A Complete Breakdown of the Freestyle Swimming Stroke

As most people know, freestyle is the fastest stroke, most efficient stroke, as the body maintains a streamlined position with the arms and legs are able to apply constant propulsive forces. The arms perform an alternating action while the legs perform a continuous flutter movement. Body Position The body position needs to be streamlined and…

History and Usage of Tin

Tin is a chemical element located in the period table. The symbol for Tin is Sn which is derived from Tin’s Latin name, stannum. The atomic number for Tin is 50. Tin is a soft, malleable metal that resists corrosion well and can be found in a number of alloys. History: Tin is one of…

Green Dental Office Design – Improving the Lighting

One of the biggest areas of concern in dental office design is making sure that there is proper lighting, especially in the operatories. Traditionally, fluorescent ceiling lighting has been used to provide general purpose lighting. One of the challenges, however, is to do so with color correcting lamps (bulbs) so that the lighting does not…

Know the Mechanism of Led Lighting

LED’s are largely used as signal lamps in many appliances and more and more people are increasing using LED lighting. LED means light emitting diode which belongs to semiconductor category. It originated in 1960 when it was used for producing low intensity lighting, but nowadays it is primarily used for ultraviolet lighting delivering powerful brightness…

Exterior Doors – Wood, Fiberglass Or Steel?

There are many choices when it comes to exterior doors for your home. The three most popular door types are wood, fiberglass and steel. Factors such as where you live, the exact style or design you want and your budget will all affect your decision. If you are thinking about replacing your exterior front entry…

Metal Roofing Materials – Advantages And Disadvantages

Over the years, more and more home owners and home builders have become aware of the benefits of using metal roofing materials. This is proven by studies conducted by the National Roofing Contractors Association. Metal roofing usage has increased over the past ten years. Because of this, more metal roofing materials are distributed in the…

Rock Climbing Techniques – Avoiding a Flash Pump

It’s an old, familiar, rock climbing story. “I went to Millstone (a cliff in the UK’s Peak District) and headed straight for Bond Street (a classic HVS/5.8 climb). I was worried that, if I didn’t get on the climb right away, I’d wimp out.” “So how did it go?” I asked curiously. “A horror show,”…