Question

Which of the following is based on the study of the shadow cast by the sun? Simple pendulum Atomic clock Sun dial Quartz clock​

Answer 1

Answer:

Sun dial is the answer of these question.

Answer 2

Sundial is based on the study of shadow cast by the sun.

Explanation:

• The earliest type of timekeeping device, which indicates the time of day by the position of the shadow of some object exposed to the sun's rays.

• As the day progresses, the sun moves across the sky, causing the shadow of the object to move and indicating the passage of time.

• When the earth rotates about its axis, the sun appears to “move” across the sky, causing objects to cast shadows.

• A sundial contains a thin rod, that casts a shadow onto a platform etched with different times. As the sun changes relative positions over the course of a day, the rod’s shadows change as well, thus reflecting the change in time.

• Sundials must be corrected across the span of a time zone. Every zone has a “reference longitude,” and with every degree of longitude away from the reference, the sundial is off by an additional 4 minutes.