The B19008 Solar and Lunar Eclipse Apparatus is a manual, educational laboratory model used to demonstrate the mechanisms and relationship of the Earth, Moon, and Sun during solar and lunar eclipses.
Features
Demonstration Purpose: The apparatus is designed for geography and science education to visually explain the causes and phases of solar and lunar eclipses, making the concepts easier for students to understand than through textbook illustrations alone. Manual Operation: The model is typically operated by hand, allowing the user to control the movement of the Earth and Moon models around a light source that represents the Sun. Components: It usually consists of: A base plate. Models of the Earth and Moon. A light source (sometimes a candle or a luminescence unit) to simulate the Sun. Mechanisms (such as gears and poles) for the Earth and Moon to revolve. Principle: Solar Eclipse: By positioning the Moon between the Sun (light source) and the Earth model, a shadow is cast on the Earth, demonstrating a solar eclipse. Lunar Eclipse: By positioning the Earth between the Sun and the Moon model, the Earth's shadow falls on the Moon, demonstrating a lunar eclipse. Design: The apparatus is typically fitted on a metal or plastic base, with the Earth's axis inclined and pointing in the same general direction as it revolves around the Sun model.