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Showing posts from January, 2021

Rules of money

The author of the book "The Psychology of Money" says that when I work in a hotel,I observe that a millionaire is always come to that hotel in which I work. He always come in his expensive car and always come with greater money for showing how great he was. Once he give a great amount of money to waiter and told him to buy some gold coins and he started throwing them in the pond with her friends,only for fun.  Let's take a look on the biography of that millionaire. He was 20 years old when he make component of a WiFi router and patent it and after that he sell some companies. Here we conclude that how rich and intelligent was that person but he knew the importance of the money that he earn? No, he doesn’t knew the rules and the importance of the money. Let us see what are rules of money that author share with us in his book. Rule #1: Luck and Risk When Bill Gates was studying in a high school in America. He was so lucky because at that t...

Science chapter motion notes in very simple way | pdf or web view | S. Chand

Let's take close look to basic and importantconcepts of chapter motion for class 9th Science.  What is Motion? A body is said to be in motion when it’s position is changes continuously with respect to a stationery object taken as a reference point.  What is Distance?  The actual path covered by a moving body is called Distance that is travelled by a body. It is  a scalar quantity. What is displacement?  The shortest distance between the initial and final position is called displacement. It is a vector quantity.  What is Uniform motion? A body has a uniform motion when it travels equal distance in intervals of time. What is Non-Uniform motion?  A body has a non-uniform motion when it travels unequal distance in intervals of time.  What is speed? Distance travelled by a body per unit time is called speed.  What is Velocity? Displacement produced by a body per unit time is ...

Scientists discovered a recoiling black hole

 Scientists have discovered a 'recoiling' black hole at the center of a bright cluster of a distant galaxy that has baffled them. This black hole is hosted by Abell 2261’s brightest cluster galaxy, which is a result of a supermassive black hole merger. Spanning a little more than one million light-years, the galaxy is about 10 times the diameter of our Milky Way galaxy. The National Aeronautics and Space Administration's Hubble Space Telescope and Subaru Space Telescope revealed a galactic core is larger than expected for a galaxy its size. These features were first identified by Space Telescope Science Institute’s Dr. Marc Postman who said the galaxy stood out in the Hubble image. "When I first saw the image of this galaxy, I knew right away it was unusual," Postman explained. "The core was very diffuse and very large. The challenge was then to make sense of all the data, given what we knew from previous Hubble observations, and come up with a pl...

Big Bang Theory

    The Big Bang Theory is the leading explanation about how the universe began. At its simplest, it says the universe as we know it started with a small singularity, then inflated over the next 13.8 billion years to the cosmos that we know today. Because current instruments don't allow astronomers to peer back at the universe's birth, much of what we understand about the Big Bang Theory comes from mathematical formulas and models. Astronomers can, however, see the "echo" of the expansion through a phenomenon known as the cosmic microwave background.  While the majority of the astronomical community accepts the theory, there are some theorists who have alternative explanations besides the Big Bang — such as eternal inflation or an oscillating universe. The phrase "Big Bang Theory" has been popular among astrophysicists for decades, but it hit the mainstream in 2007 when a comedy show with the same name premiered on CBS. The show follows the home and academi...