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What Is Radar and Its Application?
The word radar is an acronym for Radio Detection And Ranging created in 1942. This acronym replaced the British initials RDF (Radio Direction Finding).…
How Rubber Bands Are Manufactured?
Rubber bands start of life as blocks of spongy-type material that’s basically just sap from rubber trees. For some reason, they dye it yellow,…
Who Was Xerxes the Great?
Xerxes I (c. 518 – August 465 BC), commonly known as Xerxes the Great, was the fourth King of Kings of the Achaemenid Empire, ruling…
Who Was Saint Francis Xavier?
Saint Francis Xavier was a Spanish missionary born on April 7, 1506, in a castle near Sangüesa in Navarre (part of present-day Spain). What…
How Did the Black Prince Got His Name?
Edward, prince of Wales and Aquitaine, duke of Cornwall, Earl of Chester, founder knight of the Order of the Garter, hero of Crécy, victor…