Writings
Helliwell was the author of one book, "Whistlers and Related Ionospheric Phenomena," and more than 90 scientific papers. Three of his papers deserve special mention. One of these reported on low frequency emissions associated with the 1989 Loma Prieta earthquake. Another describes how injection of a low frequency radio signal into the magnetosphere causes a radio quieting of the natural noise that's associated with these frequencies. Another paper showed that the alternating current power grids in North America (60 Hz) and Europe (50 Hz) affect auroral chorus emissions.
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Famous quotes containing the word writings:
“If someday I make a dictionary of definitions wanting single words to head them, a cherished entry will be “To abridge, expand, or otherwise alter or cause to be altered for the sake of belated improvement, one’s own writings in translation.””
—Vladimir Nabokov (1899–1977)
“A people’s literature is the great textbook for real knowledge of them. The writings of the day show the quality of the people as no historical reconstruction can.”
—Edith Hamilton (1867–1963)
“Accursed who brings to light of day
The writings I have cast away.”
—William Butler Yeats (1865–1939)