Light and sound are two of the most important ways to understand the world around us. The sun is Earth's main source of energy and light. Light bounces off objects and travels to our eyes. Our eyes and brain work together to translate that light into what we see while our ears pick up sound vibrations and translate them into meaningful messages.
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Please note that this product will not work on newer Apple operating systems - specifically 10.9 (Mavericks) and 10.10 (Yosemite).