Ready-Updates 4U

The World's first Automated Teller Machine (ATM) was installed on June 27, 1967 by the Barclays Bank in England . It was inaugurated by the English actor Reg Varney. The ATM at Barclays was developed by John Adrian-Barron. But it was not like today's cash machine. ATM Machine -Representative Image In 1969, the ATM that was installed in USA was called the Docuteller. Because it was manufactured by the Docutel company. At that time, it had a sizeable steel body. In this context, we have to remember Luther George Simjian who invented a less successful prototype ATM in 1939. It was installed in New York by the City Bank of New York, till it's removal after six months. In 1987, HSBC (The Hongkong and Shanghai Banking Corporation Limited) installed India's first ATM in Mumbai. The Union Bank of India installed India's first talking ATM at the Blind People's Association, Ahmedabad, on June 6, 2012. A gold ATM, which delivers gold coins, was also launched at Hyderabad ...

The luxurious ship, Titanic, had met with her tragic end in 1912, on her maiden voyage, from Southampton (UK) to New York (USA). More than 1500 people died in this giant ship disaster. Where is the Titanic now? It is in the " midnight zone " of the North Atlantic Ocean, about 740km away from the coast of Newfoundland, Canada. The wreckage of the ship is 3.8 km below the surface. It was first located by the oceanographer Dr. Robert Ballard in 1985 and in 2012,(on the 100th year of the tragedy) UNESCO declared it as World Heritage Site. Why can't it be taken out? The deep ocean is too dark since sunlight is fast absorbed by seawater. Beyond 1000 meters, it is pitch dark and the area is rightly nicknamed as the midnight zone. It is a herculean task even to reach there. Then, how can the jumbo-sized ship parts to be pulled out? Imagine that an expert team reached the seabed with enough lights and equipment- even then, it is not possible. Because underwater currents are too t...

The ocean water is dynamic in nature. It is influenced by physical properties such as temperature, salinity, density etc. and also affected by external factors or forces from Sun, Moon and winds. The major movements of ocean waters are Ocean Currents, Deep Water Currents & Tides. Ocean Currents: Flow of oceanic water in one direction. Ocean currents are mainly surface currents or deep-water currents. Surface Currents: It is primarily wind driven and move horizontally. Solar radiation, gravity and Earth's rotations also influence them.  Based on temperature, ocean currents can be classified into two. Warm currents and  Cold currents Warm Currents: They carry warm waters from the tropics to the cold polar regions. They are usually seen at the western boundary of oceans. These are fast moving, narrow and deep currents, thus known as 'Western Boundary Currents'. E.g. Gulf Stream in the Atlantic Ocean, Agulhas Current in the Indian Ocean and Kuroshio Current...

Long March from Jiandxi to Shanxi. The 10,000 km long journey in China, that started under the leadership of  Mao Zedong  from Jiangxi to Shaanxi in 1934 is known as the Great Long March. It was not actually a single march, but a series of March undertaken by the Red Army. Nearly 1,60,000 Red Army volunteers and Chinese Communist Party leaders participated in it. Mao Zedong  was born at Shaoshan in China. He developed theories and principles based on Marxist and Leninist ideologies, and  Maoism  is the common name given to them. After the Long March under his leadership, China became People's Republic in 1949. The Great Leap Forword was an attempt by Mao to transform the agrarian Chinese economy to an industrial power. He introduced eight points to establish discipline in his nation. Speak politely. Pay fairly for what you buy. Return everything you borrow. Pay for anything you damage. Do not hit or swear at people. Do not damage...

The human body produces a small amount of electricity as blood flows through our body. That is how we are able to take EEG, ECG,etc. Does our body have resistance?  Answer is Yes, when our body or skin is dry, our resistance will be large. But, if it is wet, resistance decreases, and conductivity increases. So, it is not safe to touch electrical appliances when wet. Due to low resistance, there is a greater danger of us getting an electric shock. Resistors in Various Forms Resistor was invented by  Otis Boykin Thermistors : Resistors which are sensitive to heat. Resistors in Bulb Electric bulb was invented by Thomas Alva Edison. These electric bulbs or incandescent lamps use resistors. They mainly work based on the heating effect of electric current. The resistor mainly used in bulbs is tungsten. Since tungsten filament has high resistance, while converting electrical energy into light energy, it also produces heat energy. Advanced LED lights can be used to replace incand...