Categorywolhan

This blog post examines how far cyborg engineering can extend the definition of humanity and explores the future changes technology will bring to humankind.   Humans have long feared death and fundamentally pursued immortality. This fear stems not only from the terror of facing the end that is death, but also from the anxiety that the meaning of one’s lived life will vanish...

This blog post explores the principle of how light refraction creates mirages in deserts and polar regions. Discover the science behind how mirages form.   A mirage is a phenomenon where an object that isn’t actually present appears as if it were there. However, a mirage is not an illusion or trickery; it is a phenomenon where the original object appears in a different location due to...

In this blog post, we’ll explore why apples and bread turn brown from the perspective of their respective browning reactions, and interestingly examine their differences and similarities.   You can observe that an apple, which looked fresh just moments ago, quickly turns an unappetizing brown when left at room temperature for a short time. Similarly, when you brush flour with egg and...

This blog post takes a detailed look at how minute traces left at crime scenes become crucial evidence through DNA analysis and what role they play in solving crimes.   Regardless of scale, incidents occur wherever people are. Perhaps people and incidents are inseparable. In places where human desires and conflicts intertwine, various incidents occur, whether minor clashes or major crimes...

This blog post examines the psychological impact on students of red pen grading, a long-standing practice in education.   Among elementary school workbooks, there is one called ‘Red Pen’. This name isn’t just a memorable brand name; it stems from the unique symbolism of the ‘red pen’. The brand’s ‘Red Pen Teachers’, who are home-visit tutors, go directly to students’ homes...

In this blog post, we explore how red marking affects students’ emotions and learning, and examine the positive effects of alternative colors.   Back in elementary school, everyone has the experience of coming home with a test marked in red pencil after an exam. Those who did well went home excited, while those who didn’t did so worried. It was a very familiar situation to tease...

Light and heat are connected through electromagnetic waves. When sunlight hits an object, it activates particle motion, converting into thermal energy, and this process raises the temperature.   The Sun, Light, and Heat Why is the sunny side warmer than the shady side? No matter how hot the Sun is, how can it heat objects on distant Earth across the vast, empty space of the universe without...

This blog post examines how the Big Bang theory explains the origin of the universe and why it remains controversial.   We live on Earth. Earth belongs to the solar system, the solar system belongs to our galaxy, and our galaxy belongs to the vast universe. So where did our universe come from? Scientists have proposed many theories to find the beginning and end of this universe. Since Hubble...

This blog post examines whether the potential of big data hinges on technology or on the analyst’s insight and capabilities.   Just five years ago, big data was a niche concept known only to a select few. At the time, while information and technology were advancing rapidly and the volume of data was exploding, there was little thought given to how this data could be efficiently...

This blog post examines how big data has become a crucial factor determining innovation and competitiveness in our society, using various case studies.   The hot topic in the IT industry today is undoubtedly big data. Simply put, big data refers to large volumes of information. In the past, managing and utilizing large datasets was difficult, so they were often merely stored or used only by...