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 کاملThe 18th-century battle over lunar motion
nals, the Soviet Union’s Luna 2 became the first manmade object to reach the Moon. The intentional crash landing of the spacecraft on 13 September 1959 once again demonstrated Soviet technological superiority over the US. That event can be regarded as the trigger of the so-called race to the Moon, initiated by President John F. Kennedy in May 1961. As the much-broadcast commemoration of Apollo ...
متن کاملOn Lunar Influence over Malarious Fevers
ence over malarious fever, in the face of so much recorded negative statistical evidence. As before mentioned, I consider the disturbing agencies, which must be present, sufficient to prevent the preparation of any trustworthy statistics. For instance, people very frequently do not apply for relief for attacks of fever. Malarious fevers having once occurred in any individual, may be re-excited ...
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...
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ژورنال
عنوان ژورنال: The Physics Teacher
سال: 2014
ISSN: 0031-921X
DOI: 10.1119/1.4902209