Measuring Light Pollution

Students are introduced to the concept of light pollution by investigating the nature, sources, and level of light existing in their environment. They learn about adverse effects of light and the resulting consequences on human, animal and plants such as Sky Glow, Direct Glare, Light Trespass, Animal Disorientation and Energy Waste. Students build a light meter based on a light sensor mounted to the LEGO® NXT Intelligent Brick to record the light intensity emitted by various sources of light. They are introduced to engineering concepts such as sensors, illuminance, lux meter or light meter, lumen and lux (lx) units of illuminance. They identify potential sources of light pollution, record luminance level in their classroom and learn how to better use light and to save energy. Students also explore the technologies designed by engineers to reduce light pollution and energy waste.