In this blog post, we’ll examine the principles and applications of GPS technology—which makes our lives more convenient—as well as the issues it raises.   Modern Society and the Everyday Use of GPS In modern society, the convenience of daily life has greatly increased as various cutting-edge technologies—such as cars, cell phones, TVs, computers, and robots—have permeated every aspect of...

In this blog post, we’ll explore the structure of DNA, the process of DNA replication within cells, and the principles and importance of DNA amplification via PCR.   What is DNA? DNA, short for deoxyribonucleic acid, is a type of nucleic acid. Nucleic acids are substances found in large quantities in the cell nucleus and are broadly divided into two types: DNA, which stores and replicates...

In this blog post, I’ll explain the principles behind DNA chips, the manufacturing process, and their real-world applications in an easy-to-understand way.   Background and Basic Concepts of DNA Chips The Human Genome Project, launched in 1990, attracted widespread attention. When the project announced on April 14, 2003—ahead of schedule—that it had sequenced approximately 99% of the entire...

In this blog post, we’ll explore the characteristics and applications of carbon materials used in the environmental field, with a particular focus on activated carbon fibers.   What are activated carbon fibers? Have you ever used charcoal at home to purify the air? Charcoal is made by burning wood; it consists mostly of carbon and has a large surface area due to its numerous pores. The...

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...

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...

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...

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...

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...

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...