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10 Amazing Scientific “Facts of Discovery, Invention & Wonder” interesting facts for Class 10 and 12 Part 6

Facts of Discovery, Invention & Wonder – 6

611. Mice, whales, elephants, giraffes and man, all have seven neck vertebrae.

612. The longest chapter in the Bible is Psalm 119.

613. While it was the Chinese who invented gunpowder, they were not the first to develop firearms.

614. Every 5 seconds, a computer gets infected with a virus.

615. Soap was discovered accidentally in West Asia. The soda ash in the fuel got mixed with the fats from the sacrificial offerings, and soap was formed.

616. An ‘electric eel’ stuns its prey by giving it an electric shock. A large – sized eel can produce an electric current measuring about 600 volts, enough to knock a man out.

617. Scientists in Spain and the Sahara have been able to generate electricity by making the sun’s hot rays fall on solar cells. This electric power is then used to drive pumps and drilling machines that tap the vast reserves of water deep below the sands. With the help of the sun’s rays and chemicals, Israel has been able to obtain good crops of algae (a simple vegetation).
618. The first ever drawings were done on the walls of caves more than 20, 000 years ago. Not only that, they were even painted in different colours using pigments from natural sources such as clay and iron.

619. Zero, in ancient India was represented as a circle with a dot in the centre and was called ‘Shoonya’. As it travelled to different lands, it acquired different names until it came to be called ‘ zero’. Zero does not mean ‘nothing’. It is a number. Bhaskara, an ancient Indian Mathematician , claimed that any number divided by zero is infinity. Zero led to the thinking of numbers less than zero itself. It was also in India that the system of fixing places for units, tens, hundreds, etc., which is called position value rotation today, was developed. For many years, it was thought that the Arabs invented the Indian numbers, including the zero. But the Arabs learnt these from India and then spread them to Europe.

620. Almost 2,000 years ago, an Indian surgeon, Su Sruta used cheek skin to help create new noses for his patients. In 1870, a Parisian Surgeon, Dr Reverdin, had introduced modern free skin grafting.

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