In this blog post, I’ll explore the evolution of the various atomic models humanity has devised to understand the nature of the atom, the essence of the atom revealed in that process, and the new perspective this offers on the world we live in.   A long time ago, by human standards, the British chemist John Dalton gave me the name “atom.” Of course, the ancient Greek philosophers also called...

In this blog post, we’ll examine how the passwords we use are protected, explore the roles of hash functions and salts, and reflect on the importance of password security.   While studying computer science, I became curious about how passwords are protected. In the past, a hacking incident occurred at “Auction,” a major website that once had 10 million members. When a web service is hacked...

In this blog post, we’ll explore the mechanisms behind the development of cystic fibrosis, its effects on the airways and pancreas, and how treatment for the disease has evolved—from past therapies to current CFTR modulators and research into gene-based therapies.   When people see a mother holding her child upside down and patting their chest, many might think, “The child and mother are...

In this blog post, we will examine whether the development of civilization and technological progress can be harnessed to go beyond mere convenience and realize happiness for all, and whether such an ideal world can be created through virtual reality and robotics.   Human civilization continues to advance step by step. The direction of this progress is toward making human life more...

In this blog post, we’ll explore what graphene is—a material that originated from a simple experiment using adhesive tape—how it was discovered, the outstanding properties that make it useful in real-world industries, and the industrial potential and remaining challenges for graphene as of 2026.   Who will win the Nobel Prize? People often assume that scientists who achieve breakthroughs...

In this blog post, we’ll examine how much time people spend on TV and video content based on the latest Time Use Survey results, explore the evolution of TV, display technology, and changes in broadcast signals, and look at how TV will evolve in the future.   According to the “2024 Time Use Survey Results” released by Statistics Korea in 2025, citizens aged 10 and older spent an average of 5...

In this blog post, we’ll explore the concept and characteristics of social media, the principles behind the rapid spread of information, and the features and evolution of Twitter and Facebook—two of the most prominent social media platforms—to understand how social media delivers information compared to traditional news and how it has transformed the way people communicate.   Recently, more...

In this blog post, we’ll examine why—contrary to societal concerns about data breaches—a paradoxical phenomenon exists on social media where users voluntarily disclose their own private lives while also prying into the private lives of others.   In the past, a major controversy arose when it was revealed that Google had collected and stored wireless network traffic—including...

In this blog post, we’ll explore the principles and potential of “alarm glasses,” which convert sound into visual signals and vibrations to help people with hearing impairments—who have difficulty hearing—reduce the inconveniences and dangers they may face in daily life.   For humans, “hearing” is one of the five senses and serves as a vital means of conveying a great deal of information. In...

In this blog post, let’s explore the principles behind how the TV remote controls we commonly use in our daily lives transmit signals via infrared communication and how they can accurately deliver commands even amidst external infrared signals.   When did TV remote controls first come into use? Although TVs became commercially available in South Korea in the early 1960s, infrared-based TV...