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  2. Moore's lightning streaks - Wikipedia

    en.wikipedia.org/wiki/Moore's_lightning_streaks

    Moore's lightning streaks are lightning type streaks (seen to the temporal side) due to sudden head or eye movement in the dark. They are generally caused by shock waves in the vitreous humor hitting the retina or traction on the retina from fibers in the vitreous humor.

  3. Shadowgraph - Wikipedia

    en.wikipedia.org/wiki/Shadowgraph

    Shadowgram of shock waves from a supersonic bullet fired from a rifle. The shadowgraph optical technique reveals that the bullet is moving at a Mach number of about 1.9. Left- and right-running bow waves and tail waves stream back from the bullet, and its turbulent wake is also visible.

  4. Shock wave - Wikipedia

    en.wikipedia.org/wiki/Shock_wave

    In fact, correct capturing and detection of shock waves are important since shock waves have the following influences: (1) causing loss of total pressure, which may be a concern related to scramjet engine performance, (2) providing lift for wave-rider configuration, as the oblique shock wave at lower surface of the vehicle can produce high ...

  5. Schlieren photography - Wikipedia

    en.wikipedia.org/wiki/Schlieren_photography

    Shock waves produced by a T-38 Talon during flight using analog background-oriented schlieren. Background-oriented schlieren technique (BOS [7]) relies on measuring or visualizing shifts in focused images. In these techniques, the background and the schlieren object (the distortion to be visualized) are both in focus and the distortion is ...

  6. Atmospheric focusing - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_focusing

    The shock wave is impacted by what the meteor is made of, temperature, and pressure. [1] Because the meteors need to have a large size and mass, there is only a small percentage of meteors that can create these shock waves. [2] Radar and Infrasonic methodologies are able to detect meteor shock waves. These tools are used to study these shock ...

  7. Schlieren - Wikipedia

    en.wikipedia.org/wiki/Schlieren

    Toepler's original system [2] was designed to detect schlieren in glass used to make lenses. In the conventional schlieren system, [3] a point source is used to illuminate the test section containing the schliere. An image of this light is formed using a converging lens (also called a schlieren lens).

  8. Flash blindness - Wikipedia

    en.wikipedia.org/wiki/Flash_blindness

    The bright light overwhelms the retinas of the eyes and generally gradually fades, lasting anywhere from a few seconds to a few minutes. However, if the eyes are exposed to a high enough level of light, such as a nuclear explosion, the blindness can become permanent. Flash blindness may also occur in everyday life.

  9. Argon flash - Wikipedia

    en.wikipedia.org/wiki/Argon_flash

    The light is generated by a shock wave in argon or, less commonly, another noble gas. The shock wave is usually produced by an explosion. Argon flash devices are almost exclusively used for photographing explosions and shock waves. Although krypton and xenon can be also used, argon is favored because of its low cost. [1]