منابع مشابه
Retinal meteor
We describe a case of a 65-year old man diagnosed with retinal vasoproliferative tumour secondary to posterior uveitis. The fluorescein angiography shows an interesting meteor-like leak emanating from the tumour and rising towards the superior retina in the later frames of the angiogram. Pictorially, we call it the "Retinal Meteor" and also describe the possible mechanism for this pattern of le...
متن کاملMeteor velocities
Introduction Conclusions References Tables Figures Back Close Abstract Introduction Conclusions References Tables Figures Back Close Abstract Determining the velocity of meteoroids as they enter the Earth's atmosphere is very important since the value is fundamental in calculating the orbit of the meteoroid and hence eventually its origin. We describe early attempts at this determination and hi...
متن کاملThe phenomena of meteor-burst propagation using reflections from ionized meteor trails is described in Recommendation
The ITU Radiocommunication Assembly, considering a) that experiments have already shown the practicability of utilizing the frequency band between 30 and 50 MHz for transmission by meteor-burst propagation to distances well beyond the horizon; b) that systems using this mode of propagation are already in service for burst data transmission, recommends 1. that Annex 1 be used as guidance for the...
متن کاملthe u.s. policy in central asia and its impact on the colored revolutions in the region (the case study of tulip revolution in kyrgyzstan)
چکیده ندارد.
15 صفحه اولMeteor stream activity IV. Meteor outbursts and the reflex motion of the Sun
A third meteor outburst of Aurigids was observed in 1994, similar to two previous events in 1935 and 1986. Again, the parent comet was far from perihelion. In search of a cause for these outbursts, the role of planetary perturbations was examined. It is found that the Aurigid outbursts, and other such outbursts, occurwhen the position of the planets Jupiter and Saturn are in two different confi...
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ژورنال
عنوان ژورنال: Nature
سال: 1876
ISSN: 0028-0836,1476-4687
DOI: 10.1038/013187a0