Visual observation of lightning propagation
نویسندگان
چکیده
منابع مشابه
Luminosity Variation during Propagation of Lightning Channels
Luminosity variations of natural cloud-to-ground lightning flashes were studied by analyzing a set of high speed video recordings. The frame rate and resolution of the camera was 5000 fps at 512×512 pixel resolution. The frames were stored as black and white sequence (SEQ) files which were converted to sequence of image files using the software provided by the camera. Algorithms were developed ...
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Ball lightning (BL) has been observed with two slitless spectrographs at a distance of 0.9 km. The BL is generated by a cloud-to-ground lightning strike. It moves horizontally during the luminous duration. The evolution of size, color, and light intensity is reported in detail. The spectral analysis indicates that the radiation from soil elements is present for the entire lifetime of the BL.
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[1] We report the observation with the North Alabama Lightning Mapping Array (LMA) related to a terrestrial gamma‐ray flash (TGF) detected by RHESSI on 26 July 2008. The LMA data explicitly show the TGF was produced during the initial development of a compact intracloud (IC) lightning flash between a negative charge region centered at about 8.5 km above sea level (−22°C temperature level) a hig...
متن کاملThe Effects of Charge and Electrostatic Potential on Lightning Propagation
Three-dimensional lightning mapping observations are compared to cloud charge structures and electric potential profiles inferred from balloon soundings of electric field in New Mexico mountain thunderstorms. The comparisons consistently show good agreement between the altitudes of horizontal lightning channels and the altitudes of electric potential extrema or wells. Lightning flashes appear t...
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Different flow patterns of downward gas-liquid two-phaseflow using simple mixer are studied in an experimental manner. An experimental setup is designed and fabricated to allow the visual observation of downward two-phase flow patterns and their transitions. The flow patterns are recorded by a 1200 frames per second high speed video camera. The quality of downward two-phase flow patterns photos...
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ژورنال
عنوان ژورنال: Nature
سال: 1986
ISSN: 0028-0836,1476-4687
DOI: 10.1038/322215a0