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Physics
dargen 4/25/2008 | 10 (1) | 220 | 22 | 0 | English
overview of nuclear power ... more>>
anonymous 8/23/2007 | 9 (1) | 450 | 27 | 0 | English
physics
www.intute.ac.uk/sciences/
: science, engineering & technology
Internet resources for
Internet resources for physics
The best of the Web
Welcome to this guide to the best
of the Web for Physics.
In these pages you will find a selection
of some of the most useful websites for
students, lecturers and researchers
working in Phy ... more>>
anonymous 8/23/2007 | 1 (1) | 2022 | 139 | 0 | English
Physics Formulary
By ir. J.C.A. Wevers
c 1995, 2005 J.C.A. Wevers Version: April 14, 2005
Dear reader,
This document contains a 108 page LATEX file which contains a lot equations in physics. It is written at advanced
undergraduate/postgraduate level. It is intended to be a short reference for anyone who works with physics and
often needs to l ... more>>
Prospero 8/1/2008 | 0 (0) | 18 | 0 | 0 | English
Chung, McElrath & Roncoli, JPL (2006) ... more>>
Prospero 7/29/2008 | 0 (0) | 66 | 0 | 0 | English
Shkuratov, Pieters, Omelchenko, Stankevich, Kaydash, Taylor & Kharkov; Astronomical Observatory, Kharkov, Ukraine; There have been several approaches to develop remote sensing technique to estimate composition of the lunar surface using multispectral observations. We present a new approach based on statistical
analysis of spectral and compositional data for lunar samples by the Lunar Soil Characterization Consortium (LSCC) and using the UVVIS Clementine data with 1 km resolution. This technique allows us to estimate and map the abundance of TiO2, SiO2, and FeO, pyroxene
and plagioclase content, and maturity degree (Is/FeO). ... more>>
Prospero 8/12/2008 | 0 (0) | 21 | 0 | 0 | English
Klima1, Pieters & Dyar, Department of Geological Sciences, Brown University, Providence & Department of Astronomy, Mount Holyoke College, South Hadley.
Pyroxene is one of the most common minerals in both evolved and undifferentiated solid bodies of the solar system. Various compositions of pyroxene have been directly studied in meteorites and lunar samples and remotely observed by telescopic and orbital measurements of the moon, Mars, Mercury, and several classes of asteroids. Laboratory studies of pyroxene spectra have shown that absorption features diagnostic of pyroxene in both the near and mid infrared are composition dependent. The challenge for remote analyses has been to reduce the level of ambiguity to allow a quantitative assessment of mineral chemistry. This study focuses on the analysis of a comprehensive set of synthetic Ca-Fe-Mg pyroxenes from the visible through far-IR (0.3-50 μm) to address the fundamental constraints of crystal structure on absorption ... more>>
Prospero 8/5/2008 | 0 (0) | 28 | 0 | 0 | English
Wilcox, Lucey & Gillis, Hawaii Institute of Geophysics and Planetology, University of Hawaii, Honolulu; Remotely mapping iron on the
lunar surface requires the separation of the spectral effects of iron and maturity. Increasing iron causes a darkening and reduced reddening of soil between 950 and 750 nm, while increasing maturity causes a darkening and reddening of soil ... more>>
Prospero 6/22/2008 | 0 (0) | 50 | 1 | 0 | English
Four decades ago the United States and NASA perfected "terminal descent" and the art of landing safely on Earth's Moon. Nothing fancy, Surveyor showed us a lunar surface familar now but unexpected in 1966, and hinted at a Moon selenologists still haven't figured out. Competing for Google's Lunar X-Prize? Read how they made it look easy. ... more>>
Prospero 7/29/2008 | 0 (0) | 53 | 0 | 0 | English
P. J. Stooke, Departments of Geography and Physics and Astronomy, University of Western Ontario; Previous landing site studies for the lunar south pole have emphasized sites with maximum
duration of sunlight for solar powered lander operation (Euromoon 2000; Lunacorp Icebreaker mission). Using this plus two other site selection criteria, access to South Pole/Aitken basin ejecta and convenient rover access to perpetually shaded regions with possible volatile materials, I identify several candidate landing sites for future missions. ... more>>
Prospero 8/12/2008 | 0 (0) | 31 | 0 | 0 | English
Head, Hoppa1, Gardner, Seybold, and Svitek, Raytheon, Tucson, Stellar Exploration, San Luis Obispo.
For 60 years the US Defense Department has invested heavily in producing small, low mass, precision guided vehicles. The technologies matured under these programs include terrain-aided guidance and navigation, closed loop terminal guidance algorithms, robust autopilots, high thrust-to-weight propulsion systems , autonomous mission management software, sensors, vehicle state estimation, and data fusion. These technologies will aid NASA in addressing the requirements flowing from the Vision for Space Exploration articulated in January 2004 as well as New Millennium Science and Technology ... more>>
anonymous 2/20/2008 | 0 (0) | 116 | 0 | 0 | English
Chapter 7 RNS Superstrings The real world as we know it described by the standard model of particle physics contains two general classes of particles. These are defined in terms of their spin angular momentum as follows. Those particles with whole integer spin are called bosons, while those with half-integer spin are called fermions. At the level o ... more>>
Prospero 8/5/2008 | 0 (0) | 49 | 0 | 0 | English
Ranen & Jacobsen, Department of Earth and Planetary Sciences, Harvard University, Cambridge; The size of the lunar magma ocean
has major implications for the method and duration of lunar formation as well as for the thermal history and evolution of the lunar interior. However, the depth of the initial Lunar magma ocean has remained controversial. ... more>>
Prospero 6/22/2008 | 0 (0) | 74 | 0 | 0 | English
Four decades ago the United States and NASA perfected "terminal descent" and the art of landing safely on Earth's Moon. Nothing fancy, Surveyor showed us a lunar surface familar now but unexpected in 1966, and hinted at a Moon selenologists still haven't figured out. Competing for Google's Lunar X-Prize? Read how they made it look easy. ... more>>
Prospero 7/29/2008 | 0 (0) | 49 | 1 | 0 | English
Lawrence, Lau, Steutel, Stopar, Wilcox and Lucey, Hawai‘i Institute of Geophysics and Planetology, University of Hawai‘i Manoa; The spectral reflectance of the Moon is an important property for studies of lunar geology, quantitative physical modeling of the moon, and in-flight calibration of spacecraft sensors. ... more>>
Prospero 8/12/2008 | 0 (0) | 54 | 0 | 0 | English
Gaffney, Borg, & Asmerom, University of New Mexico, Albuquerque
Analysis and interpretation of lunar Pb isotopic compositions has been challenging, given the low Pb concentrations of lunar materials and the ease with which the Pb isotopic system can be disturbed. Because lunar 204Pb concentrations are low, and thus difficult to measure, previous Pb investigations primarily relied on using combined 238U-206Pb and 235U-207Pb systematics to determine crystallization ages and initial Pb isotopic compositions of the samples, and to interpret magma source region history. With the current study, we have measured the Pb and U isotopic compositions of Apollo 11 sample 10017, and we interpret the Pb isotope systematics in the context of previously determined Rb-Sr ages. 10017 is an ilmenite-rich, high-Ti basalt, with a moderate KREEP component, and represents an enriched end-member of mare volcanism. For comparison, we also discuss 15085, which represents a more depleted mare end-member ... more>>
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