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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. Sympathetic detonation - Wikipedia

    en.wikipedia.org/wiki/Sympathetic_detonation

    The shock sensitivity, also called gap sensitivity, which influences the susceptibility to sympathetic detonations, can be measured by gap tests. If detonators with primary explosives are used, the shock wave of the initiating blast may set off the detonator and the attached charge. However even relatively insensitive explosives can be set off ...

  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. 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).

  7. Watch rider jump from roller coaster after harness reportedly ...

    www.aol.com/watch-rider-jump-roller-coaster...

    Watch a man jump from the Desert Storm roller coaster at Castles N' Coasters in the Fox 10 video above. Show comments. Advertisement. Advertisement. Holiday Shopping Guides. See all. AOL.

  8. Would a government shutdown affect mail delivery? What to know

    www.aol.com/news/government-shutdown-affect-mail...

    Live updates: Will there be a government shutdown?Latest from Congress. Is mail service or the post office impacted by a government shutdown? The U.S. Postal Service would be unaffected because it ...

  9. Blast-related ocular trauma - Wikipedia

    en.wikipedia.org/wiki/Blast-related_ocular_trauma

    Blast-related ocular trauma comprises a specialized subgroup blast injuries which cause penetrating and blunt force injuries to the eye and its structure. The incidence of ocular trauma due to blast forces has increased dramatically with the introduction of new explosives technology into modern warfare.