In this blog post, we’ll take an easy-to-understand look at everything from why couple rings are worn on the ring finger to the differences between 24K, 18K, and 14K gold, the necessity of gold alloys, the principles behind the colors of white gold and rose gold, and the differences between white gold and platinum.   Why Are Couple Rings Worn on the Ring Finger? Stories linking fingers to...

In this blog post, we’ll explore why green ships are gaining attention, changes in international environmental regulations, and the direction of the latest green ship technologies, including LNG, methanol, and ammonia-powered vessels.   Tightening Environmental Regulations and the Emergence of Green Ships As climate change and carbon neutrality have recently emerged as global challenges, the...

In this blog post, we’ll take a simple and fun look at the principles behind the Sn2 reaction—one of chemistry’s most representative substitution reactions—by comparing it to a romantic relationship.   How Does Chemistry Explain Human Relationships? Chemistry is the study of the countless elements that make up our world. Perhaps this is because humans are also part of that world. Many...

In this blog post, we’ll examine the principles behind a soccer ball’s curve, focusing on fluid dynamics and the Magnus force, and explore the science behind the “banana kick.”   “A soccer ball is round.” This is a phrase often heard when a team considered the underdog in a match pulls off an unexpected victory, or when a dramatic comeback occurs in a situation that seemed all but lost. The...

In this blog post, we’ll explore the principles behind reinforced concrete, its advantages and disadvantages, and why it’s the most widely used material in buildings today.   Definition and Characteristics of Concrete Structural materials are just as important in buildings as the technology used in their construction. Concrete is one of the most widely used structural materials today, and we...

In this blog post, we’ll take a simple look at why chords sound beautiful—focusing on vibrational modes—and explore the physical principles behind this phenomenon and how they’re applied to instrument making.   Memories from School Days and a Sense of Curiosity Do you remember finding music theory classes boring back in school? Even students who usually sang or played instruments often lost...

In this blog post, we will examine the principles behind how a decline in the groundwater level causes land subsidence, focusing on the case of Mexico City, and discuss the implications for the Jamsil area in Seoul.   Issue: Ground Abnormalities in Jamsil, Seoul, and Suspicions Regarding Groundwater Recently, concerns among citizens have grown following sudden instances of the ground sinking...

In this blog post, we’ll explore the principles and applications of geothermal energy, its current use around the world and in South Korea, and its future potential.   The Earth may look cold on the surface, but its interior is warm The blue image of the Earth’s surface naturally brings to mind a sense of coldness. But what about the Earth’s interior? Although the Earth—where oceans cover...

In this blog post, we’ll examine the concept and mechanism of chemical castration, its actual effectiveness and limitations, side effects, and the social and ethical debates surrounding it.   Anxiety and Calls for Punishment in Korean Society Recently, anxiety over sex crimes has been growing in our society. The internet and television have been reporting a string of brutal and shocking...

In this blog post, we will examine the causes of the Sewol ferry sinking from a naval architecture perspective—focusing on stability, ballast water, ship structure, and operational management—and explore the lessons learned from the accident.   Overview of the Incident On April 16, 2014, the passenger ferry Sewol, en route from Incheon to Jeju, sank in waters near Jindo County, South Jeolla...