tag:blogger.com,1999:blog-8644055803045139532.post3335293137836734924..comments2023-09-10T17:34:24.640+07:00Comments on Frazer does Physics: 3.20 Optical fibresUnknownnoreply@blogger.comBlogger1125tag:blogger.com,1999:blog-8644055803045139532.post-27045420724718283022011-06-06T16:05:32.851+07:002011-06-06T16:05:32.851+07:00"because the waves travel at the speed of lig..."because the waves travel at the speed of light; 300,000,000m/s"<br />Actually slightly less than this because of the refractive index of the optical fibre<br />300,000,000m/s is the speed of light in a vacuum - it travels more slowly in other media by a factor which is equal to the refractive index of the mediumMatthttps://www.blogger.com/profile/09659941214768646522noreply@blogger.com