Who was Marco Polo ?

The Italian traveler , explorer and writer . He was born in Venice( 1254 ) and died in (1324) , who was the first European to visit China . He also journeyed to India , and other countries of the far East and published records of his travels . He travelled through Asia along the silk road between (1271-1295) . Marco Polo travelled first when he was 17 , he travelled through silk road with his uncle and father as they reached China , Marco entered the court of powerful Mongol ruler Kublai Khan (Grand son of Changez Khan) , Marco Polo’s father asked Kublai Kahn for opening of the routes for trading between China and Europe but Kublai khan did not trust him , So that Marco was given as slave to Kublai khan by his father , but the interesting thing is that Marco‘s father was actually working for the Pope and he was also thief of silk worm .

Kublai khan was the first khan to accept all the foreigners and founder of the Yuan Dynasty . He was also first Mongol to rule over china . Kublai khan saw the wisdom of Marco Polo. So he announced Marco as advisor and also dispatched him on many trips to help administer the realm . Marco helped Kublai khan in many ways in which he helped khan to bring to an end the song dynasty of China and captured the great city , and also defeated the Pope . Marco polo also came in help to secure khanate of Kublai khan in Kurrultai (Political and military council) . Marco Polo remaind abroad for 24 years .

Famous Books – The Book of Wonders : Travels : Silk Road : Travels in the land of Kublai khan

What is vector group of transformer?

Vector Group of Transformers • A vector group is the International Electrotechnical Commission (IEC) method of categorizing the high voltage (HV) windings and low voltage (LV) winding configurations of three-phase transformers. • Vector group is a connection of primary winding , secondary winding and an electrical angle difference . • The vector group designation indicates the windings configurations and the difference in phase angle between them. The three phase transformer windings can be connected several ways. Based on the windings’ connection, the vector group of the transformer is determined. • The transformer vector group is indicated on the Name Plate of transformer by the manufacturer. The vector group indicates ...

Battle of Thermoplyae 480 BC

Leonidas was a warrior king of Sparta, one of the most dominant ancient Greek cities. He was not destined by birth to become king at all, and did so only because his older half-brother Cleomenes died without male issue. During his reign, King Xerxes of Persia sought to conquer all of Greece, after his father’s failed attempt. By 480 BC, Xerxes had built up an enormous army of some one hundred and fifty thousand men and a navy of six hundred ships. The invasion led to the Battle of Thermopylae, which is considered one of the most famous battles in European ancient history. Unlike other battles, however, it was not a victory for the Greeks, but a defeat. Its fame is derived from being one of the most courageous last stands by the vastly outnumbered defending army of Greek city states led by King Leonidas of Sparta against the invading Persians under King Xerxes. The Greek fo...

Eclipses

What is Eclipse? . When the light of the sun or the moon is obscured by another body the sun or moon is said to be in eclipse . Lunar Eclipse . When the earth comes between the sun , the shadow cast by the earth on the moon results in a lunar eclipse . Lunar eclipse occurs only on a full moon day but not on every full moon day . Solar Eclipse . When the moon comes between the sun and the earth , it causes obstruction of the sun's light when viewed from earth , and is called solar eclipse . A solar eclipse occurs on a new moon day when the moon is in line with the sun . However , solar eclipse does not occur on every new moon day .

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