Nanotextured Surface Dramatically Improve Solar Cell Efficiency. The Engineer posted on January 22, 2015 | | 4074 views. Reducing the amount of sunlight that bounces off the surface of solar cells helps maximize the conversion of the sun's rays to electricity, so manufacturers use coatings to cut down on reflections.
The main entry door must conform to IRC specifications. Exterior doors often are the most visible parts of a house and like interior doors, are available in standard sizes. They range in width from 2 feet to more than 3 feet, and in height from 6 feet, 8 inches to more than 8 feet. Standard thickness is 1 3/4 inches.
When Metric units were made compulsory in Australia , the common standard for interior household doors was set at 820mm which will now apply forever. The opening for a standard door is about 4mm extra, and the 'Door Stops' which are always 10 or 12mm thick each side, reduces the width of the opening to about 800mm .