Assertion: master clock | /r/CapableOf | use that information
Facets:
value: to synchronize the 24-hour day
type: PURPOSE
Source sentences:
text: Here’s how this system, known as the circadian rhythm, works: As the sun begins to rise, “the master clock receives light input directly from the eye and uses that information to synchronize the 24-hour day,” says Melissa A. St. Hilaire, Ph.D., an associate biostatistician in the division of sleep and circadian disorders at Brigham and Women’s Hospital in Boston.