By Shauqi&Hatim
The stairs are one of the oldest buildings in architectural history, they have always played a central role in the history of humanity, although it is difficult to tell exactly in wich year they were born, it is believed his appearance was by the year 6000 before Christ. The stairs seems to change shape with the change of architectural eras, reflecting the trends used in different ages and revealing the talent of those who designed them.The first stairs in the history were wood trunks fitter together, these kind of stairs were used to acquire strategic positions for survival. Stairs nowadays only be used to climb to high places and to shorten the time to pass through floors of buildings. Therefore, a stair is a medium for human or people to move or to go through between floors and building.
A stair contains of a zigzag compartment designed for people to step or climb it to their destination. There are also many types of stairs, that is box stairs, open stairs and other stairs. Box stairs may be built using more expensive species of woods where carpet won't hide this better wood. An Open Stair is one that has nice finished mitre returns on the end of the open treads for a classier look. An elevator or lift is a vertical transport vehicle that efficiently moves people or goods between floors of a building. They are generally powered by electric motors that either drive traction cables and counterweight systems, or pump hydraulic fluid to raise a cylindrical piston. In other words, elevators are a complex design that was created by Archimedes probably in 236 B.C. and then it has been developed from time to time becoming the elevator that is in the present times.
The advantages and disadvantages of stairs compared to elevators are the stairs can make a person to be healthy because they have to use their energy to climb it, while the usage of lifts can’t make your body to be healthier. The stairs also have no weight limit, therefore making it to be used by many people without worrying whether it is over the limit or not. But, the elevators, however have weight limit, making only few people can use it for a time. Nevertheless, elevators also have its own advantage that the stairs does not have. The elevators can be used to transport heavy items and materials, while stairs only making the person who is transporting the item to be a burden to himself. Plus, elevators also can help the handicap to go through between floors and buildings to make it easier for them to go upstairs or downstairs.
However, both of elevators and stairs have their similarities. Among the similarities are they are both used by humans to go through floors and buildings. They also can shorten our time to do various works. Imagine if both of these inventions are not exist, we have to climb through floors and might become a dangerous thing to do. Lastly, they are also being used in almost all of the buildings nowadays, making these inventions a very meaningful invention to humankind.
Thursday, July 29, 2010
Tuesday, July 27, 2010
Glasses vs Contact Lenses
byAfham&Haziq
Undeniably, our sight is the most vital among our five senses. Without it we will be a total handicapped, unable to do a lot of things on our own. But what if we still have the ability to see, but it is affected by long or short-sightedness? We have two known surgery-free solution for this, which is wearing the never-out-of-date glasses, or the stylish, trendy contact lenses. Both of them are used for correcting the sight of a person, but what is the difference between both of them? What are the advantages and drawbacks of wearing both of them respectively?
Glasses are a frame that holds lenses worn in front of our eyes. It corrects our sight by converging or diverging the light ray into our eyes. Glasses are worn since the ancient times, though the design and structure had evolved due to our demand on comfort and practicality. But the basic design, lenses and frames, are still the same, due to its reliability. Glasses are easy to wear, hassle-free most of the time, and do not need a specific care. They also came in various styles nowadays, which will make sure you would never be out of date. But the wearer must also bear a few disadvantages, such as they need to remove their spectacle when participating in few rough sports such as taekwondo and rugby, and cost them their vision. They also must face the most annoying part of wearing spectacle, which is to wipe them everytime the lenses get blurred buy the haze that appears when you have hot meals, or getting out from an air-conditioned building.
But there is an alternative for glasses, which does not need to be wiped at all. Contact lenses are small, lightweight, silicon based lens that worn in front of the cornea. Unlike glasses, the lenses are directly attached to the eye, thus giving the user a wider range of vision. Compared to glasses, contact lenses also do not alter how the wearer looks, since few of us say that they do not look good in glasses. The wearer also has more freedom in physical activities and of course blurred lenses would not be an issue. But contact lenses need delicate care, which is quite a fuss for most of us. They need to be kept in solutions if not worn, and sleeping with it will also be a problem. But the most feared of all, is the risk of getting infections through the contact lenses, due to lack of hygiene care, thus leading to cataract. In worst cases, it will also lead to temporary blindness that can only cured by surgery.
It is up to us whether to wear a spectacles or contact lenses, based on our preference. Both of them have their own pros and cons, so choose wisely. But just bear in mind that our sight is precious, so be thankful most of the time and take a good care of your eyes.
Undeniably, our sight is the most vital among our five senses. Without it we will be a total handicapped, unable to do a lot of things on our own. But what if we still have the ability to see, but it is affected by long or short-sightedness? We have two known surgery-free solution for this, which is wearing the never-out-of-date glasses, or the stylish, trendy contact lenses. Both of them are used for correcting the sight of a person, but what is the difference between both of them? What are the advantages and drawbacks of wearing both of them respectively?
Glasses are a frame that holds lenses worn in front of our eyes. It corrects our sight by converging or diverging the light ray into our eyes. Glasses are worn since the ancient times, though the design and structure had evolved due to our demand on comfort and practicality. But the basic design, lenses and frames, are still the same, due to its reliability. Glasses are easy to wear, hassle-free most of the time, and do not need a specific care. They also came in various styles nowadays, which will make sure you would never be out of date. But the wearer must also bear a few disadvantages, such as they need to remove their spectacle when participating in few rough sports such as taekwondo and rugby, and cost them their vision. They also must face the most annoying part of wearing spectacle, which is to wipe them everytime the lenses get blurred buy the haze that appears when you have hot meals, or getting out from an air-conditioned building.
But there is an alternative for glasses, which does not need to be wiped at all. Contact lenses are small, lightweight, silicon based lens that worn in front of the cornea. Unlike glasses, the lenses are directly attached to the eye, thus giving the user a wider range of vision. Compared to glasses, contact lenses also do not alter how the wearer looks, since few of us say that they do not look good in glasses. The wearer also has more freedom in physical activities and of course blurred lenses would not be an issue. But contact lenses need delicate care, which is quite a fuss for most of us. They need to be kept in solutions if not worn, and sleeping with it will also be a problem. But the most feared of all, is the risk of getting infections through the contact lenses, due to lack of hygiene care, thus leading to cataract. In worst cases, it will also lead to temporary blindness that can only cured by surgery.
It is up to us whether to wear a spectacles or contact lenses, based on our preference. Both of them have their own pros and cons, so choose wisely. But just bear in mind that our sight is precious, so be thankful most of the time and take a good care of your eyes.
Sunday, July 18, 2010
Fast Food Invention
Carl’s Junior’s burgers, Mac Donald’s fries, and KFC’s fried chicken, all of these fast delicacies is all consumed by us more and more every day. According to what we saw in the video, a lot of kids nowadays eat fast foods compared to the kids in the life before them. We want to show the differences from before and after the invention of fast foods and their similarities.
Before fast foods were invented, people only eat at home or normal restaurants. They usually only ate foods that are only made by themselves. They also did not use chemical substances to enhance the flavors of their cooking. However, they have to prepare it. For example, a family wants to have a dinner, therefore they have to cook it before they can eat or they have to wait for their foods in the restaurants. They also did not have many varieties if they eat at home because they only have to eat the meals that their wife or their mother’s prepared for them.
Next is the life after the fast foods are invented. People don’t have to go home to eat as they can buy fast food almost everywhere. They also have a lot of varieties of foods to eat because they have a lot of fast food restaurants that they can choose. Plus, they also have many franchise that is opened in many countries, making it easier for them to choose where they want to eat. Besides that, they can get their foods in an instant, hence the term “fast food”. The downside is that fast foods are very unhealthy as they use a variety of flavour enhancers such as Monosodium Glutamate (MSG). This leads to the increase of the rate of obesity, which is a very big problem in many countries.
As the conclusion, despite of the differences, good things also happen after the invention of fast foods. Families still dining out together and enjoy their meals whether at fast foods or in the past restaurants. Fast foods also helps us to save more time to have meals that satisfy our crave. Inventions of drive-through is also saving our precious time if they want to hurry and go to work or doing errands.
Before fast foods were invented, people only eat at home or normal restaurants. They usually only ate foods that are only made by themselves. They also did not use chemical substances to enhance the flavors of their cooking. However, they have to prepare it. For example, a family wants to have a dinner, therefore they have to cook it before they can eat or they have to wait for their foods in the restaurants. They also did not have many varieties if they eat at home because they only have to eat the meals that their wife or their mother’s prepared for them.
Next is the life after the fast foods are invented. People don’t have to go home to eat as they can buy fast food almost everywhere. They also have a lot of varieties of foods to eat because they have a lot of fast food restaurants that they can choose. Plus, they also have many franchise that is opened in many countries, making it easier for them to choose where they want to eat. Besides that, they can get their foods in an instant, hence the term “fast food”. The downside is that fast foods are very unhealthy as they use a variety of flavour enhancers such as Monosodium Glutamate (MSG). This leads to the increase of the rate of obesity, which is a very big problem in many countries.
As the conclusion, despite of the differences, good things also happen after the invention of fast foods. Families still dining out together and enjoy their meals whether at fast foods or in the past restaurants. Fast foods also helps us to save more time to have meals that satisfy our crave. Inventions of drive-through is also saving our precious time if they want to hurry and go to work or doing errands.
Tuesday, July 13, 2010
(NATURE) Earthquakes
Earthquake
In this modern world, there are many natural disasters that occurs rapidly in many countries. But the natural disasters that mostly occurs is the earthquake. Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. They do not just slide smoothly; the rocks catch on each other. The rocks are still pushing against each other, but not moving. After a while, the rocks break because of all the pressure that is built up. When the rocks break, the earthquake occurs. During the earthquake and afterward, the plates or blocks of rock start moving, and they continue to move until they get stuck again. The spot underground where the rock breaks is called the “focus” of the earthquake. The place right above the focus that is on top of the right is called the “epicenter” of the earthquake.
Earthquake-like seismic waves can also be caused by explosions underground. These explosions may be set off to break rock while making tunnels for roads, railroads, subways, or mines. These explosions, however, don't cause very strong seismic waves. You may not even feel them. Sometimes seismic waves occur when the roof or walls of a mine collapse. These can sometimes be felt by people near the mine. The largest underground explosions, from tests of nuclear warheads, can create seismic waves very much like large earthquakes. This fact has been exploited as a means to enforce the global nuclear test ban, because no nuclear warhead can be detonated on earth without producing such seismic waves.
Upon many of the countries that suffers earthquake damages, there are Japan, Chile, Haiti, and Indonesia. In Haiti lately, many of the survivors have suffered many problems such as famine, diseases such as malaria, and other social problems such as lack of foods, medicines and other basic necessities. Therefore, many of people around the world have donated their effort and money to Haiti survivors. Wyclef Jean and Former Presidents George W. Bush and Bill Clinton are all high-profile individuals that are helping to raise money for the earthquake. In addition, many stars urged their fans to give to the earthquake relief at the Golden Globe awards.
Besides that, earthquake also can cause other natural disaster that is more dangerous that is the tsunami. Tsunamis or tidal waves are massive sudden, unexpected and very large ocean waves. They are caused by a sudden displacement (movement of water). This could be due to an undersea earthquake, an undersea landslide or meteor/asteroid strike. Still, until now there are many earthquakes that happens and it is unstoppable!
In this modern world, there are many natural disasters that occurs rapidly in many countries. But the natural disasters that mostly occurs is the earthquake. Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. They do not just slide smoothly; the rocks catch on each other. The rocks are still pushing against each other, but not moving. After a while, the rocks break because of all the pressure that is built up. When the rocks break, the earthquake occurs. During the earthquake and afterward, the plates or blocks of rock start moving, and they continue to move until they get stuck again. The spot underground where the rock breaks is called the “focus” of the earthquake. The place right above the focus that is on top of the right is called the “epicenter” of the earthquake.
Earthquake-like seismic waves can also be caused by explosions underground. These explosions may be set off to break rock while making tunnels for roads, railroads, subways, or mines. These explosions, however, don't cause very strong seismic waves. You may not even feel them. Sometimes seismic waves occur when the roof or walls of a mine collapse. These can sometimes be felt by people near the mine. The largest underground explosions, from tests of nuclear warheads, can create seismic waves very much like large earthquakes. This fact has been exploited as a means to enforce the global nuclear test ban, because no nuclear warhead can be detonated on earth without producing such seismic waves.
Upon many of the countries that suffers earthquake damages, there are Japan, Chile, Haiti, and Indonesia. In Haiti lately, many of the survivors have suffered many problems such as famine, diseases such as malaria, and other social problems such as lack of foods, medicines and other basic necessities. Therefore, many of people around the world have donated their effort and money to Haiti survivors. Wyclef Jean and Former Presidents George W. Bush and Bill Clinton are all high-profile individuals that are helping to raise money for the earthquake. In addition, many stars urged their fans to give to the earthquake relief at the Golden Globe awards.
Besides that, earthquake also can cause other natural disaster that is more dangerous that is the tsunami. Tsunamis or tidal waves are massive sudden, unexpected and very large ocean waves. They are caused by a sudden displacement (movement of water). This could be due to an undersea earthquake, an undersea landslide or meteor/asteroid strike. Still, until now there are many earthquakes that happens and it is unstoppable!
Subscribe to:
Posts (Atom)