Curious about everyday life? Start here. Explore English editions of Samulgoongi’s illustrated explainers, translated from our original Korean articles.
Why Don’t Ant Nests Flood When It Rains?
Ants are insects in the family Formicidae, within the order Hymenoptera. They are thought to have first appeared in the middle to late Cretaceous period of the Mesozoic era. Found throughout the…
Read article →Why Do You Look Different in Photos and in the Mirror?
These days, it is fair to say that most people carry a camera all the time: with a smartphone, you can take a picture whenever you like. Phones have both front and…
Read article →Does Time Pass Differently in Dreams?
A moment is a particular point in time, while a duration is the interval between two moments. Through shared conventions, we have defined units such as seconds, minutes, days and years. Unless…
Read article →Is Rock Paper Scissors Really Fair?
Rock paper scissors is a game in which two or more people simultaneously make a shape with their fingers, then decide who wins according to a set of rules. It is often…
Read article →Do You Really Need a Screen Protector on Your Phone?
When you first buy a smartphone, you probably treat it like a treasure. A case and screen protector are standard precautions, and you may even take out insurance against accidents.But do you…
Read article →Why Are Korean Electrical Outlet Holes Tilted at 45 Degrees?
To use an electrical appliance, you need to plug it into an outlet. But on the two-socket wall outlets commonly seen in Korea, the holes are tilted at 45 degrees rather than…
Read article →What Is the Clear Stuff on the Root of a Plucked Hair?
If you examine the root end of a few plucked hairs, you may notice a transparent, jelly-like substance wrapped around the end of some of them. It can be pulled off the…
Read article →How Does a Gas Pump Know When Your Tank Is Full?
Vehicles such as cars need fuel to move, and getting that fuel means visiting a gas station. At a full-service station, a driver parks beside a pump and opens the fuel filler.…
Read article →Why Does a Negative Times a Negative Make a Positive?
Addition, subtraction, multiplication and division are known as the four basic arithmetic operations. They are fundamental to mathematics, and multiplication is taught in the early years of elementary school.Once you learn multiplication,…
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