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¡¤ http://www.kangwon.ac.kr/~sericc/sci_lab/physics/l_refraction/l_refraction.html
¡¤ http://science.kongju.ac.kr/highschool/phys/3/wave/wave/k13.html
¡¤ http://kr.dic.yahoo.com/search/enc/result.html?pk=14400100&p=?%20&field=id&type=enc
¡¤ http://my.dreamwiz.com/sunghundai/ms/chapter2/chapter2_title.htm
¡¤ http://myhome.naver.com/kjb1003/noname8.htm
¡¤ http://physica.gsnu.ac.kr/physedu/wavelight/wlmain.html
¡¤ http://www.kangwon.ac.kr/~sericc/sci_lab/physics/l_refraction/l_refraction.html
¡¤ http://www.soon.or.kr/physics5.html
¡¤ http://stewardess.inhatc.ac.kr/data/gen-data/visible-rays-2.htm
¡¤ http://phys.kyungwon.ac.kr/internet-class/optics/ch1/se2/se2.html
¡¤ http://optics.snu.ac.kr/on-line/bong/basic/contents/r4.htm
¡¤ http://educn.or.kr/middle/1grade/science/msc/1chap/sci-li2.htm
¡¤ http://user.chollian.net/~dongsw/text-physics/chap6-2.htm
¡¤ http://moolynaru.kyungpook.ac.kr/high_phy_ii/wave/15%BA%FB%C0%C7%20%BA%D0%BB%EAm/15%BA%FB%C0%C7%BA%D0%BB%EA.htm
¡¤ http://homepage.hitel.net/servlet/DownLoad/p_AttFileCode/14322/p_HomeCode/0000008164/p_AttFileName/p441%BA%FB%C0%C7%C0%CC%C1%DF%BC%BA[20010826174230].hwp
¡¤ http://myhome.hitel.net/~namjins/dbank/laser/laser.htm