Tag: encyclopaedia

Posted in Science & Nature

Resonance

Posted on by Jinavie

The power of vibration is incredible. Vibration allows a microwave to heat food and causes cities to be destroyed by earthquakes. The most interesting feature of vibrations is resonance, where a vibration of certain frequency greatly amplifies the vibration of another object. Every object has a natural oscillating frequency and when another wave of the same frequency hits the object, the oscillation suddenly amplifies and resonance occurs.

The best example for resonance is a swing. If you push a person on a swing at the same frequency as the swing’s natural frequency, you can achieve a much greater height than from pushing at any other frequency. Resonance can also be used to shatter a glass with only sound, by singing a sustained note at the same frequency as the glass’ natural frequency.

Resonance is how two things combine to create an even greater force.

1 + 1 = 3

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Posted in Life & Happiness

How To Sleep

Posted on by Jinavie

Do you suffer from insomnia? Tossing and turning in bed for hours every night while enduring the onslaught of fatigue and a sense of uneasiness is hard on both the body and the mind. There are many “remedies” such as drinking warm milk or exercising lightly but those rarely help. If you find yourself staring into the dark ceiling and unable to fall asleep again tonight, try the following trick.

First, calm your mind and breathe deeply. As you breathe in, count “one”. Remove all other thoughts and focus on the 1. Now, breathe out. As you breathe out, count “two”. Inhale, 1. Exhale, 2. Inhale, 1. Exhale, 2. If you think about nothing other than your breathing and counting, you will find yourself drifting off into dreamland in no time.

Posted in Science & Nature

Microwave

Posted on by Jinavie

The following are some strange things that happen when certain objects are placed in a microwave (and then turned on).

  • Never put metallic objects in a microwave. Metals act as an antenna, collecting the microwave and creating an electric current. This causes the metal to heat up, burning the food or melting plastic containers. Also, if the metal is pointy, it may cause an electric arc (sparks) which can be very dangerous. 
  • Ice alone does not melt in a microwave. This is because microwaves cause vibrations of particles to generate heat, but in ice the water molecules are tightly bonded and so vibration does not occur. 
  • Microwaves can cause something called superheating of liquids. This means that the liquid is heated to beyond its boiling temperature without boiling. A superheated liquid can spontaneously begin to boil in an explosive manner when disturbed. This is dangerous as it can mean that a cup of boiling hot water may suddenly explode in your face.
  • Certain foods are known to generate sparks in a microwave. For example, when two oblique slices of chilli pepper are placed near each other point-to-point, a flame sparks between the two points from the arcing electricity. Grapes do the same thing.
  • Some foods such as grapes and eggs explode in a microwave. This is because of the pressure building up within it from all the steam being released all at once. This is amplified with something like an ostrich egg where the shell is strong enough to contain an immense pressure. But when a certain pressure is reached, the egg will literally explode and send shrapnels of microwave pieces flying out like a bombshell.
  • A piece of garlic will spin rapidly in a microwave as garlic has a thin tube running on one side. As water evaporates, the vapours rush towards both ends causing the garlic to spin. Also, if you cut the bottom of a clove of garlic then microwave it for about 15 seconds, the pieces of garlic will pop out easily.
  • As explained above, metal conducts microwaves and generates a current. This is most obvious when a CD is placed in a microwave, where sparks dance on the surface (assuming the reflective surface is facing up). Similarly, a fluorescent tube will light up in a microwave from the electricity generated.
  • Placing an open flame, such as a lit candle, inside a microwave produces a very strange phenomenon. The naked flame will become ionised plasma and shoot up to the ceiling of the microwave. This is observed as a ball of light floating around. Note that this is extremely dangerous and most likely will destroy the microwave.

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Posted in Life & Happiness

Slap Bet

Posted on by Jinavie

If you ever have a disagreement with a friend and would like to bet over who is right, make the ultimate wager: the slap bet. Basically, whoever is right gets to slap the other person in the face as hard as they possibly can. On the surface it appears to be simple and harmless. But in reality, it is a deadly and formidable wager. For example, if one ever makes the unfortunate mistake of making a slap bet with the condition that the slap can occur at any place at any time, then they must live in fear of a slap appearing out of the blue and leaving a glowing, red and rather painful hand print on your face.

Being such a pricey bet, it is always useful to appoint a Slap Bet Commissioner. The Commissioner is responsible for resolving any problems that may arise regarding the bet, such as making a ruling. They must remain completely unbiased and hold the integrity of the slap bet above all else. They must also enforce the sacred rules of the slap bet, such as no premature slapulation. If the rules are disobeyed, the Commissioner has the power to endow one player the right to slap the other player (with completely subjective judgement of how many slaps they can get).

The slap bet is also highly customisable, where the players can settle on the number of slaps and the manner in which they will be delivered. Will the loser receive ten slaps in a row? Or will they get five slaps that can occur from the moment they lose to infinity?

A slap bet is the ultimate bet that is so satisfying and cathartic for the winner, but for the loser it is… well, let’s just say it is a real slap in the face.

Posted in Psychology & Medicine

Transactive Memory

Posted on by Jinavie

It is common to find couples, families or teams where someone always asks another member about a certain memory, while the opposite happens for a different memory. For example, a mother might always consult his son about computers and technical difficulties, while the father might always consult the mother about his plans for the month. This kind of “shared memory” is named transactive memory, where a group becomes organised in a way to share memory around in an efficient manner. This is usually done by the group reorganising itself so that each member specialises in a certain field, with the other members only remembering that that person is the expert. This means that instead of memorising every field, you can simply remember who is the expert in that field. It is much like learning where the reference text is rather than learning the contents.

Although it may look like dependence, transactive memory is an extremely useful tool in tight groups such as a couple or a small team. By having members specialise in certain domains of knowledge, the group is able to expand their capacity to acquire knowledge and create innovation. Transactive memory allows for a group to become efficient and effective in learning and retrieving knowledge. Overall, it improves decision making processes and the efficiency of the group, allowing for better outcomes. This is achieved by the division of responsibilities from specialising, shortening the time needed for finding the appropriate knowledge (as everyone knows the “guy” or “gal” to go to) and the shared understanding of the teammates regarding the interpersonal relations in the team. This means that everyone knows exactly who to go to for a certain domain of knowledge, while understanding their strengths and weaknesses, allowing for well coordinated interactions. Because of this, transactive memory only works in groups with limited numbers, with the maximum number being similar to the Monkeysphere (150).

Many studies prove the effectiveness of transactive memory. It has been found that couples have much better memory recollection compared to when they are paired with a stranger. In the modern technological era, transactive memory has expanded to the internet, with studies showing that people are more likely to know the source of information (such as Wikipedia) rather than the actual information. Given the ease of access to the internet and large databases containing all the information we need, sometimes it is far more efficient learning how to find these sources rather than rote learning all the information.

Posted in Life & Happiness

Fried Chicken

Posted on by Jinavie

Although it may be unhealthy, it cannot be denied that fried chicken is one of the most delicious foods in existence. The following is a simple recipe for fried chicken without using a deep frying machine.

Ingredients:

Chicken drumsticks x 4 (although any piece can be used)
Flour 50g
Egg x 1
Breadcrumbs 50g
Salt 1/2t
Cajun spice or paprika 1t
Canola oil

  1. Wash the chicken then season it with salt and cajun spice. It is good to rub oil on the chicken as well to keep it moist.
  2. Let the seasoning set in for about 10~15 minutes. Meanwhile, preheat the oven to 180°C and line an oven tray with tin foil.
  3. Pour the flour into a plastic zip-lock back. Place the chicken in the bag, seal it, then shake it to coat the chicken with the flour.
  4. Beat the egg then dip the chicken in the egg to coat it.
  5. Coat the chicken with breadcrumbs. You can sprinkle some thyme, oregano or parsley on top as well.
  6. Rub or spray some oil on the tin foil to prevent the chicken from sticking.
  7. Use a knife to make 2~3 deep gashes in the chicken. This helps it cook through.
  8. Arrange the chicken on the tray then put it in the oven for about 15 minutes until the top is golden.
  9. Flip the chicken over to make sure both sides are thoroughly cooked. Cook for another 10 minutes.
  10. When the outside is crisp and golden, take out the chicken and check that the inside is cooked well.
  11. Serve with some potato fries and vegetables.

Posted in Psychology & Medicine

OCEAN

Posted on by Jinavie

A major challenge in psychology has been the question: “how do we categorise personalities?”. There have been many different approaches, one famous model being the Big Five model. This model describes five traits, summarised as OCEAN:

  • Openness: Describes a person who is creative, imaginative, abstract and curious. People with high openness scores are often skilled in the arts and inventing. They always seek new experiences. The perfect example for Openness is Leonardo da Vinci. This trait can be subdivided into the subcategories: Imagination, Artistic interests, Sensitivity, Adventurous, Curiosity and Tolerance for diversity.
  • Conscientiousness: Describes a person who is reliable, trustworthy, hardworking, plans ahead, goal-oriented, efficient, responsible and moral. The perfect example for Conscientiousness is Robocop. The subcategories are: Sense of competence, Orderliness, Responsibility, Achievement-striving, Self-discipline and Deliberateness.
  • Extraversion: Describes a person who is chatty, energetic, passionate, stubborn, social, easily makes friends and opinionated. The perfect example for Extraversion is Eddie Murphy. The subcategories are: Friendliness, Gregariousness, Assertiveness, Activeness, Excitement-seeking and Positive.
  • Agreeableness: Describes a person who likes to help others, is compassionate, friendly, forgiving, trusting, cooperative and empathetic. It is more about humanism rather than describing a spineless person. The perfect example for Agreeableness is Mother Teresa. The subcategories are: Trusting, Sincerity, Altruism, Compliance, Modesty and Sympathy.
  • Neuroticism: Describes a person who is unstable, easily depressed or worried, dark and susceptible to negative emotions. It is not the same as “neurotic”, which describes a mental disorder. The perfect example for Neuroticism is Woody Allen. The subcategories are: Anxiety, Self-consciousness, Hostility, Self-indulgence, Moodiness and Sensitivity to stress.

When the model is applied to a person, the person gets a score as a percentage for each trait. By using the Big Five score, one can compare different personalities and predict what kind of behaviour they would show in different situations.

Posted in Science & Nature

Common Side-Blotched Lizard

Posted on by Jinavie

Rock-paper-scissors is a fun game that is played by people of all ages and nationalities. But there is also a species of lizards that plays this game, albeit in a rather strange way.

Male common side-blotched lizards, also known as Uta stansburiana, have a mating strategy based on the game, where the chances of “winning” is equal and one type has an advantage over another type while being disadvantaged against another type. The males come in three types, differing in the colour of their necks: orange, blue and yellow.

  • Orange-throated males are the strongest but do not like to form a bond with the female (i.e. do not want a relationship). They can easily win over a fight against the blue-throated males to win the female, but yellow-throated males can sneak in and win over the female instead. Orange beats blue but loses against yellow.
  • Blue-throated males are middle-sized but do form strong bonds with females. They lose in a fight against orange-throated males, but can easily defend against yellow-throated males as they are always with their female. Blue beats yellow but loses against orange.
  • Yellow-throated males are smallest but can mimic females, letting them approach females near orange-throated males. They mate with the females while the orange-throated male is distracted, but this strategy does not work with blue-throated males as they have stronger bonds with the females. Yellow beats orange but loses against blue.

Interestingly, although the proportion of the three types average out to be similar over the long run (much like the probability of a person playing a certain hand), in the short term the preferred strategy tends to fluctuate. For example, orange-throated males may strive with their masculine strength for four or five years, but then the trend will slowly switch to yellow-throated males and their mimicking, female-stealing strategy. After another four or five years, blue-throated males will make a comeback as they win over females with their strong bonding.

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Posted in Science & Nature

Rock-Paper-Scissors

Posted on by Jinavie

Rock-paper-scissors is a game with a long history. The earliest example of the game is a Chinese game called huoquan, which follows a cyclic rule where the frog eats the slug, the slug dissolves the snake and the snake eats the frog. The reason why rock-paper-scissors has been saved throughout history is because of the uncertainty it contains. Any hand you choose, the chance of winning is the same. Ergo, there is no single best choice and there is no move that will always win. But this is still a game played by people. It is not a game played by emotionless machines, meaning that you can use human psychology, the surfacing of emotion and specific signs and movements to help deduce your opponent’s hand. Mentalist Derren Brown can read tiny flickering of muscles in the opponent and microexpressions to pull off his “undefeatable rock-paper-scissors trick”, but this is near impossible for a normal person to try. However, you can use the following strategies to improve your odds.

  1. Use paper on a beginner: Statistically, people prefer using rock. Males especially have a strong tendency to play rock.
  2. Use scissors on an experienced player: People who know the first trick can be defeated by going one step further.
  3. Use a hand that loses to the hand your opponent played: This uses the psychology of the opponent wanting to mix up hands and wanting to beat the hand you last played (which is the same as theirs as you drew).
  4. Say what you will play and play that hand: In a competitive situation like rock-paper-scissors, people tend not to trust others. Thus, if you say you will play a certain hand, they will think is a trap and not play the hand that defeats that hand. For example, if you said you will play scissors, the opponent will play paper or scissors and you will either win or draw.
  5. Do not give the opponent a chance to think: People have a subconscious tendency to play a hand that beats the hand that they played before. Without time to think, the subconscious takes action meaning that you can predict their move. If you do the same as strategy 3 and play a hand that loses against the opponent’s previous hand, you will win.
  6. Suggest a certain hand: This is a form of hypnosis where you suggest something to the opponent’s subconscious. To use this trick, pretend to go over the rules by saying “rock, paper, scissors” then play a certain hand. The opponent will likely play the hand that the subconscious last saw.
  7. If you keep drawing, use paper: This is the same as strategy 1.

Unfortunately, rock-paper-scissors has an equal probability of a win and a draw, meaning draws are rather common. Thus, a computer engineer called Samuel Kass devised a game where two additional hands are added: rock-paper-scissors-lizard-Spock. Lizard is played by making your hand into the shape of an animal’s head, while Spock is played using the Vulcan Salute from the science fiction show Star Trek, where you make a V-shape with two fingers on each side. The rules are as follows.

Scissors cut paper. Paper covers rock. Rock crushes lizard. Lizard poisons Spock. Spock smashes scissors. Scissors decapitate lizard. Lizard eats paper. Paper disproves Spock. Spock vaporizes rock. Rock crushes scissors.

As each hand has two ways of winning, the odds of winning is 10/25, or 2/5 and the odds of drawing is 5/25, or 1/5. As you can see, you have double the chance of winning compared to drawing, making the game much faster to play than the original game.

Posted in Life & Happiness

Reed

Posted on by Jinavie

Can you describe a reed that sways and bends to and fro in the face of wind as strong? Most people associate the word “strong” with something like a tree that stands tall and grand, never bowing to the will of the wind. However, the reed teaches us the important lesson of the strength of flexibility. When a storm strikes, what is left behind are not strips of reed but smashed pieces of wood.

A rigid tree appears strong because it stands so tall and does not move, but in the face of strong winds the opposite happens. As a tree does not bend much, it must face the full force of the wind and ultimately the tree snaps when there is sufficient force. On the other hand, the reed flows and bends in the direction of the wind, deflecting the force away. Not only that, but a reed has both flexibility and elasticity, meaning no matter how much they are bent and beat down, they can stand back up. Ergo, flexibility is stronger than rigidity. Skyscrapers use this concept and they are designed to sway on a windy day. The philosophy is also adopted in martial arts, with deflecting a strike to the side being a far more effective defence than taking the force of the strike directly.

Flexibility has far greater implications than withstanding the wind or a strike. The most important example is personal relationships. A person who never bends and sticks to their opinions may deem themselves “tough”, but they are in fact just a stubborn idiot drowning in a pool of arrogance. Sure, if it is a very important debate then you should stand your ground and state your opinions, but in a normal conversation it is just foolish to angrily state that you are right and never back down. It is far wiser to be flexible like a reed and meet the other person halfway, bending slightly to see their opinions and reach a peaceful agreement. If you stand tall like a tree you will end up standing alone on the same spot forever, but if you can bend to the other person’s flow like a reed, you can have a healthy relationship with them and co-operate. If both sides bend a little for each other, then they can have a smooth conversation and be able to establish co-operation, understanding and solidarity. Flexibility makes both you and the other person happy and allow for co-existence – something that is inevitable in human societies.

The tree may tease and mock the reed for its apparent helplessness and docility against the wind, but after the storm has passed, only the reed still stands. Remember this: instead of ignoring another person’s views and repeating the same words over and over, listening carefully to the other person and being flexible and tolerant is a far wiser and braver act. A wise man is someone who possesses the wisdom and benevolence of being flexible like the reed.

1 + 1 = 3

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