50 SCIENCE TRIVIA 50 Interesting Science Facts 1 – The speed of light is generally rounded down to 186‚000 miles per second. In exact terms it is 299‚792‚458 m/s (equal to 186‚287.49 miles per second). 2 – It takes 8 minutes 17 seconds for light to travel from the Sun’s surface to the Earth. 3 – 10 percent of all human beings ever born are alive at this very moment. 4 – The Earth spins at 1‚000 mph but it travels through space at an incredible 67‚000 mph. 5 – Every year‚ over one million
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it‚ so it can be used in moisture rich environments. One way of achieving this is by applying Briwax to the surface of the wood using a small cloth or a ball of wire wool‚ and rubbing it into the grain with a circular motion. -Steel Steel is an alloy of iron and a small amount of carbon. Specimens of steel have been found which date back to over 4000 years‚ and has been a major staple in the industry since the 17th century. Polish can be applied to steel to enhance its shiny properties to make
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temperature. The element gallium is a byproduct of the production of aluminum and zinc. Most gallium is extracted from the crude aluminum hydroxide solution of the Bayer process. Gallium easily bonds with most metals and is often added to low melting alloys. Gallium has the second largest liquid range of any element and is one of the few materials that are near liquid form. Gallium also expands as it
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duty screws designed for metal to timber connections‚ or to join heavy timbers. Rivet Riveting is a way of joining metals or some other materials. Rivets are made from malleable metals such as iron‚ steel‚ copper‚ brass‚ aluminium or aluminium alloys. Screw eye (eye screw) Screw with a looped head. Larger ones are sometimes call lag eye screws. Designed to be used as attachment point‚ particularly for something that is hung from it. Spring toggle For fixing to cavity walls and ceilings
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Contents •Introduction. ……………………………………………………3 •What is MRAM? ………………………………………………4 •Methods of data storage………………………………….6 •Methods of data retrieval…………………………………9 •MRAM using AMR materials……………………………11 •MRAM using GMR materials……………………………14 •Competing Non-Volatile Memories…………………17 •MRAM Advantages and Applications……………….18 •Research and Developments…………………………….20 INTRODUCTION In 1984 Drs. Arthur Pohm and Jim Daughton‚ both employed at that time by Honeywell‚ conceived
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CATHODIC PROTECTION P E FRANCIS CONTENTS 1 2 3 INTRODUCTION............................................................................................................2 PRINCIPLES OF CATHODIC PROTECTION..........................................................3 METHODS OF APPLYING CATHODIC PROTECTION........................................5 3.1 3.2 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 IMPRESSED CURRENT..........................................................................................5 SACRIFICIAL
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Effect of cold rolling on bonding tensile of 7075 alloy The present study reports the effect of cold working on bending and tensile behavior of Brass‚ Copper‚ Aluminium. A series of experiments involving cold rolling (58% cold work) have been conducted for those three materials. The Vickers number of hardness for cold rolled specimens can be show very clearly that it has increasing up the number itself likewise the number of thickness reduction which also increasing. Which its number of Vickers
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the body. Some of the fundamental parts of the pacemaker such as the casing‚ battery‚ circuitry and the leads are all made with biocompatible materials or non-toxic materials. Usually‚ the casing along with the lead is made of titanium or titanium alloy‚ but the lead is further insulated by a polymer. The circuitry or all the electrical wires are usually made of modified silicon semiconductors and the battery used in a pacemaker is commonly a lithium-ion battery.
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energy which is conducted across the arc through a column of highly ionized gas and metal vapors known as a plasma. GTAW is most commonly used to weld thin sections of stainless steel and non-ferrous metals such as aluminum‚ magnesium‚ and copper alloys. The process grants the operator greater control over the weld than competing processes such as shielded metal arc welding and gas metal arc welding‚ and allows for stronger‚ higher quality welds. However‚ GTAW is comparatively more complex and difficult
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of inventory increase. Since the company only have one machine there are a lot of unnecessary waiting time at stops and reparations unlike they had got two machines. In the melting work centre the workers also observe the process and wait for the alloy to melt.Then the workers are waiting for the right temperature in the furnace for 20 min. Unused employee creativity Since it is a lot of waiting time in the system some of the workers creativity is unused. The casting manager has responsibility
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