In the beginning, we were tasked with building a water heater powered by solar energy alone. Used various materials such as aluminum, copper, and cardboard to build our heater. We saw an increase in temperature around 8 degrees celsius. We had a cardboard box that we wrapped on most sides it aluminum foil to increase the box's albedo, soon, we placed mirrors inside the box to reflects more incoming light onto a copper tube which would take infrared light and capture it, causing heat. Copper is a good conductor of heat which then allows it to conduct most of that heat to the water inside the tube.
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