This book provides a broad overview on the different aspects of solar energy, with a focus on photovoltaics, which is the technology that allows light energy to be converted into electric energy.Renewable energy sources have become increasingly popular in recent years, and solar is one of the most adaptable and attractive types – from solar farms to support the National Grid to roof panels/tiles used for solar thermal heating systems, and small solar garden lights....

This short technical paper describes a technology method for restoring old buildings at very low cost. These restored structures can be used to provide housing for the homeless. It implies a method for architectural preservation for any structure. An example structure is provided along with the basic calculations. Each reader must comprehend that our universe literally blinks, off and on, more than 1 trillion times each second.

The Game of Logic by Lewis Carroll. This book has all the illustrations of the original.The Game of Logic, described by Lewis Carroll—author of Alice in Wonderland—in 1887 consists of discussing the meaning of propositions like "Some fresh cakes are sweet," and is an instructive introduction to the concepts of logic. The game takes place in a world divided into four quadrants. In the northwest quadrant, the cakes are fresh and sweet, in the northeast, they are fresh and not-sweet, ...

This invaluable glossary of terms can be used alongside Doug's brilliant new book, How to Start a Creative Business, a must-have for any creative-type wanting to start their own venture. This glossary of terms provides you with the basic tools for starting a sustainable, viable, creative business. It shows you that the 'business terms' that you need to know for your creative business do not have to be scary or confusing, they are all easy to understand and will be invaluable for s...

The complete dungeon master package contains everything you need to enhance your table top adventures. This FULL download package, contains the following: LONG WALL, SHORT WALL, DOORS, WINDOWS, and STAIRS. AND a SPECIAL CURVED WALL. All you have to do is print out the files, cut, and fold.

This version contains printable walls for your Dungeons and Dragons, Gurps, Warhammer, Rifts, D&D, or other RPG's. Just print on card stock paper cut, fold, and enjoy.The quality of this free version will be very grainy compared to the version offered on the quickquests website. This version also only contains the Long Wall, Short Wall, Door system, and stairs.The full version contains Extremely High resolution versions of the above walls as well as a square wall, and sever...

In Leviathan, Hobbes set out his doctrine of the foundation of states and legitimate governments – originating social contract theory. Leviathan was written during the English Civil War; much of the book is occupied with demonstrating the necessity of a strong central authority to avoid the evil of discord and civil war. Beginning from a mechanistic understanding of human beings and the passions, Hobbes postulates what life would be like without government, a condition which he calls the s...

Beowulf was composed by an anonymous Anglo-Saxon poet. Francis Barton Gummere translates this beautiful poem. Beowulf is an epic poem. The main character, Beowulf, proves himself a hero as he battles against supernatural demons and beasts.

Harold Speed’s *The Practice and Science of Drawing* stands as a timeless bridge between artistic intuition and disciplined technique, offering readers a rare blend of classical wisdom and practical instruction. This book is not just about learning how to draw—it is about understanding why drawing works. Speed carefully unravels the deeper principles behind line, tone, rhythm, and composition, guiding aspiring artists to see beyond the surface and into the structure of visual reality. His ...

Do you want to become more fluent in English?Do you want to understand everyday language and not just 'textbook' English?I taught English for many years and saw that many students get stuck at the high beginner/intermediate stage. They learn the basics and then can't move forward. This problem used to really frustrate me because I had lots of excellent students who were just stuck and eventually they would give up.I thought for a long time about what was wrong and th...

George Berkowski, serial entrepreneur and one of the minds behind the internationally successful taxi hailing app Hailo, is the expert on mobile apps. In this free digital ebook companion to How To Build a Billion Dollar App, he includes an outline of the entire book and the chapters from step 1 of the journey, 'Building and Founding a Team', 'Validating Your Product' and 'Raising Seed Funding'. Through his experience, research and insights, readers will receive the begin...

Plato was a philosopher in Ancient Greece. He was an essential figure in the development of philosophy, especially the Western tradition, and he founded the Academy in Athens, the first institution of higher learning in the Western world. Plato's dialogues have been used (and are still used) to teach a range of subjects, including philosophy, logic, ethics, rhetoric, religion and mathematics. His lasting themes include Platonic love, the theory of forms, the five regimes, innate knowledge,...