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A more recent hypothesis which may explain the FLASH effect is that hypoxic stem cell niches are preserved more readily through FLASH RT. [ 13 ] [ 7 ] Pratx and Kapp, 2019, suggest that stem cells which reside in a hypoxic niche are relatively radioresistant, but whenever surrounding tissue is damaged, the stem cells become more oxygenated and ...
The flash lag illusion or flash-lag effect is a visual illusion wherein a flash and a moving object that appear in the same location are perceived to be displaced from one another. [ 1 ] [ 2 ] Several explanations for this simple illusion have been explored in the neuroscience literature (for a review, see [ 3 ] ).
The Fröhlich effect. When a visual stimulus moves along a continuous trajectory, the initial position of this trajectory may be seen ahead of its veridical position with respect to an unpredictable event such as a punctuate flash. The Fröhlich effect is a visual illusion wherein the first position of a moving object entering a window is ...
The stroboscopic effect visibility meter can be applied for different purposes (see IEC TR 63158 [12]): Measurement of the intrinsic stroboscopic-effect performance of lighting equipment when supplied with a stable mains voltage; Testing the effect of light regulation of lighting equipment or the effect of an external dimmer (dimmer compatibility).
Sites that are maintained on shared hosting services often fail when confronted with the Slashdot effect. This has the same effect as a denial-of-service attack, albeit accidentally. The name stems from the huge influx of web traffic which would result from the technology news site Slashdot linking to websites. The term flash crowd is a more ...
Video of the effect. The flashed face distortion effect is a visual illusion involving the fast-paced presentation of eye-aligned faces. [1] Faces appear grotesquely transformed while the viewer focuses on the cross midway between them. [2] [3] As with many scientific discoveries, the phenomenon was first observed by chance.
The Broca-Sulzer effect or Broca-Sulzer phenomenon is an experimental observation related to the psychophysics of vision. It has two parts, temporal and spatial. In the temporal effect, the perceived brightness of a single flash of light first increases with the flash duration, then reaches a maximum, and decreases for a longer pulse.
The prepulse heats the gas, producing a dim, short-lived afterglow that results from free electrons and ionized particles that remain after the pulse shuts down. If the main flash is initiated before these particles can recombine, this provides a good quantity of ionized particles to be used by the main flash. This greatly decreases the rise time.