並前往https://tweb.ctas.tc.edu.tw/nature/phys/concept/ppt/%E9%AB%98%E4%B8%AD%E7%89%A9%E7%90%86%E8%AC%9B%E7%BE%A9_01%E7%89%A9%E7%90%86%E9%87%8F%E8%88%87%E6%99%82%E7%A9%BA.pps