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.
How Much Does Hardie Board Cost? The James Hardie company is known for its commitment to fiber cement products. Unlike vinyl, aluminum, or wood, Hardie board is a durable siding material consisting of sand, plant fibers and cement. When mixed and formed into lap siding, fiber cement is nearly impenetrable to weathering and pests.