What is this session about
Phenomena around the Earth-Sun system
Simple measurements/observations with a sundial can tell us a lot about interesting phenomena
A common misconception
What is the reason for the seasons?
Measuring the circumference of the Earth
What do we discuss in this session?
Starting with simple observations, one can build a lot of understanding about the Earth-Sun system. We discuss such observations and connect them to various aspects of our life on the planet, such as the seasons, the length of the day, the apparent motion of the Sun in the sky, etc.
- Constructing a basic sundial
- The reason for seasons
- Measuring our latitude
- Zero shadow day
- Measuring Earth’s circumference by doing simultaneous measurements of shadows