must continue to function after the Father is killed in the attacks. SR-71 "Truth" Tomorrow: 2002: W.A.S.P. "Hallowed Ground" Dying for the World: 2002: Neil Young "Let's Roll" Are You Passionate ...

  3. List of entertainment affected by the September 11 attacks

    en.wikipedia.org/wiki/List_of_entertainment...

    Bad Company (2002) - Its release date pushed back several months because the plot involved a criminal mastermind planning to detonate a bomb in the Grand Central Terminal. Gangs of New York (2002) - The movie's release date was intended for Christmas 2001, but due to the September 11 attacks it was delayed until a year later.

  4. Atmospheric optics - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_optics

    Atmospheric optics. A colorful sky is often due to indirect sunlight being scattered off air molecules and particulates, like smog, soot, and cloud droplets, as shown in this photo of a sunset during the October 2007 California wildfires. Atmospheric optics is "the study of the optical characteristics of the atmosphere or products of ...

  5. 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.

  6. Reflection (physics) - Wikipedia

    en.wikipedia.org/wiki/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) the angle at which the ...

  7. Geometrical optics - Wikipedia

    en.wikipedia.org/wiki/Geometrical_optics

    Geometrical optics. Geometrical optics, or ray optics, is a model of optics that describes light propagation in terms of rays. The ray in geometrical optics is an abstraction useful for approximating the paths along which light propagates under certain circumstances. The simplifying assumptions of geometrical optics include that light rays:

  8. Rotations and reflections in two dimensions - Wikipedia

    en.wikipedia.org/wiki/Rotations_and_reflections...

    A rotation in the plane can be formed by composing a pair of reflections. First reflect a point P to its image P′ on the other side of line L1. Then reflect P′ to its image P′′ on the other side of line L2. If lines L1 and L2 make an angle θ with one another, then points P and P′′ will make an angle 2θ around point O, the ...

  9. 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.

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