Determine objects’ shadow lengths and direction on the day with the longest shadows of the year (the winter solstice) using the following table of shadow ratios and sun’s azimuth angles for your latitude……

Would you be interested in having access to a usable version of this Winter-Solstice Shadow Ratio calculator? Does it seem like it would be a useful design tool? Send us an email with…

The more aware we are of the seasonally changing paths of the sun across our skies, the more effectively we can design in cooperation with the sun for free passive winter heating &…

Show you: • Where in the sky the sun will be at any time of day throughout the year; • The hours of direct sunlight a building, garden, or surface will receive at…

To access the free sun-path diagrams, please enter your email address below, and you will be taken to a page from which you can download all the diagrams… We will use your email…

Publications, On-line resources, Software, Apps, Products, etc. Publications Passive Solar Architecture Pocket Reference, by Ken Haggard, David A. Bainbridge, and Rachel Aljilani. Earthscan Publications, 2009. This book provides easy-to-use information on a wide…

Solar rights are cultural and legal rights to access and harness the rays of the sun. They can vary widely depending on where you live and local laws… When solar rights enter the…