Always Learn

Yes, you heard it right. There is something that can take down the entire technological advancements of the mankind in a matter of hours. Any guess..? No it's not the Nuclear war. Let's find out what it is. We all have heard about Nuclear weapons that can destroy the earth by the intense energy released by nuclear fission or fusion. But that's not what we are talking about. We are talking about the naturally occuring fusion reactor in our planet, the sun. The light and heat energy given out by the sun is being used in different ways by the life on earth for it's existence. But there is a limit in everything. Even the energy that we were talking about. You all have heard about the northern light. The colourful waves formed in the sky that gives the night sky a majestic look. But what creates the northern lights? When charged particles from the sun strike atoms in Earth's atmosphere, they cause electrons in the atoms to move to a higher-energy state. Whe...

Mantis Shrimp Mantis Shrimps are one of the cutest but fierce shrimps that can be found in oceans all around the globe. So how does it create a vacuum just with a punch? Let's see. This shrimp is famous for its super punch and its complex eye structure. It's eyes are so good that it can have a full 360 view all the time and it's eyes have more than three times the amount of photo-receptors that a human have. It also has spectacular depth receptors to pin point the exact position of the prey so that it can deliver the perfect punch. Now let's talk about the world's fastest punch this tiny creature can deliver. The punch is so fast that it accelerates at the same speed as that of a 22 caliber bullet. The punch reaches around 45-50 miles per hour in just 3 milliseconds. A saddle shaped part of its exoskeleton which acts similar to a spring boosts the strike speed generated by the muscles.The punch is impossible to see by normal human eyes. We will need high s...

Gravitational wave is a concept that Albert Einstein predicted in 1916. Albert Einstein proposed an idea that gravity comes from the warps and curves in the fabric of space. Gravitational wave is actually like a ripple in the fabric of space. According to Einstein if rapidly orbiting neutron stars or black holes occur on the fabric of space, it creates ripples and these ripples are called as the gravitational waves. As the gravitational waves passes by anything, it stretches and compresses it. If we take the case of earth, the ripples will stretch and compress the earth by less than an atomic diameter. Scientists at Laser Interferometer Gravitational-Wave Observatory discovered the first gravitational wave  on 14 September 2015 and was announced by the LIGO and Virgo collaborations on 11 February 2016. Virgo Interferometer, Italy Since the stretching and compression is of very small size, it is not practical to measure it directly. But scientists have came up w...

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...