Encyclopedia of Lunar Science

Living Edition
| Editors: Brian Cudnik

Lunar Impact Events, Luminous Efficiency, and Energy of

  • José M. MadiedoEmail author
  • José L. Ortiz
Living reference work entry
DOI: https://doi.org/10.1007/978-3-319-05546-6_116-1
Since the Moon has no protective atmosphere, meteoroids hit the lunar surface at high speed. As a consequence of this, these particles are completely destroyed during these collisions, producing new craters and giving rise to brief flashes of light that can be recorded from Earth by means of telescopes (Fig. 1). These flashes, which last only a fraction of a second, are the consequence of the conversion of a part of the kinetic energy of the impactor into light. The fraction of this kinetic energy E k that is transformed into luminous energy E r is called the “luminous efficiency” and is denoted by means of the Greek symbol η:
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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Facultad de Ciencias ExperimentalesUniversidad de HuelvaHuelvaSpain
  2. 2.Instituto de Astrofísica de Andalucía, CSICGranadaSpain

Section editors and affiliations

  • Jose Maria Madiedo
    • 1
  1. 1.Facultad de Ciencias ExperimentalesUniversidad de HuelvaHuelvaSpain