Concept of time as intervals between physical events
Time in physics is defined by its measurement i.e time is what a clock reads. It is a scalar quantity. Time can be measured using the following:
The use of heart beat as time interval
Diagram of device use for monitoring the heartbeat.
The use of sand-clock as time interval
Diagram of sand-clock or hourglass for
The use of ticker-timer as time interval
Diagram of ticker-timer or hour clock for measuring time
The use of pendulum as time interval
Diagram of a pendulum for measuring time
The use of stopwatch/clock as time interval
Diagram of a stopwatch for measuring time
Measurements of time
The most natural time unit is the solar day. It takes the earth one solar day to complete one rotation about its axis.
1day = 24hours
1hour = 60minutes
1minute = 60seconds
Therefore the units of time is second(s). Its multiple units are shown above.
- The SI unit for time is ?
- It takes the earth ————– day to complete one rotation
Answer: one solar day
- What device do athletic used to check the total time cover by an athlete
- Another name for sand-clock is?
- Heartbeat device is used to ———-?
Answer: to check the rate of heartbeat
- Time is a ———– quantity
Answer: scalar quantity