The cornea and lens in the eye act as the camera lens. The retina is similar to the film. If the image is not focused properly, the film (or retina) receives a blurry image. The cornea also serves as a filter, screening out some of the most damaging ultraviolet (UV) wavelengths in sunlight.
Hardie plank siding is a premium brand of cement board siding (also known as fiber cement board siding) produced by the James Hardie Company.ardie plank can be purchased with a wood-grain look, a plain smooth look or a stucco type finish. Hardie plank also comes in simulated cedar shingle planks.
1 For a home with 1,500 exterior square feet, that s a total cost of approximately $15,000. 2  At this price, Hardie board is roughly 40 percent more expensive than vinyl siding. 3  This is mostly due to the fact that fiber cement is heavy (around 5 times heavier than vinyl) and therefore more labor-intensive.