Light

why_is_the_sky_blue.pdf
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homemade_lightning.pdf
File Size:	360 kb
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light_bounces.pdf
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optical_illusions.pdf
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refracting_light.pdf
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rainbows.pdf
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suns_light.pdf
File Size:	67 kb
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Sound

what-is-sound__1_.pdf
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narwhal_sounds.pdf
File Size:	117 kb
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homemade_lightning.pdf
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Inventors

edison.pdf
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granville_t_woods.pdf
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thomas-edison.pdf
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tesla.pdf
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nikola-tesla-biography.pdf
File Size:	142 kb
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michael-faraday-biography.pdf
File Size:	414 kb
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ben_franklin.pdf
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