![]() ![]() What it implies is that, direct 90° degree angle provides more intense light than the inclined one. You will now observe that the size of the lit area has increased, but the intensity or brightness of it has reduced. Now, slowly reduce the angle to make it less direct. In a darkened room, switch on the flash light on a surface, at a direct 90° degree angle. To understand it more clearly, let’s do a simple demonstration using a flash light. This makes the days longer and it makes the summer sun more intense. The summers are hotter because, the sun’s path is higher in the sky. ![]() Also, when it is summer in the northern hemisphere, it is winter in the southern hemisphere. We all know that summers are hotter and winters are colder. Let’s begin by trying to understand the earth’s rotation about its axis, its orbit around the sun and the four seasons. But how to find the sun motion relative to a site? Meaning, we need to chart the sun’s position throughout the year. Beehives, chickens, fish ponds and livestock, all appreciate sunshine in winter and shade in summer.įor a given site, if we can create a chart that shows the areas of year round shade and year round sunshine, one can plan and design the various elements for optimal functioning. Even animals can derive benefits from thoughtful solar designs, as they too like to have winter warmth and summer shade. Houses outside the tropics need to be designed/oriented to make more winter sunlight enter the living spaces, while for those in the tropics, they should be designed/oriented to have more shade and cooler air entering the living spaces. Other elements of a permaculture design like solar panels are also needed to be placed thoughtfully to obtain maximum exposure to the sun to harvest as much energy as possible. A good appreciation of the earth’s rotation about its axis, its revolution around the sun and the consequences of these motions on the sun’s position and availability at a given location on the earth’s surface, is essential for maximizing plant productivity, harnessing maximum energy, minimizing energy usage and maintaining a comfortable indoor environment for humans and animals alike.įor proper functioning and productivity gardens, greenhouses and orchards should be placed at specific locations based on the adequate availability of sunshine for the parts of the year in which the plants are growing or fruiting. Understanding the sun’s motion relative to a site is an important aspect of a good permaculture design, as various elements like plants, animals and solar devices depend on sun for their functionality. ![]()
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