The Learning Network Blog: Word of the Day | undulate

undulate •ˈən-jə-lət, ˈən-dyə-, ˈən-də-, -ˌlāt• verb

1. move in a wavy pattern or with a increasing and falling motion
two. stir up (water) so as to type ripples
three. increase and decrease in volume or pitch, as if in waves
4. take place in soft rounded shapes

The word undulate has appeared in ten New York Instances articles or blog posts in the past yr, such as on Sept. 24 in “The Sun That Did Not Roar” by Kenneth Chang:

For scientists trying to realize the dynamics in the interior of the Sun, it has been a humbling encounter enlightening them about how considerably they do not know. “If there’s anybody who has figured it out, I haven’t heard, that is for sure,” mentioned 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 standard understanding. Within the Sun, flows of electrons and protons create magnetic fields that undulate on roughly an eleven-yr routine. The roiling of the fields generate areas that are cooler and darker — sunspots. The twisting magnetic fields inside sunspots periodically snap, releasing tremendous quantities of energy in solar flares and coronal mass ejections.

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The Learning Network Blog: Word of the Day | undulate