Valon ominaisuuksia / Properties of light

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• CH 5. p. 41-47½ (before polarisation), read and learn
• BLOG
• p. 49: exc 1,3,4,7*
• * *What is the word for "kaikukoppa and tärykalvo" in English
• EXAM  17.3.  p. 7-49 + blog + notes