10 Amazing Scientific “Facts of Discovery, Invention & Wonder” interesting facts for Class 10 and 12 Part 2

Facts of Discovery, Invention & Wonder – 2

571. Formerly called Kiritimati, the Christmas Island in the Indian Ocean is 52 square miles. It was sighted and named on Christmas Day in the year, 1643 by British sailor, Capt William Mynors. The phosphate- rich island is now an Australian Territory.

572. Alexander Graham Bell, the man who invented the telephone, was originally an instructor for deaf children and invented the telephone to help his hearing- impaired wife and mother to hear.

573. Ray Ban sunglasses were originally created in the 1930’s for fighter pilots of the U.S. Army Air Corps.

574. The AK-47 assault rifle is named after Mikhail Kalashnikov, a Russian inventor and soldier.

575. People have been cleaning their teeth since the first tribes lived in Africa and Australia. It was the Chinese who invented the bristle brush toothbrush.

576. In the medieval ages, sometimes, secret messages were tattooed on the shaven heads of salves. After the hair had grown, the slave would leave for his destination with the message concealed. There , the head would be shaved again and the message read.

577. French fires were not at all invented in France, nor were the Arabic numerals invented in the U.A.E. Both were Indain contributions.

578. The first Christmas card was designed in England by J.C. Horsley in 1843 for his friend, Sir Henry Cole. As a greeting card, it carried an illustrated message of goodwill to the receiver. Christmas cards became popular as a form of greeting with the invention of printing and the establishment of the postal system.

579. The Chinese who discovered silk- making, kept it a secret for centuries.

580. The kite was first created by the Chinese. Not merely a plaything, it has also proved useful in scientific experiments and in other fields. Marconi, who discovered the radio, used a kite as an antenna.