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Usually the size and the purpose. The period of time sometimes distinguishes the name.Modern navy combat ships are generally divided into seven main categories. The categories are: Aircraft Carriers, Battleships, Cruisers, Destroyers, Frigates, Submarines, and Amphibious assault ships. There are also support and auxiliary ships, including the minesweeper, patrol boat, and tender. During the age of sail, the ship categories were divided into the ship of the line, frigate, and sloop-of-war. Frigate Frigate is a name which has been used for several distinct types of warships at different times. It has referred to a variety of ship roles and sizes. From the 18th century, it referred to a ship smaller and faster than a ship-of-the-line, used for patrolling and escort work rather than fighting fleet actions. In modern military terminology, the definition of a frigate is a warship intended to protect other warships and merchant marine ships and as anti-submarine warfare (ASW) combata

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The 101 Most Useful Websites

June 18, 2012

Here are my picks for the 101 most useful websites of the year. The Most Useful Websites and Web Apps The sites mentioned here, well most of them, solve at least one problem really well and they all have simple web addresses (URLs) that you can easily learn by heart thus saving you a trip to Google. 01. screenr.com – record movies of your desktop and send them straight to YouTube. 02. bounceapp.com – for capturing full length screenshots of web pages. 03. goo.gl – shorten long URLs and convert URLs into QR codes . 04. unfurlr.come – find the original URL that’s hiding behind a short URL. 05. qClock – find the local time of a city using a Google Map . 06. copypastecharacter.com – copy special characters that aren’t on your keyboard. 07. postpost.com – a better search engine for twitter. 08. lovelycharts.com – create flowcharts, network diagrams, sitemaps, etc. 09. iconfinder.com – the best place to find icons of all sizes. 10.

How does a search engine fetch answers to your queries in less than second?

July 25, 2012

Ever wondered how does a search engine fetch answers to your queries in less than second? Google says it's a mixture of science, creativity, experimentation and cold, hard maths. This is how it works:

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