![Electromagnetic radiation / Filter / Cellophane / Photographic filter / Rainbow / IBM Shoebox / Blue / Light / Safelight / Optical filters / Optics / Technology Electromagnetic radiation / Filter / Cellophane / Photographic filter / Rainbow / IBM Shoebox / Blue / Light / Safelight / Optical filters / Optics / Technology](https://www.pdfsearch.io/img/297004a409c680aed55f4307d0651306.jpg) Date: 2012-06-13 21:08:22Electromagnetic radiation Filter Cellophane Photographic filter Rainbow IBM Shoebox Blue Light Safelight Optical filters Optics Technology | | make & do activity kit Science with Zoe & Cogs - Experiment 7 Spaced Out Colours Why does the sky appear blue from the earth? And how do different lightwaves
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