[ poin-ting-rob-ert-suh n ]
/ ˈpɔɪn tɪŋˈrɒb ərt sən /
the slowing down and consequent spiraling inward of small particles orbiting the sun, due to their interaction with solar radiation.
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Origin of Poynting-Robertson effect
1955–60; after English physicist John H. Poynting (1852–1914) and U.S. physicist Howard P. Robertson (1903–61)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019