منابع مشابه
Photoacoustic Sounds from Meteors
Concurrent sound associated with very bright meteors manifests as popping, hissing, and faint rustling sounds occurring simultaneously with the arrival of light from meteors. Numerous instances have been documented with -11 to -13 brightness. These sounds cannot be attributed to direct acoustic propagation from the upper atmosphere for which travel time would be several minutes. Concurrent soun...
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BACKGROUND Indirect inguinal hernias are usually congenital, forming a sac in the core of the spermatic cord covered by the internal spermatic, cremasteric, and external spermatic fasciae(1-3). Direct inguinal hernias are acquired; the sac lies beside/behind the cord(1-3). A rare third type is a combination of indirect and direct sacs on both sides of inferior epigastric vessels(1-3). We descri...
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We study a model of mass redistribution on a finite graph. We address the questions of convergence to equilibrium and the rate of convergence. We present theorems on the distribution of empty sites and the distribution of mass at a fixed vertex. These distributions are related to random permutations with certain peak sets.
متن کاملEvaporation of high speed sporadic meteors
Recent measurements conducted at the Arecibo Observatory report high-speed sporadic meteors having velocities near 50 km/s. The results seem to indicate a bimodal velocity distribution in the sporadic meteors (maxima at ∼20 km/s and ∼50 km/s). The particles have a maximum mass of ∼1μg. This paper will present an analysis of the ablation of 1μg meteoroids having velocities of 20, 30, 50, and 70 ...
متن کاملTunguska genetic anomaly and electrophonic meteors
One of great mysteries of the Tunguska event is its genetic impact. Some genetic anomalies were reported in the plants, insects and people of the Tunguska region. Remarkably, the increased rate of biological mutations was found not only within the epicenter area, but also along the trajectory of the Tunguska Space Body (TSB). At that no traces of radioactivity were found, which could be reliabl...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1885
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/45.7.408