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A daily word, its definition, and an example of its usage.

The word undulate has appeared in 10 New York Times articles in the past year, including on Sept. 24 in "The Sun That Did Not Roar" by Kenneth Chang:

  • For scientists trying to understand the dynamics in the interior of the Sun, it has been a humbling experience enlightening them about how much they do not know. "If there's anyone who has figured it out, I haven't heard, that's for sure," said Douglas Biesecker, a physicist at the Space Weather Prediction Center and the chairman of a panel that had issued predictions about the solar cycle.
  • They do have a basic understanding. Inside the Sun, flows of electrons and protons generate magnetic fields that undulate on roughly an 11-year schedule. The roiling of the fields create regions that are cooler and darker - sunspots. The twisting magnetic fields within sunspots periodically snap, releasing enormous amounts of energy in solar flares and coronal mass ejections.


Financial Times February 28, 2014

"Politicians can improve the world but only bit by bit. Try something small, that's easily reversed. If it works, scale it up. If not, you drop it"
Simon Kuper

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