tag:blogger.com,1999:blog-8073878804223260414.post6493870453326251850..comments2023-09-10T18:39:33.070+08:00Comments on Physics for O-Level: Refraction of WavesMR. Tan (tutortan1@gmail.com)http://www.blogger.com/profile/14597183604923036693noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-8073878804223260414.post-71631979121123033172013-05-30T10:02:27.976+08:002013-05-30T10:02:27.976+08:00I was struggling with waves in class, this page wa...I was struggling with waves in class, this page was very helpful, thanks so much, now I can show my friends this site because they are struggling too :P Anonymoushttps://www.blogger.com/profile/10557149353731422114noreply@blogger.com