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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. Entoptic phenomenon - Wikipedia

    en.wikipedia.org/wiki/Entoptic_phenomenon

    It's easier to see if the polarisation is rotating with respect to the observer's eye, although some observers can see it in the natural polarisation of sky light. [1] If the light is all blue, it will appear as a dark shadow; if the light is full spectrum, it will appear yellow.

  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. Synchrotron radiation - Wikipedia

    en.wikipedia.org/wiki/Synchrotron_radiation

    Synchrotron emission can also reveal the strength of the magnetic field at the front of the shock wave, as well as the circumstellar density it encounters, but strongly depends on the choice of energy partition between the magnetic field, proton kinetic energy, and electron kinetic energy.

  6. 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 ...

  7. Cosmic ray - Wikipedia

    en.wikipedia.org/wiki/Cosmic_ray

    The region between the termination shock and the heliopause acts as a barrier to cosmic rays, decreasing the flux at lower energies (≤ 1 GeV) by about 90%. However, the strength of the solar wind is not constant, and hence it has been observed that cosmic ray flux is correlated with solar activity.

  8. Magnetoreception - Wikipedia

    en.wikipedia.org/wiki/Magnetoreception

    Magnetoreception is a sense which allows an organism to detect the Earth's magnetic field. Animals with this sense include some arthropods , molluscs , and vertebrates (fish, amphibians, reptiles, birds, and mammals).

  9. Shock-capturing method - Wikipedia

    en.wikipedia.org/wiki/Shock-capturing_method

    In computational fluid dynamics, shock-capturing methods are a class of techniques for computing inviscid flows with shock waves.The computation of flow containing shock waves is an extremely difficult task because such flows result in sharp, discontinuous changes in flow variables such as pressure, temperature, density, and velocity across the shock.