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If you simultaneously send pulses of high frequency X rays and low frequency radio waves from Earth to the Moon,both waves will arrive at exactly the same time (assuming a vacuum between Earth and Moon).
Minutes
The official written record of the proceedings and decisions made during a meeting.
Periods
Distinct spans of time marked by specific events, conditions, or characteristics.
REM Sleep
A phase of sleep characterized by rapid eye movements, increased brain activity, and vivid dreams.
NREM Sleep
Non-Rapid Eye Movement sleep, a restorative sleep phase that includes stages 1 through 3, each deeper than the last.
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