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  2. 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 ...

  3. 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 ...

  4. 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 ...

  5. 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).

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  7. Category:Shock waves - Wikipedia

    en.wikipedia.org/wiki/Category:Shock_waves

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  8. Video captures rare 'snownado' vortex amid heavy ... - AOL

    www.aol.com/video-captures-rare-snownado-vortex...

    A video taken in Utah over the weekend captured a rare, mesmerizing weather occurrence known as a "snownado." According to the World Meteorological Organization (WMO) and The Weather Channel, a ...

  9. youtube-dl - Wikipedia

    en.wikipedia.org/wiki/Youtube-dl

    youtube-dl -o <path> <url> To see the list of all of the available file formats and sizes: youtube-dl -F <url> The video can be downloaded by selecting the format code from the list or typing the format manually: youtube-dl -f <format/code> <url> The best quality video can be downloaded with the -f best option.