Amateur Telescope Making in the Internet Age: Finding Parts, Getting Help, and More
Added by: alexa19 | Karma: 4030.49 | Non-Fiction, Other | 25 October 2010
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Amateur Telescope Making in the Internet Age: Finding Parts, Getting Help, and More
Building an astronomical telescope offers the amateur astronomer an exciting challenge, with the possibility of ending up with a far bigger and better telescope than could have been afforded otherwise. In the past, the starting point has always been the grinding and polishing of at least the primary mirror, a difficult and immensely time-consuming process. But now that the Internet has brought us together in a global village, purchasing off-the-shelf goods such as parabolic mirrors, eyepieces, lenses, and telescope tubes, is possible.
This series of books always have excellent professional writing and illustrations. This is no exception. Illustrations are often better than photos because the artist can show us the crucial functional parts while editing out superfluous details.
Scroll Saw Castles - How to Make Collapsible Castles on Your Scroll Saw
Three-dimensional-and collapsible-castles can be made with a scroll saw with the help of these innovative patterns and techniques. The designs are cut flat and then layered to create depth. Instruction is given on choosing the best wood, as well as how to best cut the various parts of the projects, such as roads, drawbridges, spires, and heart-shaped windows.
The scientifi c study of the eye is believed to have originated with the Greek physician Herophilus, who lived from about 335 to 280 BCE. Indeed, from his work came the words that we use today to describe the various parts of the eye, including the words retina and cornea.
