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中学理科
10 Feb 2025
光
光の反射と屈折:入射角、反射角、屈折角の違い
4956 views
14 Apr 2019
自ら光を発するものを光源という。太陽や電球は光源であるが、地球やイスは光源ではない。光は光源からまっすぐ進み、光速は秒速30万k...
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