Question

Which physical quantity was measured by the using sudial in ancient times

Answer 1

Before the rise of railways in 1830 which gave the invention of a clock, there was sundial system to measure time.

According to the historians, this was the technique to divide days into smaller parts.

They were simply placed on stakes in the ground to know the direction through resulting shadow and time with the help of length.

Hence physical quantities such as time and length were measured using a sundial.