Variable stars are fascinating objects to observe; found all over the sky, they change in brightness over time and can be seen with even the most basic of equipment. Variable star astronomy is one field in which amateur astronomers can still make significant contributions to science and in this high[...]

The puzzles, either 6 x 6 or 9 x 9, look like Killer Sudoku games, but in addition to numbers, players also contend with math operators (+ - x /) within "fences" on the puzzle. Players reach the total at the top left of the fenced area by using the operator on all the numbers within it. Although the[...]

It was a lucky twist of fate when in the early 1980's David Levy, a writer and amateur astronomer, joined up with the famous scientist Eugene Shoemaker and his wife, Carolyn, to search for comets from an observation post on Palomar Mountain in Southern California. Their collaboration would lead to t[...]

Levy processes form a wide and rich class of random process, and have many applications ranging from physics to finance. Stochastic calculus is the mathematics of systems interacting with random noise. Here, the author ties these two subjects together, beginning with an introduction to the general t[...]

Art and Authenticity explores a range of questions around the ideas of authenticity, originality and replication in art. The authors move far beyond the fundamental question of 'Is it genuine?' to themes and definitions surrounding authenticity as a concept operating across different periods and con[...]

Nicolas "Sparth" Bouvier, has been an active Artistic Director and Concept Designer for the gaming industry for over 15 years. In Structura 2, he delights us with what he has been imagining for the last three years since the release of his first best selling book, Structura. This visually stunning b[...]

David Levy?s entertaining, well-researched book is aimed at the amateur enthusiast who likes to learn enjoyably. Beginning with advice on binoculars and telescopes, and how to observe the night sky effectively, the author goes on to describe thoroughly the field of variable star observation, a field[...]