Mirrors and Periscopes 鏡子和潛望鏡

Learning about how light travels, mirrors, concave and convex surfaces, and the science behind periscopes and telescopes. Big thanks to Mark for helping us make this lesson happen!

了解光如何傳播、鏡子、凹凸表面以及潛望鏡和望遠鏡背後的科學。非常感謝馬克老師協助我們完成了這一課！