A lens is a transparent refracting medium, bounded by one or two surfaces, one or both of which are usually curved. Early lenses were made of glass but, more recently, plastic materials are being used. Such a device allows a beam of light rays to converge or diverge on passing through it. Traditionally the history…

Contrary to belief, marketing doesn抰 really begin with an idea or a product, rather it starts with the people or the customers who are willing to pay for the product or service being offered. A lot of business owners make the mistake of focusing on their products when creating the marketing campaign rather than on…

Durability – Confident bought gold bangles know that the purer the your old watches content, the more likely may be the bangle to bend it’s shape. It seems silly to fund a gold bangle but useful purity levels low. Sterling silver wrist ornaments offer virtually no such problems. This durability extends to silver jewellery rings…

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