منابع مشابه
Variations in the sky brightness during a lunar eclipse
A total lunar eclipse is conjectured to have influence on the physical conditions of an environmental area, particularly on the brightness of the sky. The phenomenon might also be relevant on weather parameters change on Earth, such as temperature, humidity and pressure, though a straightforward correlation is not easy to establish. This work mainly aims at measuring the brightness of the sky a...
متن کاملLunar eclipse observations reveal anomalous thermal performance of Apollo reflectors
Laser ranging measurements during the total lunar eclipse on 2010 December 21 verify previously suspected thermal lensing in the retroreflectors left on the lunar surface by the Apollo astronauts. Signal levels during the eclipse far exceeded those historically seen at full moon, and varied over an order of magnitude as the eclipse progressed. These variations can be understood via a straightfo...
متن کاملMourning a music legend
Holy Cross College could expand its degree programs to o ffer fo u r -y e a r b a c h e l o r ’s d e g re e s in th e n e a r fu tu re , according to proposals currently being developed at the College. Pending accred ita t ion from the North Central Association of Colleges and Schools, Holy Cross wants to o ffer a fouryear bachelor of arts degree in addition to the tw o -y ea r a s s o c i a t ...
متن کاملLunar eclipse theory revisited Scattered sunlight in both the quiescent and the volcanically perturbed atmosphere
The residual brightness of the shadowed Moon during a lunar eclipse is attributed to unscattered sunlight rays refracted in the Earth’s atmosphere. The classical theory of lunar eclipses is built on the premise that the sunlight scattered by the gases and particles in the atmosphere contributes negligibly to the brightness of the eclipsed Moon. The current work revisits the lunar eclipse theory...
متن کاملThe Legend File System
We have designed, prototyped, and evaluated the Legend file system, which exploits the ability to regenerate lost files to improve reliability. Unlike RAID-5 and RAID-6, Legend degrades gracefully as the number of failed storage devices increases. Legend also mitigates the high storage capacity overhead imposed by n-way replications. Combined with existing methods, Legend can form another line ...
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ژورنال
عنوان ژورنال: Nature
سال: 1928
ISSN: 0028-0836,1476-4687
DOI: 10.1038/122845c0