Friday 15 November 2019

Day 5 - A day of household trends and the stars

Brief Introduction of our day!
Today we visited the LG Signature Showroom and Nowon Cosmos School! Read on to find out more!

Day 5
We started off the day with a tour of the LG Signature Showroom. On our tour, we got to see how technology and interior design go hand-in-hand for stylish, comfortable, convenient and energy efficient daily living. 

Our tour at LG Signature Showroom
This kitchen may look simple but it's full of high tech features!
OLED lights are not only energy saving, but super on-trend too!

Now you see me, now you don't! OLED TV screens are flexible and can be neatly tucked away!

Then it was time for lunch in the famous Gangnam area, Oppa Gangnam style!


Lunch time on a cold rainy day!

We then spent the rest of the afternoon at Nowon Cosmos School and Seoul Conservatory! 
Here, we got to see exhibits on the history of universe and our solar system, go on an exclusive tour of the conservatory's telescopes and even watch a short movie in the planetarium. 



Informative displays on the history of our universe

Hey look, biology of the universe!

Having a look through one of the telescopes
The main telescope at Seoul Conservatory!
Time for a short movie at the planetarium!

Here are our reflections that capture our learning at Nowon Cosmos School: 

"During our trip to Nowon Cosmos School, we learnt more about the universe by watching a short movie in the planetarium. As we reclined in our seats and gazed upon the star-filled screen, I was very intrigued when the movie explained about the workings of the sun. 

The sun is actually a star and on its surface are sun spots. Sunspots are temporary phenomena on the sun’s photosphere that appear as spots darker than its surrounding areas. They are storms on the sun’s surface that are marked by intense magnetic activity and play host to solar flares and hot gassy ejections from the sun’s corona. Solar flares are violent eruptions of plasma from the chromosphere of the sun that is whipped up by intense magnetic activity. 

After further research, I found out that the flares often disturb the Earth’s atmosphere electrically and interfere with radio transmissions. In addition, the aurora borealis and aurora australis are results of flare activities that inject energetic particles into Earth’s magnetic field. Isn’t that cool?" - Beatrice

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"One interesting thing I have learnt today at Nowon Cosmos School is about nuclear fusion. 

Nuclear fusion is the process by which the sun is able to produce energy. Nuclear fusion reactions take place because the sun's gravity forces nuclei of the hydrogen atoms to fuse together into helium. From this reaction, energy is released and converted into light and heat energy. In fact, this is also the same process that takes place in thermonuclear (fusion) bombs. In the sun, the process occurs in a controlled manner, whereas in a bomb, it happens all at once in a big chain-reaction type of explosion. 

After further research, I found out that in order for the sun to keep generating the same amount of energy at the same rate, the temperature and density of the sun's core must rise, brightening the sun. However, when the sun runs out of hydrogen in its core in about 5 billion years, the nuclear reactions will then take place in the shell around the core instead. This causes the core to contract and heat up, eventually burning helium into carbon. While the core is contracting, the hydrogen burning around it will heat up the outer layers, causing these layers to expand. When the time comes, the Sun will then become what is called a red giant and its radius will be large enough to envelop the Earth." - Jia Huey


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"I have learnt so many new things about our solar system from our visit to Nowon Cosmos School! 

The first piece of history that intrigued me was that in the infant stages of astronomy, ancient Greek astronomers believed in a geocentric system. In this system, the Earth was assumed to be the center of the cosmos through observations of the apparent motion of celestial objects around our planet. Turns out, they were proven wrong and instead, the sun is the centre of our solar system!

In addition, I found out that Venus is roughly the same size as Earth but its atmosphere is rich in greenhouse gases and sulfuric acid instead. As a result, it's surface temperature reaches around 400 degrees Celsius so Venus undergoes intense geological activity with a vast lava outflow continuously transforming its surface. Through these processes, Venus' crust is totally renewed every few hundred million years! Isn't that spectacular?"  - Priscilla

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"After visiting Nowon Cosmos School, I now have a better understanding of how a telescope works and the different types of telescopes there are. A telescope is a tool that astronomers use to see faraway celestial objects like the moon, stars, planets etc. We ourselves can also use it to explore the beautiful night sky. 

There are two types of telescopes. The first is the refracting telescope which is made up of lenses. The purpose of using lens is to allow light to bend as it passes through the lens. This helps the refracting telescope make far-away objects seem closer and more visible. In order to make a stronger refracting telescope, thicker lenses are used to help us to see celestial objects that are even farther away. The second is the reflecting telescope which uses curved mirrors instead of lenses. This is because mirrors are thinner so they make for lighter telescopes. The curved mirrors are able to concentrate and reflect light from the night sky in order for users to capture the image of a celestial object. It allows the images to seem closer and less blurry. One limitation of using mirrors is that the image of the object will be inverted. Fortunately, there’s a simple solution for this; all we need to do is just use another mirror to help invert the image so it is the right-side up.

From our visit, I realised that the physics concepts we have learnt in school are really applied in the construction of good telescopes. This truly amazed me!" - Gao Jie

Last dinner in Seoul 

Oh how time flies! It's now our last night in Seoul. Tomorrow we have one last item on our itinerary before heading home! 

Stay tuned for more! :)

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