Posted in Science & Nature

A Beautiful City

What makes a city or town aesthetically pleasing? Places such as Prague, Florence and Santorini are famous for their picturesque cityscape. Instead of specific famous buildings or tourist spots, postcards from these areas could just show any part of the city and they would still be beautiful. What sets these places apart? How is it that despite all our technological development, modern cities can’t compare to the beauty of cities that are hundreds or thousands of years old?

Korean architect Yoo Hyun-Joon proposes a theory regarding two factors: material and shape. Consider the following matrix using the two:

Out of these four, the combination that we find the most beautiful is when a city has simple materials but complex shape. For example, Santorini is made only of stone buildings painted white and blue. But because it is built on a volcano, the ground is uneven and the building shapes differ to accommodate for this. Florence is almost entirely made of bricks. Traditional Korean houses were made only of wood. This is because in the old days, due to labour costs and poor logistics, cities were usually built with materials abundant in the surrounding area. Instead of varying materials, architects would challenge the limit of materials with varied shapes.

Nowadays, thanks to trade and globalisation, it is much easier to obtain materials from all over the world such as glass, concrete and steel. Furthermore, we can use industrial vehicles to change the terrain to flatten the ground and we use tall rectangular buildings to maximise space. Thus, we end up with the ugly, chaotic combination of many materials and simple shape.

The solution to making a beautiful city is simple then – create a building restriction that unifies the building material to one. A good example is Newbury Street in Boston, USA. This shopping district is famous for its classy red brick appearance, thanks to a building restriction that ensures every new shop built on the street must have the side of the building facing the street built using red bricks.

Of course, just unifying the building material to any one thing does not solve the issue. For example, cities made of only concrete rarely are as appealing. What is important is to use local materials that best represent the context of the city and the land it was built on.

Posted in Science & Nature

Diamond

The hardest object on the Earth is diamond. A diamond is famous not only for its hardness but also its luxuriousness and unique lustre. One might call it the king of all jewels. Would you believe then that such a beautiful, tough gemstone is made of the same thing as charcoal and graphite? Diamond is crystallised carbon where the carbon atoms are neatly arranged in a pyramid lattice. Charcoal and graphite are also made of carbon but the carbon atoms are placed in a different configuration, giving them a different look and characteristics. This unique lattice shape can only be achieved under extreme pressure (such as in the mantle of the Earth or in a meteorite). Thus, a diamond is just carbon that has endured stress well.

If diamond is the hardest material, then how can one cut it? The answer is simple – use a diamond. As it is near impossible to polish or cut without knowing this, diamonds were only used in the form of ores until the modern age. In 1919, a mathematician named Marcel Tolkowsky calculated the optimum proportions of a diamond cut to obtain the best lustre. The first time he struck the diamond with a nail, he fainted from the shock. He succeeded the second time and devised the round brilliant cut used most popularly nowadays.

Diamond is especially used in engagement rings. About 80% of all engagement rings sold in the United States are diamond rings. This may be because the toughness of diamond symbolises undying love, but another key reason is due to diamond syndicates and their marketing campaign. Even until the 1930’s, there was a tradition of women keeping their virginity until their engagement. Thus, if a man proposed to a woman, took her virginity and broke off the engagement, the woman had a legal right to sue the man. Diamond syndicate De Beers thought that this tradition was an excellent money-making scheme. They planted the idea that offering a diamond ring when proposing put a price on the woman’s virginity and encouraged men to buy more expensive rings to show their love and respect for the woman. This manipulative advertising campaign was a great success and the price of diamond skyrocketed very quickly. Now, a diamond ring is almost an essential item when proposing. Thanks to these companies, there are still many African children who are being slaved in diamond mines.