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Elements: Wu Xing Of The East

Posted on 31/01/201215/02/2019 by Jinavie

In ancient China and Korea, there are five, not four, basic elements (Japan also has five but they are slightly different). In the East, these five elements are called “oh hang (오행, 五行)” in Korean and “wu xing” in China. These are (read in Korean): hwa (火, fire), su (水, water), mok (木, wood), geum (金, metal), and toh (土, earth). When you combined with the theory of Yin and Yang, the concept is known as the Yin-Yang and the Five Elements theory (eum yang oh hang sul, 음양오행설). Wu Xing is quite different from the Four Elements of ancient Greece in that it explains the changes in life and the universe rather than being the building blocks of matter (“wu xing” translates to “five ways”). To first understand Wu Xing, one must understand that each element is more of an abstract concept than the actual object. For example, “mok” does not mean wood per se, but rather a symbol for the life force of a growing tree.

There are two relationships between the elements in Wu Xing: Creation (상생, 相生) and Destruction (상극, 相剋). Creation refers to the cyclic principle of what generates what, and Destruction refers to what overcomes and represses what. The Creation and Destruction of Wu Xing are as follows:

목생화(木生火): Wood creates Fire. Wood feeds Fire.
화생토(火生土): Fire creates Earth. Fire makes ash which becomes Earth.
토생금(土生金): Earth creates Metal. Earth bears Metal.
금생수(金生水): Metal creates Water. Metal carries Water.
수생목(水生木): Water creates Wood. Water nourishes Wood.

목극토(木剋土): Wood beats Earth. Wood takes roots in Earth.
토극수(土剋水): Earth beats Water. Earth absorbs Water.
수극화(水剋火): Water beats Fire. Water quenches Fire.
화극금(火剋金): Fire beats Metal. Fire melts Metal.
금극목(金剋木): Metal beats Wood. Metal chops Wood.

(Image source: http://cadfluence.deviantart.com/)

History & Literature

Elements: Four Elements Of The West

Posted on 31/01/201215/02/2019 by Jinavie

Human beings have believed that all matter can be divided into basic elements for a very long time. Although we now know that the basic building block of the universe is atoms, what did ancient people believe matter was made of?

In ancient Greece, the seat of Western culture, it was believed that everything was made from the four elements: earth, fire, water and air. According to Aristotle, every element has a primary and secondary characteristic, with the four characteristics being hot, cold, dry and wet. Air is primarily wet and secondarily hot, fire is primarily hot and secondarily dry, earth is primarily dry and secondarily cold and water is primarily cold and secondarily wet. He also spoke of a fifth element (quintessence) beyond the four elements. The name of the fifth element is aether and it is a pure and heavenly element that cannot be corrupted like the earthly four elements. Furthermore, it was thought that aether was the element of the sky and stars were composed of it as they were heavenly, not earthly.

The four classic elements of ancient Greece had an impact not only on physics and chemistry, but also on philosophy and culture (the concept of the four elements is popular in modern games too). The most interesting example of these is a theory by Hippocrates, the father of Western medicine, that states that the human body is composed of four bodily fluids (humours) and an imbalance between the humours caused diseases. The four humours are yellow bile (fire), black bile (earth), blood (air) and phlegm (water). Furthermore, he believed that the four humours affected personalities too. For example, an excess of black bile (“melan chole” in Greek) would cause a person to become introspective and think negatively, leading to depression or “melancholy”. This is quite possibly the first medical records on clinical depression.

The four classic elements of ancient Greece can also be found in ancient Egypt and many other ancient civilisations. It also had a significant influence on alchemy in the Middle Ages.

(Image source: http://y3rk0.deviantart.com/art/The-Four-Elements-87598175)

History & Literature

Leaf In The Water

Posted on 04/09/201114/02/2019 by Jinavie

In the year 914 (during the Later Three Kingdoms period of Korea), a general named Wang Geon was on his way to strike the kingdom of Later Baekje. He noticed a strange, colourful cloud in the sky and when he went there to investigate, he found a maiden washing clothes by a well. He approached her and asked for some water. The maiden politely accepted and went to fetch a gourd of water, placed a willow tree leaf in it then handed it to Wang Geon. Curiously, he asked:

“What is the reason for putting a leaf in the water?”
“You appeared to be very thirsty so I was worried that you would gulp down the water too quickly and upset your stomach.”

He was touched by her consideration and wisdom and fell in love with her, so he asked her hand in marriage before leaving the town.

In 918, Wang Geon became the first king of Goryeo after successfully unifying the three kingdoms of the Korean peninsula. The maiden is now known as Empress Janghwa; that is the story of how a girl became an empress from a simple act of kindness and tenderness.

Science & Nature

Stone Skipping

Posted on 19/06/201112/02/2019 by Jinavie

Stone skipping refers to the act of throwing a flat stone on a calm body of water to make it skim the surface and seemingly bounce. However, this is a technique that is hard to master and usually results in the stone simply sinking. Thus, a paper researched how one can improve their stone skipping skills.

According to the study, a stone that is 5cm in diameter, 2cm thick and about 100g in weight is ideal. But choosing your stone is only the first step.
This stone must enter the water at 20 degrees at a speed of over 90km/h to make sure the stone will skim. Furthermore, the stone needs to be lifted up about 20 degrees against the water.
Lastly, the stone needs to be spinning with enough force to drive it forwards while keeping it off the surface of the water. This is known as the gyroscope effect (the same reason why a top does not fall when spinning).

However, it is difficult calculating and throwing the perfect angle and speed unless you are a machine. Ergo, the only effective way to master the skill is through practice and effort.
A handy advice is to throw the stone as fast as possible from a low position, letting go of the stone just below your knee height-wise.

Science & Nature

Taste Of Water

Posted on 24/05/201112/02/2019 by Jinavie

It is a common chemical fact that water is flavourless and odourless. However, most people will know that water “tastes” subtly different each time.
Taste is composed of information from taste buds on the tongue, combined with the sense of smell from your nose. Although water itself has no flavour or smell, it has many things dissolved in it such as gases and minerals that can be tasted.
This is why tap water can taste bad due to the chlorine used to treat it, or metals such as copper that have come off the pipes.

It is also well known that temperature affects the taste of water. The ideal temperature is between 10~17°C, where oxygen saturation is sufficient, giving the water a “refreshing” taste. Any hotter and the oxygen escapes, giving the water a flat taste, just like distilled water. Warm water also causes the brain to think it is saliva or mucus, sometimes producing an uncomfortable sensation. Any colder, the tongue is numbed and it loses its ability to taste.

When making tea, the ideal temperature is 70~80°C. A simple way to achieve this is by leaving a cup of boiled water for a minute or two before putting the teabag in. This is the temperature when the dissolving of the various chemicals in tea leaves is optimal. If it is too hot, bitter-tasting tannins and catechins are released in excess, whereas if it is too cool, not enough dissolving occurs.

Philosophy

Power Of The Mind

Posted on 18/05/201110/04/2019 by Jinavie

There once lived a Buddhist monk by the name of Great Master Wonhyo(원효대사) in the kingdom of Silla (during the Three Kingdoms period of Korea). At the age of 45, he set out to the country of Tang (modern day China) to further his understanding of Buddhism. During his travel, he decided to rest in front of a grave when night fell. In the middle of the night, he woke up feeling thirsty and searched for a drink. He found a bowl full of water in the complete darkness and drank it quickly to quench his thirst. He thought to himself “How lucky I am, to find a bowl of such sweet water.” and went back to sleep.

When morning came, he checked to see if there was still water in the bowl. He then realised that the bowl was actually a skull, and that the water was stagnant, putrid water that had collected in it. Realising that he drank the vile liquid from the skull, the monk started throwing up. But then, he realised that in the darkness, he drank from the skull with no problem, and even thought that the drink was sweet and refreshing. To quote:

Objects and rules are only born from the mind; a dead mind is no better than a skull. Buddha’s Three Commandments originate from the mind, everything is born from knowledge. What could I ask for more when I have a mind?

Thus, the Great Master Wonhyo understood the way of Ilche Yushimjo (일체유심조/一切唯心造/“The mind is the origin of everything” – the key principle of Hwaumgyung, an important Buddhist text). He turned back and returned to Silla, where he devoted his life to spreading Buddhism to the people.

Any sadness or frustration can be dissipated if you look back on it. Depending on how you see the world, it can be either beautiful or tragic.

Science & Nature

From Cell To Birth: Childbirth

Posted on 02/05/201112/02/2019 by Jinavie

The onset of labour signals that the birth of the child is imminent. Strong contractions of the uterus under the influence of oxytocin cause intense pain for the mother. This escalates as oxytocin creates a vicious cycle for more and more powerful contractions. Other signs include a bloody show, where blood and mucus leaks out, and the water breaking, where amniotic fluid bursts out as the membranes rupture.
When the cervix has fully dilated to 10cm wide, the baby is ready to come out, and this is the end of the first stage. It may take over 24 hours for this stage to be over – all the while the mother is in extreme pain as her body transforms for the process.

The second stage concerns the delivery of the baby, and follows a precise series of steps.

The baby, oriented head-down, facing either right or left, leans against the pelvis.
The baby begins to descend, passing through the pelvis.
It flexes its head as it comes through the cervix, turning towards the mother’s back as it does so.
As the head crowns, the baby turns back to its side-facing position so the shoulders can come out.
The rest of the body comes out with the shoulder. Forceps may be used to help.

The passage of such a large head and body is only possible through the massive dilation of the cervix, the stretch of the vagina, and the soft, malleable skull of the baby (a newborn’s head often looks conical and alien-shaped). Quite often, the opening of the vagina is not wide enough, and the opening may be cut open more to ensure it does not rip.

After the baby is safely delivered, the umbilical cord and the placenta are also delivered, thus ending the third stage (afterbirth). The cord is clamped and cut, and the baby is then thoroughly checked to ensure it is healthy and has no developmental issues.

Although in the past childbirth was extremely risky and often led to the death of the mother and/or baby in the process, nowadays protocols and health professionals ensure that both survive the procedure, thus ending the incredible 40-week journey until the birth of a new life. Only after understanding the arduous steps and the risks a mother takes to give birth to her child can one truly appreciate the value of life.