Physics Behind a Compass

Besides learning about equations and forces in physics class, I got an opportunity to research the physics behind everyday objects. I chose to research about a compass. Compass is a very useful object. This object is used for navigating in dense forests to the open underwater world. But what makes it work? This is when the magnetic field came in.

Imagine the earth has a bar of magnet buried inside. The magnet has a south pole pointing to the geographic north pole and a north pole pointing to the geographic south pole. This is an analogy that explains why the earth has a magnetic field. 

No one really knows exactly why there’s that magnetic field. But there’s a theory on that topic. The core of the earth consists of very hot iron and because of pressure, it’s solid. The movement caused by heat from the core plus the rotation of the earth cause the liquid outside that surrounds the core to move in a rotational pattern. It’s believed that this rotational forces create a weak magnetic field and attract the end of magnets, but only lightweight magnet can rotate and point north.

The needle of the of a compass is a lightweight magnet and that’s why the north needle is attracted to the magnetic south pole, which is the geographic north pole. The needle needs to be lightweight because the magnetic field is weak. If it were to be heavier, there wouldn’t be enough force for the needle to rotate.

Hope you enjoy this mini-lesson about the physics behind a compass!

 

Kampot Writer and Reader Festival

From the 2nd to the 5th of November I attended Kampot Writer and Reader Festival, which had a theme of courage. This year, this event opened an opportunity for young writers to submit stories encompassing the theme of courage. I submitted my short story, Brittle, but unfortunately, it wasn’t awarded in the event. 

During the event, I met a lot of poets, authors, and artists.  I did many activities during those few days, and there were some favorites. One of them was painting a mural with quotes that are related to literature.  Another favorite was writing a story with an idea of “reaching a goal after a moment of darknes,” as part of a session about “My Life as a Fairy Tale.”

  • Listening to master Kong Nai and his son playing Chapei, an iconic musical instrument

LMRT Trip October 26th to 29th

On this trip, I felt a lot less pressure, since we have less to do than the previous one. We did a few dives to solidify our skill underwater. One of the skills that many people struggled with and the most important skill is being neutral buoyant underwater. Another skill we focused on during this trip was navigation skill. Navigating underwater is totally different from doing it on land. It’s easier to recognize landmark on land than underwater. So being able to read the compass underwater is a crucial skill. 

As a marine researcher of Cambodia, it’s essential that we can identify species in our ocean. Later on, as the project progress, we will need to take surveys and keep track of the population of fish and other species. To make sure we can identify fish properly, we studied the species and took identification quizzes. 

 

Nefarious Story Writing

In literacy class on Halloween, I picked a line that says “I got an eerie feeling when I heard…” and my classmate took turns to continue my story. The story ended being about a woman ghost singing a lullaby in my room. To add a twist to the story and make it less scary, I made that situation into a dream!

Some main and scary words from my story

Sophie’s World Book Review

Sophie’s World is written by Jostein Gaarder. He is famous for writing books about children’s perspective for young readers. However, Sophie’s World is suitable for different ages. In this book, Sophie turned fifteen during a course taught by a complete stranger to her, who then known to her as Alberto Knox. The book is subtitled as “A Novel About the History of Philosophy,” which Gaarder put together 2000 years of western philosophical thoughts into this thrilling book. Gaarder taught high school philosophers for 11 years, so he knows how to turn this very complicated subject into an understandable language for teenagers, which makes the book even more fascinating. This Norwegian author often wrote each chapter of Sophie’s World focusing on one philosopher with their philosophical projects. Those old philosophers include some famous ones, such as Socrates, Plato, and Aristotle.

Socrates was a philosopher from Athens and is famous for his quote, “One thing only I know, and that is that I know nothing.” He is a very ambiguous philosopher because he never wrote a single line about his project, but he had a great influence on European thoughts. People know about his project through Plato’s writing. Plato wrote a lot of Dialogues and he made Socrates as his main character. We are not sure if the words were actually Socrates’s words. Socrates didn’t like to instruct people, instead, he discussed. He liked to listen and ask questions. He started conversations as if he knew nothing. Socrates believed that his conscience told him what’s right, “He who knows what good is will do good.” He was concerned with the universal definition of right and wrong. He conceived that the ability to think what’s right or wrong is in people’s reason and not in society. He also thought that doing the right things make us happy and when we do wrong things we don’t know that it’s wrong since no one would choose to be unhappy.

Plato was a student of Socrates. Plato concerned about the relationship between what is eternal and immutable in nature and society. He believed that everything tangible in nature can change. Those things are made of the materials that can be eroded over time, but they are made of the mold or form that is eternal and immutable. He called this idea. Plato believed that all tangible objects will eventually become a soap bubble because nothing that exists last forever. He has a point that we can’t have true knowledge of things that keep changing. We can only have opinions about. We can only have true knowledge with the things we can understand using our reasons. Everyone has the same reasons, but our senses vary between different people. For example, if we ask thirty people what color is the most beautiful, we’ll get many different answers. If we ask them what 8 times 5 is, they’ll give the same answer, hopefully, because that’s what the reason tells us. Plato found mathematics very interesting because it never changes. In short, Plato divided reality into two regions. One is the world of sense, which we only have incomplete knowledge with because it always changes. Two is the world of ideas, which we can have true knowledge by using our reasons and it is eternal and immutable.

Aristotle is a pupil at Plato’s Academy for almost twenty years. His father is a physician, and therefore he’s interested in nature study. Aristotle was obsessed with the change in nature, nowadays described as a natural process. This philosopher was very different from Plato. Plato used his reason and Aristotle used his senses. Plato wrote poetry and myths, and Aristotle wrote precise encyclopedia. Aristotle thought the opposite from Plato about the ideas. He thought that the idea or form came after the actual form. The idea came from people after seeing the actual thing. Aristotle decided that the reality is made of two things: substance and form. What things are made of is substance and form is the characteristic of each specific thing. He also thought that substance always has the potential to become form. For example, a chicken’s egg would potentially turn into a chicken, but it doesn’t mean that all chicken’s eggs will become chickens. Aristotle also concerned about nature’s scale, so he divided living things into two categories: plants and creatures. Creatures can then be divided into animals and humans. Those categories are distinguished by their characteristics. For instance, living creatures have the ability to perceive the world they’re living in.

Those are just three famous philosophers that were introduced in Sophie’s World. There are more philosophers with amazing projects that made people notice the reality of the world we’re living in.

 

 

ISPP Model United Nation 2017

This year ISPPMUN was very different from last year for me. Last year I was in a Junior committee and this year I was in the Environmental Assembly with a lot of people who are older than me. This year I was the main submitter for one of the resolutions we created during the conference. I was able to make a lot of speeches and point of information (asking questions). By attending MUN, it prepares me to be a change agents since it encompasses networking, collaborating, innovating, problem-solving and many other change agent characteristics.  I am looking forward to doing this next year again!

Khmer Research about Pchum Ben

In Khmer class, we did a small research project about Pchum Ben since it was an upcoming ceremony for Cambodia. Pchum Ben is an opportunity for Cambodia people to consecrate to those who passed away. 

 

Physic Friction Lab

In order to learn about coefficient of static friction, we did a lab. Static friction is the friction that keeps an object stay at rest. The goal of this lab was to calculate the coefficient of static friction by figuring out the angle of a wood plank when an object started moving. We did this with different material listed below. 

Data Table

Advanced Placement Statistic

This year I take Advanced Placement (AP) Statistic course as math essential. Personally, I think statistic is the most applicable subject in math. We can relate our everyday life with statistic. For example, we can see how weight is associated with height by doing statistical analysis.

An example of the content in AP Statistic book

 

      

LMRT Trip September 28th – 3rd of October

Liger has its first long-term science research team, Liger Marine Research Team, and I’m one of its members. We will be doing long-term marine research that includes surveying marine life underwater. To do that, we need to be certified divers. On October, I became one of the youngest certified open water divers in the world! I couldn’t believe that myself because I wasn’t a person who is passionate about being in the water.

In the next three years, starting this month, our team travels to Koh Seh in Kep to study about the ocean. During the first trip, we did a lot of underwater courses and dives in order to get us certified. It was really hard for me because I needed to put so much energy into doing activities on this trip. There were many times that I heard certified divers said they took months to become certified. I and my teammates only took a week to become certified! I’m extremely proud of that!

I’m looking forward to further research the marine ecosystem in Cambodia and involve in protecting our ocean.