Always Learn

Before the discovery of LCD and LED displays, there was a display technology called CRT or Cathode Ray Tube. But one big disadvantage of the display was that some portion of the display will  retain the content it used to display regularly. But why this was happening? When a same image is being displayed regularly on the same spot, the ray hitting from the CRT will use up the phosphorous on that part of the screen. To prevent this problem, we found a simple method and that was by using screen savers. They are randomly displayed image, text or animation which changes continuously so that no part of screen displays same content all the time. But, in the world of innovations and modern display technologies, is this still a concern? Let's find out. There is a concern about AMOLED screens particularly having a burn effect. But why does that happen in this modern technology which uses entirely different display methods than CRTs. In smartphone displays with 'always on...

We all know that flies spread diseases just by touching on our food. Is it really true or just a myth? Lets find out. Common house flies are seen all over the world and they love to disgust us by sitting on our tasty food right before we take a bite on it. It is estimated that there are more than 90,000 species of flies out there and the common house fly is just one of those notorious group. They are attracted to both fresh food items and rotten garbage. The nasty places like rotten carcasses, garbage, poop etc are favorite landing pads and for flies and they enjoy feeding on them. We don't care when a fly sits on a garbage bin. But when that same fly comes and sits on our tasty slice of pizza, that's something makes us go nuts. But there are some people who don't really care about a tiny fly on the pizza and most of the time they don't get sick by eating that food also. Flies don't chew their food, they spit enzymes on the food and sucks in the diluted...

1. Snake Island (Ilha da Queimada Grande) The snake island which is almost 92 miles away from the cost of São Paulo in Brazil has earned it's name for a reason. The amount of snakes on that island is so high, that the Brazilian navy has banned people from landing on the island. Only a few scientists are given permission to go on that island. It is estimated that there are about 1-5 snakes per square meter of the island and most of the snakes are unique species of pit viper, the golden lance-heads which are famous for their deadly venom. 2. The North Sentinel Island, Andaman and Nicobar Islands This isolated island which host a small tribal group of few hundred people is situated in the Andaman and Nicobar Islands. This small island has been stayed isolated for thousands of years and still remains the same due to the aggressive nature of the tribal people. They don't welcome any visitors on that island. All that you can receive as a welcome gift could probably be ...

You might have seen super heroes saving the planet from monster attacks and alien invasion. Are all of those super heroes saving the world just stories or there are instances where some hero saved the world from a terrible catastrophes? Let's jump right into the story of  Stanislav Yevgrafovich Petrov who saved the world from a nuclear war. On 26th September 1983,  Petrov was the duty officer at the command center for the Oko  nuclear early-warning system. He  was a lieutenant colonel of the Soviet Air Defense Forces. His job was to monitor signs of incoming missiles and report to the higher officials in case of an attack. On that day, for the first time the nuclear early warning system of the Soviet Union reported the launch of multiple USAF Minuteman intercontinental ballistic missiles from bases in the United States. What Petrov decided to do saved the world from a nuclear war on that day. so, what was the amazing act he did? He didn't report it to anyon...

We all have heard about 'Gut Instinct' or 'Second Brain' in our body. People often tell you to trust you gut instinct. But what exactly is it and how accurate is your gut instinct? Let's find out. Do you ever find yourself in a situation and there is a spontaneous thought, the voice in your head tells you to back off? A sudden anxiety and tension right before you receive some bad news? These feelings are often caused by your gut, not your brain. The 'Enteric Nervous System' is responsible for the control and communication of the entire gastrointestinal system. It is a larger group of neurons and nerves that can actually act as a second brain. A normal Human brain processes about 400 billion bits of information every second. But our conscious mind doesn't really use all these information. But our brain and our enteric nervous system together can make really accurate prediction of the immediate future. If the prediction is going to have a negativ...

We all have seen candles flames and we know the shape of them. Which ever be the shape of the candle wick the flames almost have the same shape. But, what gives them this particular shape..? Let's find out. Something that pulls us all down towards the earth is the one which makes the flames go up. Yes, it's the gravity. In order to better understand it, lets see what makes the fire. We have been using fire for thousands of years. From early campfires of primitive humans to the modern automobiles, we have been learning and improving the combustion techniques. Lets consider a candle flame. Hydrocarbons from the candle combines with oxygen and gives out light, heat, carbon dioxide and water. When the temperature of air around the flame increases, it rises upwards and cold air from surrounding occupies the space. This upward flow continues and the flame takes a tear drop shape. But at zero or micro-gravity conditions, the density difference doesn't come into the picture. ...

Can you actually balance a ball on top of a jet of water..? If the mass of the ball is small enough for the for the upward stream of water, then yes you can. Science behind this is called Hydro Dynamic Levitation. You can not only balance a ball, but also a disc on it's curved side. Amazed..? Let's discuss how it works. When the water jet touches the side of the ball, it gives an upward force on the side of the ball there by initiating the spin. since the water sticks on to the spinning ball it gets thrown over to the other side of the ball. Thus the ball applies a force on to the water in an outward direction. Since the ball is in a constant spin, it maintains the angular momentum. The force opposing of water thrown over to the other side and the stickiness of water on the side of the ball lets the ball to achieve equilibrium and stay spinning. Don't confuse this with Magnus or Conada effects. Because for the Magnus effect to occur, the ball must be spinning befo...