In this blog post, we’ll explore everything from the emergence of quantum mechanics—which challenged the predictability of classical physics—to the debates surrounding the Copenhagen interpretation and the many-worlds interpretation.   Quantum mechanics, which emerged in the early 20th century, completely upended the existing framework of physics. Until the advent of quantum mechanics...

In this blog post, we’ll explore what cryptography is and examine the concepts of confidentiality, integrity, authentication, and non-repudiation—which are used to protect information—as well as the principles of encryption and decryption.   What Is Cryptography? Let’s think about what we actually mean when we say we’re “encrypting” something. First and foremost, we want to ensure that third...

In this blog post, we’ll explore the basic principles of TLS—which securely protects information exchanged over the Internet—as well as symmetric-key and asymmetric-key encryption methods, and the process by which TLS communication takes place.   We are truly in the age of smartphones. The number of smartphone users in South Korea once exceeded 39 million, and it is said that more than 50%...

In this blog post, we’ll examine the principles behind how arch structures and suspension structures support loads, explore the characteristics of each, and discover why suspension structures are used more frequently than arch structures today.   Why are arch structures so strong? In architectural engineering, there are various methods for supporting loads. In ancient and medieval...

In this blog post, we’ll explore how advances in communication technology have changed the way people interact, and how modern life—with its reliance on smartphones—relates to Einstein’s predictions.   There’s a post making the rounds on online community sites under the title “Einstein Who Predicted the Future.” The post features a series of photos: one of people fiddling with their cell...

In this blog post, we’ll examine the causes of sinkholes, the impact of reckless urban development on the ground, and sinkhole prevention and response measures in other countries.   The Harmful Effects of Indiscriminate Development: Sinkholes In the past, a hole approximately 100 meters deep opened up in the center of Guatemala City, causing buildings to be sucked in and resulting in three...

In this blog post, we’ll explore how to compare and measure the thickness of threads that are too fine to measure easily with a ruler, using two methods: the “hangjang-sik” and “hangjung-sik.”   What are the methods for comparing thread thickness? The tradition of celebrating a baby’s first birthday in a special way can be found in many parts of the world. Among these traditions is one where...

In this blog post, we’ll examine how the relationship between animals and humans has evolved as humans have progressed from ‘Homo sapiens’ to ‘Homo Deus’, and explore the possible directions this relationship may take in the future.   By stepping into the realm of life, humans have encroached upon the realm of the divine. Having once threatened God with the sword of...

In this blog post, we’ll explore the concept and structure of the application processor (AP), which handles various smartphone applications.   These days, cell phones have become an indispensable necessity for modern people. In South Korea, in particular, the number of smartphone users has grown significantly, surpassing 15 million, and most people around us now own a smartphone. Smartphones...

In this blog post, we’ll examine the core features of smartphones, the role of applications, and how application programmers make smartphones “smart.”   Led by the introduction of the iPhone, smartphones have become the centerpiece of social innovation in just a few years. Once considered the exclusive domain of a small group of early adopters, smartphones are now a common sight on the...