Essays on Tungsten

<<Author>> <<Date>> Apple is a global corporation which is well known for its practices in sustainability and ethical behavior. However, this reputation was not built easily. Apple had to invent and re-invent their supplier conduct and sustainability practices over the years to gain this reputation. Today, Apple’s Supplier Code of Conduct ensures that all suppliers create working conditions which are safe, respect workers and care for the environment (Apple, 2016). Their strict practices ensure that suppliers obey the rules, even if it is above local laws. Apple has a Supplier Responsibility Standards ...

The periodic table of elements, by far, stands among the most notable discoveries in the history of chemistry. Nowadays, probably everyone who has ever heard about chemistry heard about the periodic table of elements. Its implications on the scientific world are so enormous that it has even leaked out to the general public and have become associated with the chemistry itself. This is not surprising considering the scientific strength of this instrument. Using the periodic table, many characteristic properties of the elements can be predicted and many phenomena can be explained. This discovery put so much scientific knowledge together, ...

Burma is heavily endowed with resources both renewable and non-renewable. Particularly, the country has the forest resource that has been over the years a major player in the economic growth of the country. Burma has different types of forests such as tropical rain forests and deciduous among many others. The forest resource is a source of employment for thousands, a source of livelihood and a major foreign exchange earner. For the rural dwellers in Burma, the forest resource is a source of food, fuel, shelter and also livelihood as they engage in the trade of forest products. The demand ...

Invented and patented by Thomas Edison in 1879, the incandescent bulb comprises of a wired filament placed inside a glass bulb (“The History”). When electricity is provided to the filament, it heats up thereby making the bulb glow and emit light (“Incandescent, LED”). The wired filament of the incandescent bulb was initially made using carbon obtained from a cotton thread that was uncoated. This filament gave the bulb a lifespan of just 14.5 hours. Later, the carbon filament was made using bamboo, which gave the bulb a longer lifespan of up to 1200 hours (“The History”). Much later, in ...

Introduction

Ballpoint pen, also called biro, after its founder, Laszlo Biro, is a writing tool that has a small ball bearing for the transfer of the stored in a cartridge onto the writing surface. Its internal chamber is filled with an ink which flows to the tip as a result of the rolling action of its major parts. Its sphere is made of carbide, steel, brass, tungsten or any other non deformable durable material with a diameter ranging from 0.5- 1.2 mm. the popularity of this pen has grown due to the various improvements it has witnessed since its invention. It’s made up of ...