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Year: 1957
transportation for wizards only and invisible to all Muggles
Learn about the strength and stiffness of materials
See how an onion cell shrivels and how an paramecium wiggles
this ride-on pony is perfect for pretend gallops through backyard trails or living room adventures
Solar Battery Slot Car Set Year: 1957The Solar Battery is comprised of a number of photo voltaic cells. Each cell is made from a slab of semiconductor crystal. When light shines on the cell voltage is produced that can create an electrical current in a circuit. The greater the light intensity on the solar battery the greater is the current it can produce. Intended for use to familiarize students and or hobbyists with functional solar cell principles, and practical applications of solar
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