Notes

Concerns about music ultimately involve questions of time. Because we cannot apprehend time by any of the physical senses, we are compelled to investigate the aspects of nature that reveal time. Time is a measure of change, and describes in a manner the way in which events occur in the universe.

CONTENTS
THE NATURE OF TIME
General Definitions	1
Time Length	2
The Direction of Time	3
The Order of Time	4
Synchronicity and Phase	5
Time Interval	6
Time Relation	7
Units of Time	8
Time Comparison	9
Time Lag	10
Time Delay	11
Time and Motion	12
Interactions and Cascades	14
Oscillations	15
Waves	17
Energy and Momentum	19
Energy and Frequency	21
Velocity and Acceleration	22
Mass and Density	24
Temperature and Pressure	25
Matter and Transformation	26
Space and Time	27
Time and Observation	28
Real Time	30
COMMONLY DEFINED TIME SCALES AND STANDARDS
Common Time	31
Astronomical Cycles	32
Pulsars	34
Cepheid Variables	35
Atomic Time Frequencies	36
International Atomic Time	38
The Age of the Universe	39
Earth Time	40
Coordinated Universal Time	42
Electrical and Acoustic Transmissions	43
Standard Time	44
Geospheric Cycles	45
Geophysical Time	46
Measuring Geological Time	49
Biological Time	50
Time and Evolution	52
Radiometric Dating	54
Mutation Rate	55
Sensory and Motor Clocks	56
The Brain	58
Sensory Awareness	60
Memory and Consciousness	61
Psychological Time	62
Social and Cultural Time	64
Historical Time	65
Time and Number	66
Time and Distance	67
Degrees of Time	68
Time and Information	69
System Control Time	70
Critical Timing	71

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