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Tomáš Kubica
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Byli lidé na na Měsíci? Nejen o programu Apollo bude přednášet už tuto středu Pavel Gabzdyl v ostravském planetáriu. Doporučuji!
https://goo.gl/LM8YNp

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Chcete pozorovat zatmění Slunce, ale nemáte filtr ani jiné potřebné vybavení? Zkuste tento jednoduchý trik.

Jak a proč to funguje?
http://cs.wikipedia.org/wiki/Camera_obscura
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Skvělý prof. Jiří Podolský.

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