FULL COLOR. 24 pages. Extract on Light-beam Alignment from book Relatively Simple, 2nd Edition. This extract from Relatively Simple gives a taste of the book's scope. The chapter on Light-beam Alignment shows that electromagnetic radiation (em) passes direct from a fixed source to a target (observer) also fixed in the same reference frame - for example, both fixed to Earth - irrespective of their, combined, movement as part of the movement of that reference frame. That important chapter is also included in the separate extract dealing with Starlight Aberration. For Relatively Simple and other works search Lulu.com for Geoff Robinson or direct via tinyurl.com/relativelysimple or bit.ly/relativelysimple