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  Tigers tear alive Salahuddin to pieces November 11, 1971. East Pakistan Rifles (EPR) camp in Thakurgaon. After terrible torture, Pakistani soldiers threw a young man into the tiger cage of the camp. Two tigers roared at him. They pulled him apart and ate him. The young man's name was Salahuddin. He was a brave freedom fighter. During the Liberation War, Thakurgaon was a subdivision of Dinajpur district. Kosharaniganj of Pirganj police station of this subdivision was the village of Shaheed Salahuddin. Shaheed Salahuddin's family, local freedom fighters and the authentic book Salahuddin (The Sacrifice of the Freedom Fighter in the Tiger's Cage) reveal that in early April 1971, the Pakistan army carried out a brutal massacre in various areas of Dinajpur.  They committed mass arson, looting and torture of women while carrying out a massacre in Pirganj on April 18. Many fled the village fearing the massacre. Many others joined the Liberation War. Salahuddin, an 11th grade stud...

  This is the Ring Nebula or M57 Original image - When it was first seen through a telescope in the 1700s, it looked round and fuzzy, and astronomers at the time thought it looked like a distant planet. It was named by William Herschel. [ Mobile ] - The Ring Nebula is the remnant of a dying Sun-like star. The star has shed its outer layers of gas into space at the end of its life, and its inner core is slowly becoming a white dwarf star. Original image - You can see it in the picture as a hollow ring. But scientists have now seen with advanced instruments like the James Webb Telescope that its true shape is not a hollow ring, but rather an elongated structure like a rugby ball. We see it as a ring because it is tilted towards our Earth in such a way that we are looking along its center. - It is located about 2,300 light-years from Earth.  It would take millions of years to get there with our current technology! - The nebula is about 1 light-year in diameter, which means that i...

  The First Mobile Phone of 1973 A Revolution in Communication The story of mobile phones begins in 1973, a year that marked a turning point in human communication. Until then, telephones were fixed devices connected by wires, restricting conversations to homes and offices. On April 3, 1973, Martin Cooper, an engineer at Motorola, made history by making the world’s first handheld mobile phone call. This remarkable moment was not just a technical breakthrough, but the start of a global transformation that reshaped the way people interact, work, and live. The device that Cooper used was called the Motorola DynaTAC 8000X. Compared to today’s sleek smartphones, it was enormous. It measured about 10 inches in length, weighed nearly 2.5 pounds (over one kilogram), and looked more like a brick with an antenna than a gadget of convenience. Despite its bulky design, it was revolutionary because it gave individuals the freedom to communicate wirelessly while moving around—a concept that...