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Beyond Comics: The Doomsday Clock and Our Fragile Future

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  You may have heard the name "Doomsday" from Marvel comics—a towering villain known for destruction and chaos. But outside the realm of superheroes and fantasy, there exists a real-world symbol with an equally ominous name: the Doomsday Clock . And unlike its comic book counterpart, this clock isn’t about fiction—it’s about our collective future. The Doomsday Clock was created in 1947 by the Bulletin of the Atomic Scientists, a group of researchers who had worked on the Manhattan Project and were deeply concerned about the future of humanity. Rather than measuring hours and minutes, this symbolic clock represents how close we are to a global catastrophe. Midnight on the clock signifies the moment of irreversible disaster—whether through nuclear war, climate collapse, or unchecked technological threats. What makes the Doomsday Clock so compelling is that it’s not static. It’s adjusted regularly based on current global events. When tensions rise between nuclear powers, when cl...
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Stories of Robotics From Asimov's Science Fiction to the Robot Sophia

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If I'm not mistaken your favorite cartoon character is also Doraemon. He is also a robot from the 21st century. Do you know his birthday? It's 3 September 2112. You may have also heard of Cyborg from the DC series. A cyborg is also a type of robot but has a human brain. After the robot Sophia came to Bangladesh, she had a strong desire to meet him. But at that time it was not possible for me to come from Chittagong to Dhaka. I was very sad not to meet Sophia that day. Since then I always watched robotics videos on YouTube. After that I started liking movies like Transformers, I Am Robot. After entering college I started reading robotics journals, research papers etc. Three Basic Rules: The Three Laws of Robotics are rules created by science fiction writer Isaac Asimov that robots must follow. The rules were first introduced in his 1942 short story "Runaround". The laws are :  The First Law: A robot may not injure a human being  The Second Law: A robot must obey the or...
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Exploring the Wonders of Arduino: Unleashing Creativity and Innovation

  Since childhood, instead of playing with toys, I used to break toys to see what was in them. I was very interested in these things. I once opened and ruined a new watch the day I bought it. That day my mother scolded me for this. I used to watch attentively when the electricians fixed the TV or the fan. Then when I grew up, my interest in electronics started to grow. I used to make small fans and lights with motors, LEDs and batteries. To be honest, I've wasted more than I've made. After that I refrained from doing these things for many days. Then when I was in class 10, our school held a science fair. I saw a lot of interesting electronic gadgets out there . I was just watching without any  detailed knowledge or idea about them but my interest grew more and more. I didn't even know their names. Then after going to college, I got acquainted with electronic circuits and logic gates. And at the same time I got my first smartphone. I used to try to learn about them from Y...
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The Intricacies of Cryptography Ciphers

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         Have you ever heard of the Enigma Machine, one of the most famous cryptographic devices used by the Germans during World War II? It involves rotors and plugboards to replace characters multiple times, creating highly complex and variable encryption. Breaking the Enigma code was a significant achievement for cryptanalysts, including Alan Turing. If you love thrillers, have ever read any detective book, you must have seen Cipher. A cipher is a method or technique used to convert plain, readable text (known as plaintext) into a coded or unreadable form (known as ciphertext). This process is a fundamental aspect of cryptography. Cryptography has its roots in ancient civilizations. The Caesar cipher is one of the oldest known ciphers, created by Julius Caesar. Ciphers were widely used during World Wars I and II. In modern times, the concept of data encryption and decryption comes from this cryptography concept. Morse Code: Dots and Dashes: Morse code, devel...
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