In this blog post, we will take a closer look at how visual information received through the eyes is processed in the brain and how we perceive the world. We can obtain external information about objects within the range of our eyes, such as their colour, texture, thickness, and size. By recognising the objective and external characteristics of the objects around us, we obtain clues that...
Advances in sports technology: detrimental to the essence of competition or a step forward?
In this blog post, we look at how advances in sports technology have affected performance and fairness, using the example of high-tech swimsuits. In 2008, when the swimwear company Speedo developed and unveiled a swimsuit using cutting-edge materials and technology called ‘Laser Racer,’ the term ‘technological doping’ began to be used in the swimming world. Of the 25 world records set at...
How do smartphones use GPS and beacons to measure location?
In this blog post, we will introduce the principles and various techniques used by smartphones to accurately measure location indoors and outdoors using GPS and beacons. Smartphones use various location measurement technologies to measure their location in various terrain environments. There are two types of location: absolute location and relative location. Absolute location is a location...
Are smartphones really making our lives smarter?
In this blog post, we will look at the changes smartphones have brought to our lives and the hidden problems of addiction, especially their impact on children and adolescents. Smartphones become part of everyday life The world is changing rapidly in the wake of the information revolution. These changes are clearly evident in the field of mobile communications. In the early 1990s, pagers...
Can smart grids solve blackouts?
In this blog post, we will look at how smart grids can solve the problem of blackouts caused by power storage limitations and frequency mismatches. On September 15, 2011, a large-scale power outage occurred suddenly in Gangnam-gu and Yeouido in Seoul, South Korea, as well as in Gangwon and Chungcheong provinces. This was the first time such a simultaneous power outage had occurred in South...
Is Schrödinger’s cat really dead and alive at the same time?
In this blog post, we will examine the limitations of the Copenhagen interpretation through Schrödinger’s cat, a representative thought experiment in quantum mechanics. Quantum theory is a physical theory that explains the microscopic world. The microscopic quantum world refers to a world that is approximately 1 nanometer in size. Until the 19th century, classical mechanics...
How can a crystal oscillator measure invisible, microscopic masses?
In this blog post, we will look at how the piezoelectric effect and crystal oscillators can be used to measure extremely small masses such as gas molecules and DNA, and explore some of their applications. Scales commonly measure mass by using the principle of levers or by measuring changes in electrical resistance. So how do ultra-high-precision scales measure the mass of microscopic...
Why have shop windows become mirrors that reflect our desires?
In this blog post, we will examine how shop windows go beyond simple display spaces to stimulate our desires and identities. Shop windows are one of the representative cultural symbols of consumer society. Just as we read the cover and table of contents before reading a book, shop windows allow us to enter the spatial text of consumer society. “Text” is a term that refers to all artifacts...
Is the shutdown system a form of protection for young people or excessive control?
In this blog post, we will examine the validity of the shutdown system, focusing on its effectiveness, side effects, and impact on the freedom and rights of young people. Controversy and unfairness of the shutdown system Recently, there has been controversy on the internet regarding the “shutdown system.” According to a Korean newspaper article published on October 14, there have been...
Is the shutdown system effective for young people, and are there any side effects?
In this blog post, we analyze from various perspectives whether South Korea’s shutdown system is actually effective in protecting young people or whether it is causing side effects. What is the shutdown system? The shutdown system is a technical measure implemented by the Ministry of Gender Equality and Family of South Korea that restricts internet game access for youth under the age...