“Telescopes and Techniques” has proved itself in its first edition, having become probably one of the most widely used astronomy texts, both for numerate amateur astronomers and for astronomy and astrophysics undergraduates. The first and second editions of the book were widely used as set texts for introductory practical astronomy courses in many universities. This book guides the reade…
“Manned Spaceflight Log” discusses over 40 recent spaceflights from September 2006 through September 2012, a time of great change in human spaceflight history. Following on from “Praxis Manned Spaceflight Log 1961-2006,” the authors continue the story until the end of September 2012, with new chapters detailing the development and accomplishments of human spaceflight, expanded tables an…
Classic telescopes are of interest to amateur astronomers for a variety of reasons. There are the dedicated collectors, but there are also many amateurs who love the nostalgia they inspire. These telescopes "feel" different from any contemporary telescope and perhaps have a unique ability to reconnect the owner to a bygone age of craftmanship. This book takes a look at traditional telescopes bu…
“An Introduction to Waves and Oscillations in the Sun” is intended for students and researchers who work in the area of solar and astrophysics. This book contains an introduction to the Sun, basics of electrodynamics, magneto-hydrodynamics for force-free and current-free fields. It deals with waves in uniform media with relevance to sound waves and Alfven waves, and with waves in non-unifor…
No Inv.: 1482/Perp/79/1c
No Inv.: 175-176/BD/Perp/86/2c
No Inv.: 1798/S/Perp/88/1c
No Inv.: 1332/Perp/79/1c