LogoLog inSubscribe

Sundial

Learning objectives

  • To illustrate a famous application dealing with the straight-line path of light.

The Earth moves around the sun but, in our terrestrial frame of reference, the sun seems to move around the Earth. This periodic motion is the basic principle underlying the sundial.  The shadow cast by the “gnomon” indicates the hour of the day.

Discover EduMedia for free

The interactive encyclopedia that brings science and math to life in the classroom.

sourceOver 1,000 resources

School level

Sign up for our newsletter