Metalworking: Transforming Our World

Tools, for centuries, have made humans very unique on planet Earth. No organisms that we know of have been able to match the skill level humans have achieved regarding tool building and other creations. Metals have been used for centuries for that purpose. The field of studying the physical and chemical behavior of metallic elements…

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Understanding Compact Fluorescent Lighting (CLFs)

Compact Fluorescent Lighting (CFL) has been so successful in replacing the traditional light bulbs (incandescent) and fit in existing light fixtures to produce more energy-efficient lighting. Edward Hammer developed the spiral shaped bulb to try to pack in enough tube yet allow enough space between the coils to decrease blockage of light. Today, Hammer’s spiral…

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Tips on How Best to Remove Wallpaper

Before you begin, remember that wallpaper removal can be labor intensive and can cause severe damage to your walls if it is not done correctly. Most removal damage is due to the lack of a wallpaper primer before the walls were papered, resulting from the glue being absorbed into the wallboard. The top layers of…

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