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Problems Related to Interplanetary Matter (1961) / Chapter Skim
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MICROMETEORITE STUDIES FROM EARTH SATELLITES
Pages 69-72

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 69...
... Actually, it has not been possible to use the maximum capacity of the microphone sensors on space vehicle flights up to this time. The momentum detector has recently flown in three such vehicles, a '58, 1 '59, and Pioneer I, and has obtained information principally on impact frequencies of particles with momenta larger than a given threshold: 69
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From page 70...
... however points out that the luminous efficiencies of meteors depends highly on particle mass and density, and are probably not known to better than within two orders of magnitude. Whipple 's own estimate of the luminous efficiency of meteors, based on an assumed density of p = 0.
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From page 71...
... Alexander: We have tested the momentum detector for several possible sources of spurious signals: thermal shock, vibration, interference from interrogation of other instruments. On TJ '59, magnetometer interrogations have produced spurious signals, and corrections have been made to this date -- in fact, the lowest false count rate was in a month of high magnetometer interrogation.
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From page 72...
... (1959) SNAP sponsored conference on Meteoroid Hazard to Space Power Plants.
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Key Terms

  • energy detector
  • mass spectrum
  • momentum detector
  • velocity particles
  • crystal microphone

  • international space
  • line relating
  • space science
  • microphone sensor
  • slope near

  • magnetometer interrogation
  • science symposium
  • produced spurious
  • space vehicles
  • false count

  • sponsored conference
  • information principally
  • velocity spectrum
  • microphone detector
  • micrometeorite material

  • depends highly
  • low velocity
  • spurious events
  • rocket flights
  • dynamical effects

  • micron size
  • alexander national
  • recently flown
  • meteors depends
  • lowest false


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