Ray - a line of energy that moves in one direction until it hits an object., Reflect - to bounce off an object or surface, Refract - to bend when passing through a substance, such as light through water, Absorb - to take in something steadily,

Electromagnetic Spectrum

リーダーボード

表示スタイル

オプション

テンプレートを切り替える

自動保存: を復元しますか?