Customer Review: The book 'The Shack' was written with unusual insights into the saving grace and showing the presence of the Lord at work in all things. I know that strong direction from the Lord and it is awesome. I treasure the book and its depth of meaning. The Lord has gifted the author with deep insights and... more info
Customer Review: This book is an excellent introduction to optics; from basic ray tracing, f-stops, color correction, etc. It has information on binocular, telescopes, mirrors and other items of daily interest. Highly recommended.
