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Turntable Drive Belt 195mm, Black
Turntable Drive Belt 195mm, Black
Offered by ARMCO
Price: 2.76

3 of 3 people found the following review helpful
5.0 out of 5 stars Drive belt review, 22 Nov 2011
This review is from: Turntable Drive Belt 195mm, Black
Finding a suitable replacement rubber belt for older turntables can be a challenge. Make sure that the one you order is not too big. Better a tad too small than too big. I ordered a 195mm diameter belt which should measure 306mm when laid flat (Pi*D/2). The one delivered was actually the wrong belt (it was too big), but the supplier sent a new replacement belt immediately I made them aware of their mistake. Great value for money and excellent service from Motionperformance/Waxacar. Thanks.

The Strangest Man: The Life of Paul Dirac
The Strangest Man: The Life of Paul Dirac
by Graham Farmelo
Edition: Paperback
Price: 7.03

5.0 out of 5 stars Britain's Strangest Genius - P.A.M. Dirac, 17 May 2011
This book is extremely well researched and essential reading for all P.A.M.Dirac fans - funny, poignant and at times sad when describing Dirac's very personal and professional life. It tells the story of Dirac's struggle to lay the foundations of quantum theory during a time of great scientific change, dominated by the likes of Einstein, Bohr, Heisenberg, Pauli, Ehrenfest, Rutherford, Oppenheimer and many other famous names. "Britain's strangest genius" might be a more appropriate accolade, though what is strange to one is perfectly normal to another. The book is filled with anecdotes attributed to Dirac, characterising his unique philosophy as a mathematical physicist. To make any advances in the newly developing theory of quantum mechanics of the 1920-40s required a strange perception of nature, which Dirac, trained initially as an engineer, brought in abundance. A man of few words, his obsession with the view that any theory describing Nature must have inherent "beauty" is an idea that strikes a satisfying chord with many scientists today.

Nightwatch: A Practical Guide to Viewing the Universe
Nightwatch: A Practical Guide to Viewing the Universe
by Terence Dickinson
Edition: Hardcover
Price: 29.99

8 of 8 people found the following review helpful
5.0 out of 5 stars An excellent complement to The Backyard Astronomer's Guide, 6 May 2009
"Nightwatch: A Practical Guide to Viewing the Universe" is an excellent accompaniment to complement to Terence Dickinson's other book (co-authored with Alan Dyer) on popular astronomy, "The Backyard Astronomer's Guide". "Nightwatch" concentrates more on observing techniques, and includes useful charts covering both the Northern and Southern Hemispheres. I particularly like Dickinson's annotated star charts which show at a glance the most interesting celestial objects within a given constellation with useful data and personalized comments. The general level of discussion and easy narrative style is aimed at the practising amateur astronomer, and the high quality paper in a spiral bound hard-cover book format makes it very convenient for use whilst observing outside. The thirteen chapters cover an amazing spread of topics, from the large-scale structure of the Cosmos, through deep-sky objects, the Planets, Sun and Moon, to comets, meteors and auroras. For completeness, a chapter is dedicated to stargazing equipment, but this is covered in much more detail in the Backyard Astronomer's Guide. Overall, the book is to be highly recommended for both novice and experienced astronomers alike.

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