Portable Hardness Testers, as the name suggests, are portable moveable instruments that are used for on-site hardness measurement tests. The advantage of portable hardness testers over conventional stationary testers is that while the latter require the sample to be brought to the testing apparatus, the portable testers can be taken to the site for the hardness test. This facilitates hardness testing of materials and even that of finished products. In the latter case, it is mostly a quality-test . Working Principle Of Portable Hardness Testers Portable Hardness Testers are based on two different principles. The first method, known as the UCI or Ultrasonic Contact Impedance method, measures the frequency shift of a resonating rod with a Vickers-diamond tip. The resonating or reverberating effect is brought about by causing the diamond to penetrate into the test material through application of a specific test weight. The frequency shift is then assessed and...

If some people had their way, you d be driving a small hybrid powered vehicle with no choice of other types of cars to own. While a gas-electric hybrid is fine for some folks, the majority of American drivers want the power and responsive of a trusty internal combustion engine and are not interested in being told which kind of car they must drive. Yet, saving on gas is a universal concern one that nearly every driver considers each time he or she stands at the gas pump. I doubt that there are many folks who give no thought to paying 3 per gallon for gasoline and fill ups costing 40, 60, even 80 or more are no fun. While you can t control OPEC, you can squeeze more mileage out of your current vehicle thereby reducing your pain at the pump. Read on and we ll explore several sensible and sane fuel saving options that can help you today: Easy on the Brakes. If you slam on the brakes, chances are you also press the pedal to the medal. Jackrabbit starts will get you...

The autistic basketball player Jason McElwain is a current student at Greece High School located in Rochester, New York. He recently became a basketball star when his coach Jim Johnson allowed him to play in the team s last game of the year. McElwain took his chance and scored 20 points during four minutes, he missed two shots on the first minute, but it seems it made him stronger as Jason hit six straight 3-pointers and another baske, in the remaining 3 minutes. Coach Johnson has been the manager of the varsity basketball team at Greece Athena High School. Johnson said he has coached a lot of wonderful kids during his career, but he had never seen such an amazing performance. More than a star, McElwain showed all youngsters there is no impediment to reach any dream or goal. He literally felt at the top of the world doing what he wanted and enjoying every single second of the game. In today s world, there are too many disabled people that practice a specific...