In this blog post, we’ll analyze the flow around a spin-free ball and examine why it oscillates up and down from a fluid dynamics perspective. Spinless Balls and Flow Visualization Whenever Ronaldo’s spinless free kick narrowly clears the defensive wall and finds the back of the net, the goalkeeper’s bewildered expression is often caught on camera. The goalkeeper’s look of frustration...
How Severe Is Inequality in South Korea?
In this blog post, we’ll examine what inequality means in our society, explore the difference between poverty and inequality, review various measurement methods, and assess the level of inequality in South Korea based on domestic and international statistics. We’ll also summarize various perspectives on inequality. Poverty and Inequality When discussing inequality, the first thing to keep...
When analyzing computer hardware, how should I configure a custom-built PC to suit my needs?
In this blog post, I’ll provide a step-by-step guide on how to select and combine key computer hardware components (CPU, motherboard, RAM, graphics card, etc.) based on your actual usage needs to achieve optimal performance and value for money. The Definition of a Computer and Its Expanded Applications Although the origins of the computer can be traced back to electronic calculators, today...
Is reinforced concrete a gift from God to humanity?
In this blog post, we’ll explore what reinforced concrete is and examine the characteristics, advantages, and disadvantages that have established it as a core material in modern architecture. What Is Reinforced Concrete? The central structure—the “core” that bears the building’s load—of Dubai’s Burj Khalifa (829.8 m tall), often cited as the tallest building ever constructed by humans, is...
What Will You Choose in This Very Moment?
In this blog post, I’ll share my thoughts on the choices we make “in this very moment,” based on my experiences with the people I met during a backpacking trip I took after completing my military service. While I was in the military, I always longed to travel abroad. I had planned to visit as many places as possible once I was free to travel overseas after my discharge. However, after...
How was PCR technology—which amplifies a single fragment of DNA into hundreds of millions of copies—developed?
In this blog post, I’ll summarize the background, principles, and process behind the invention of PCR, as well as its impact on genetic engineering and its various applications. In modern society, technologies such as GMOs and human cloning have become major topics of debate due to the ethical issues and safety concerns they raise. Since these technologies are all based on genetic...
How did the automobile change people’s lives and become an essential part of modern society?
In this blog post, we’ll explore the structure, history, classifications, and social impact of the automobile. The automobile is the mode of transportation most deeply embedded in Korean society. Every morning, Seoul is blanketed with cars used by commuters, and every night, yellow headlights and red taillights illuminate the cityscape between buildings. Many children spend their days...
Have wearable robots become a reality?
In this blog post, we’ll explore the development trends and operating principles of wearable robots, as well as research examples from both Korea and abroad. Why wearable robots are no longer a distant future When people hear the term “wearable robot,” many think of characters like “Iron Man” or “RoboCop” from movies. Due to the influence of this pop culture, wearable robots may still feel...
Why was artificial intelligence created, and how have its development goals evolved?
In this blog post, we’ll take a chronological look at why artificial intelligence was created and how it has evolved, against the backdrop of the heightened interest that followed AlphaGo. Early Objectives and Concepts: From Neuron Models to Thinking Machines Interest in artificial intelligence surged following the match between AlphaGo and Lee Sedol, and many people came to view it as an...
Will Humans Kill Other Humans? — The Extinction of Homo sapiens from the Perspective of Inorganic Engineering
In this blog post, we examine how advances in inorganic engineering might influence the future of Homo sapiens and the possibility of its extinction. Background and Problem Statement One event that many people remember is the moment when artificial intelligence defeated the Go champion. The entire nation’s attention was focused on a single Go board, and people gathered in small groups on...