53,399 research outputs found

    A theory for the interpretation of lunar surface magnetometer data

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    Electromagnetic interaction of moon with spatial irregularities in interplanetary magnetic field

    The early despinning of the sun

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    Despinning of sun when passing through T Tauri stage during earlier developmen

    DRSS communication considerations for manned space flight

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    A lower and an upper bound or manned space flight requirements for a data relay satellite system (DRSS) in the 1975-1980 time period are described. In all cases, the most stringent requirement is an intersatellite link to provide wideband information transfer from an overseas DRS to the Continental United States. A parametric communication analysis is made as a function of varying frequency and antenna aperture. The desirability of using a VHF frequency band for low data rates and voice relay and the requirement for frequencies of 8 and 16 GHz for video and wideband digital data relay are shown

    Supporting State Policymakers' Implementation of Federal Health Reform

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    Outlines the capacities states will need to implement federal healthcare reform in the areas of information and analysis, strategic implementation and planning, topic-specific technical assistance, communications, and coordination and integration

    Transient electromagnetic interaction of the moon with the solar wind

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    Transient response of moon to variations in interplanetary magnetic fiel

    The nature of the long time decay at a second order transition point

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    We show that at a second order phase transition, of \phi^4 like system, a necessary condition for streched exponential decay of the time structure factor is obeyed. Using the ideas presented in this proof a crude estimate of the decay of the structure factor is obtained and shown to yield stretched exponential decay under very reasonable conditions.Comment: 7 page

    Energy conditions outside a dielectric ball

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    We show analytically that the vacuum electromagnetic stress-energy tensor outside a ball with constant dielectric constant and permeability always obeys the weak, null, dominant, and strong energy conditions. There are still no known examples in quantum field theory in which the averaged null energy condition in flat spacetime is violated.Comment: 12 pages, RevTex
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