Question

which of these can only measure time interval and not the time of day a)sand clock b) sundial d) quartz clock.​

Answer 1

Answer:

sundials

Explanation:

they are used to measure time during day but not at night times

Answer 2

Sand clock can only measure intervals of time and not time of the day.

Explanation:

Sand clock can only measure intervals of time and not time of the day.  

• Sand clocks are also called as Hourglass. It is a structure  which holds sand in it and sand slips through a small hole in between the two parts.
• Sand clocks are designed for certain periods of time. The sand in the upper part takes a  certain period of time to fully collect in the bottom part.
• These can only tell the period of time it takes for it to get empty but not the time of the day. These can only tell the periods of interval.
• Sundial clocks can tell the time of the day it is but not exact intervals. It can convey it is morning, mid-noon, afternoon, evening and an average time of the day but not the periods of time.
• Quartz clock can give the exact interval as well as time of the day.