News: Jiangmin has decided to settle as a freelance writer and will be publishing only on an occasional basis from now on.
If you can still remember me from my long absence, then great! I can happily say that my Advanced Higher exams are done and dusted, and I very recently graduated from high school. This Autumn I’ll be starting an Integrated Masters degree in Theoretical Physics…somewhere, I’ll update you on that one in August.
As you may know, I took Advanced Higher Physics this year and around 30% of the qualification is made up of a research project which must be based on a topic of the course. For the previous qualifications, it was required to do your project on a pre-selected topic, which consequently took away the fun, because the topics selected were either classical mechanics or electricity, I.e. not modern physics. But with this? I thought, QUANTUM IT IS.
One of the most amazing things in the course is the de Broglie hypothesis of Quantum mechanics which I very quickly made my project title.
Some background on the de Broglie Hypothesis
In the 20s, the early stages of the construction of quantum theory, a physicist Louis de Broglie postulated the wave particle duality of nature suggesting that all matter had both wave and particle properties.
Particles and waves are very different things. Particles are localised – they are in one place at one time and therefore can have a precise position. Particles have mass, they can bounce off one another and transfer energy through collision. Waves, on the other hand, are delocalised – to assign a “position” to a wave doesn’t really make much sense, waves can carry energy without the net transfer of mass, capable of interference, diffraction, reflection and so on.
I have realised the last time I published a post was way back in November and that maintaining a blog is, in fact, tremendously difficult during preliminary exams period, which very fortunately just ended. It is not guaranteed that the general schedule for updates will be followed due to final year school workload at the moment but, I’ll no doubt try my best.
I have always enjoyed mathematics in school, whether it was the logic behind exam problems or solving tricky little mathematical puzzles. I had first become aware of the field of topology research after the announcement of the 2016 Nobel Prize in Physics, where pretzels, doughnuts and mugs were used to demonstrate topological properties considering the different number of holes each contains. In a sense, if two objects have the same number of holes, they are topologically equivalent, because they can be deformed into the same object without tearing or glueing or taping.
Now, I do not claim that I understand topology at the slightest, yes, the subject is way beyond me currently, but it’s always nice to read around some of its core ideas.
A little update on where I am with everything at the moment. Again I am incredibly apologetic for updating less frequently recently due to a lot going on. As you might already know, I entered the Breakthrough Junior Challenge, been notified as a semifinalist, and recently crowned Regional Champion of Europe – the popular vote process definitely was more time consuming than I had imagined, but now (I hope) I can share with you some of the exciting things I’ve been wanting to write about for a while.
Firstly this post is on what I consider as THE BIGGEST DISCOVERY IN PHYSICS this year – the neutron star collision. You might already know that the 2017 Nobel Prize in Physics was awarded to the three leading physicists who were involved in a worldwide collaboration in the search for gravitational waves. The “kilonova” on August 17th was not only a detection of another gravity wave but it also unveiled so many more utterly amazing things about the cosmos we were yet to discover.
To start off let’s jump straight into the science behind the event of colliding Neutron stars. Neutron stars can be thought of as the less extreme versions of black holes – which are a result of very massive stars collapsing under their own gravitational pull and forming a point of infinite space-time curvature. These stars are the remnants of the supernovae of stars that are roughly 10 to 29 solar masses, too big to form a white dwarf (like how our own Sun will after its death) and too small to form a black hole. When a star this size explodes, its gravity is so strong that it literally forces electrons and protons to combine into neutrons, and the neutron star is stopped from further collapse by neutron degeneracy pressure. Neutron stars are extremely small and dense, their diameters are the size of cities but a teaspoon can be the weight of Mount Everest. Thus, there is no wonder how they produce immensely strong gravitational fields and not only cause gravitational lensing but also gravitational waves.
I have decided to submit an entry to this year’s Breakthrough Junior Challenge, which is a competition in which you have to make a 3-minute video explaining a scientific concept/idea to a general target audience. I chose the Black Hole Information Paradox as my topic because I was reading into the Holographic Principle over the summer and fell in deep haha.
The following is my video – I hope you like it and could give it a thumbs up on Youtube if that’s a possibility.
My life is a little hectic at the moment due to UCAS (University Application) deadlines and so on. While in the middle of composing my personal statement, I found a small tribute text I had written about Carl Sagan last year as a response to the following question for an application.
If you could have dinner with anyone alive or dead, who would it be and why?
One of the most important laws of Physics is perhaps one we have all heard once in a while – the second law of thermodynamics.
This law states that the entropy – in a closed system – in which we can infer as the Universe, will always increase.
A common misconception with the term entropy is that it is a measure of disorder. A “disordered” state does not necessarily mean that it has high entropy and vice versa. Entropy is rather the number of ways particles can be arranged. We can take tea and milk as an example, as many people do. Looking at the tea and milk system, at the instantaneous moment when you pour milk into tea, it is perceived to have low entropy, this is because the milk molecules are virtually sitting on top of the tea molecules. When you wait for a second or two until the milk starts to blend and dissolve into the tea, the system begins to increase in entropy, because there are so many more ways for the milk and tea molecules to arrange themselves in this sense, rather than being stacked on top of each other. Continue reading →
While my lovely co-writer friend Jiangmin has been having a summer holiday filled with medicine, biological research and UKCAT revision (good luck!), she’s headed off this week to complete a Summer school course – just wanted to say, all the best Jiangmin!
I thought this week I might leave Physics aside for a little and talk about the importance of space flight and exploration, especially the Mars issue.
Many leading scientists believe that in order for humans to progress and maintain our survival we must think about progressing in terms of space exploration, whether that be missions like Juno and Cassini to aid research on planetary science, missions like Voyager – the furthest space craft from Earth to explore the outskirts of the solar system or actually sending humans to Mars which seems to either be the general public’s cup of tea, or not.
Black Holes seem like something that only exists in Science fiction, like Dark Matter and Energy, however, these astronomical objects are in fact at the heart of theoretical research within Cosmology. Research involving Black Holes may likely help us uncover more about the mysteries of Quantum Gravity, something Physicists believe to be the Theory of Everything.
In simple terms, a Black Holes is a region in which the gravitational influence is so strong that nothing, not even light, can escape its pull beyond the Event Horizon, which means that the Escape velocity is essentially greater than the speed of light. Escape velocity is the speed in which an object needs to travel at to escape a gravitational field, e.g. the Earth’s.
Bonjour fellow bloggers and blog viewers, I just came back from a fantastic residential week at Scottish Space School and I just thought it would be great to share this great experience with you all.
The Scottish Space School, as I mentioned several months before in a “thoughts” post, is a residential week aimed at students in their second last year of high school who are interested in pursuing a career in Engineering, Space Exploration or something along these lines, and is situated in the University of Strathclyde, Glasgow. This year I was one of the lucky 100 students to be selected from over 500 applicants based around Scotland to attend the week running from 11th to 16th June 2017.
The week-long programme included different engineering workshops, lectures from senior NASA guests, talks from people who worked in the Space industry, fun social events and many more.
After the many ramblings I made regarding Dark Matter previously, I want to turn around and think about Baryonic Matter again. Ordinary Matter is something that physicists know much more about than the mysterious Dark Matter and Dark Energy, even though in reality they do make up more than 95% of our known Universe. We are more knowledgeable about Baryonic Matter because of its presence all around us, after all, it is everything we can see and detect: from forms of life, elements in the Earth’s crust and mantle, buildings, cars, the Earth, the Sun, all of the stars… you get the idea.
Now, the stuff that makes up the matter. Firstly what comes to our mind may be elements, which are a table of 100 odd substances that are often called the “primary constituents of matter”. These elements can be identified through their chemical properties and are placed in the Periodic table in order of increasing atomic number (the number of protons in its atom’s nucleus).
Atoms are another level down from the elements of the periodic table, which distinguishes different types of atoms. Atoms themselves is another study on its own. In the early 20th Century, Rutherford and a couple other physicists discovered an awful lot that directly correlates to our modern understanding of the atom through an experiment – firing alpha particles at a piece of gold leaf.