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1 gen 100 anni - Ptolemy's Discovery

Descrizione:

Ptolemy discovered how light beams bend when traveling from air to glass.

Aggiunto al nastro di tempo:

Gr. 8 Science Unit C Section 1.0 Timeline

5 nov 2018

0

0

425

Data:

1 gen 100 anni

Adesso

~ 1927 years ago

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