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OV Astronomy
Добавлен 17 июл 2022
I create videos on physics and astronomy topics, ideas and experiments which interest me and want to share with the world - I hope you enjoy!
What are Tensors in Physics? (satirical)
I created this video from a collection of experiences which myself and several of my other peers went through during our undergraduate physics degrees when it came to learning tensors from a physics perspective. It is meant as a light-hearted video to highlight the struggles many of used faced when it came to learning various difficult topics which weren't covered in enough detail/ brushed aside/ assumed knowledge. After many conversations with people, I came to realise I wasn't alone, and struggling with certain concepts (such as tensors in particular) not being adequately explained was an experience shared by many undergraduates. I guess then you could say this video is designed to rais...
Просмотров: 1 611
Видео
Why some Physicists think you are a Boltzmann Brain
Просмотров 1,5 тыс.4 месяца назад
Is what we experience really what there is? Physics (in its current state) seems to suggest maybe not. This has led to the Boltzmann Brain idea, a paradox which predicts that it is far more likely that the Universe does not really exist - at least not in any physical form. In this video I build up to the Boltzmann Brain Paradox by considering the physical laws rooted in thermodynamics which exp...
How Was General Relativity Tested And Proved To Be Accurate?
Просмотров 7125 месяцев назад
General Relativity is the current most complete theory we have for understanding gravity. It was developed over 100 years ago by Albert Einstein and crucially models gravity as fundamentally different to a classical force. Instead, gravity is the curving of spacetime caused by the presence of mass (energy). Put simply, mass causes spacetime to bend, and spacetime tells mass how to move. This in...
Why Cold Dark Matter?
Просмотров 2,6 тыс.11 месяцев назад
To try everything Brilliant has to offer-free-for a full 30 days, visit brilliant.org/OVAstronomy . The first 200 of you will get 20% off Brilliant’s annual premium subscription. Why do we believe the Dark Matter in the Universe to be cold? What does it mean for Dark Matter to be cold? And how does this affect the evolution of structure formation in the Universe? This video answers these along ...
Virtual Particles, Vacuum Energy and the Worst Prediction in Physics
Просмотров 7 тыс.Год назад
To try everything Brilliant has to offer-free-for a full 30 days, visit brilliant.org/OVAstronomy . The first 200 of you will get 20% off Brilliant’s annual premium subscription. What causes the expansion of the Universe and spacetime itself? One of the biggest successes of the 20th century was the development of Quantum Field Theory (QFT) which combines ideas of a wavefunction to describe part...
The Missing Baryon Problem in Physics
Просмотров 3,6 тыс.Год назад
There are many unsolved problems in physics, the most famous being the mysteries of quantum gravity, supersymmetry, the Planck scale, dark matter and dark energy… but there is also what has become to be known as the Missing Baryon Problem - less well known but equally important to cosmologists. The Universe contains energy from various sources, with 3 still being relevant today: Dark Energy (wh...
What Happens Beyond the Planck Length?
Просмотров 219 тыс.Год назад
The Planck Length is a mysterious constant in modern physics which is often credited as being the smallest allow length in nature or a sort of resolution of the Universe. In reality, this length is derived from considering a particle who’s reduced Compton wavelength is comparable to its Schwarzschild radius; the first being an idea from Quantum Mechanics and the other a concept from General Rel...
What's Really Inside A Proton?
Просмотров 95 тыс.Год назад
The proton is one of the most prevalent and important particles in our Universe and has a complex internal structure. Protons are not fundamental particles. Most pre-degree level physics teachers might only briefly discuss that a Proton is made up of 3 quarks and is held together by the Strong Nuclear Force via Gluons. However this is a far simplified down model of what really goes on inside a ...
Gravity in Particle Physics
Просмотров 40 тыс.Год назад
One of the Biggest Problems in Modern Physics is creating a model which can accurately describe the Universe on the largest and smallest scales. Notably, no current theories are able to explain the role of Gravity on Quantum scales. While Gravity is well explained by Einstein's General Relativity on universal sizes, it is so weak compared to the other Fundamental Forces that its effect cannot b...
Exoplanet Detection
Просмотров 481Год назад
Space holds many physics mysteries even today with new discoveries being made almost daily. Some of these are close to home and within our own solar system such as that of the dwarf planet Eris back in 2005, however some are thousands of light years away such as the first exoplanets ever discovered: Phobetor and Poltergeist over a decade earlier in 1992. There are many ingenious ways scientists...
Why is there a Green Flash at Sunset?
Просмотров 3,2 тыс.Год назад
The Elusive Green Flash Explained! This beautiful physics phenomenon is able to be observed at both sunset and sunrise and is the result of some pretty simple astronomy and optics. In this video I explain the relatively recent history and physics surrounding the green flash, starting with light, the electromagnetic spectrum and refraction. We will see how this leads to the causes of rainbows an...
How Many Atoms Are in The Sun?
Просмотров 1,3 тыс.Год назад
Here I show how relatively simple physics can be used to derive the number of atoms within the sun. I will explain the necessary experiments and results acquired over centuries of science and compile them in a theoretical analysis involving classical physics and gravitation to determine the mass of the sun. From here I examine the type of matter and elements which make up the sun to ultimately ...
Test Dark Energy Yourself Using Real Galaxy Data
Просмотров 674Год назад
This video describes a physics and cosmology based project aimed to inspire others to complete their own research using computational methods, statistics and freely available data sources online. I discuss the theory of dark energy starting from Hubble and the redshifting of distant galaxies, through Einstein, General Relativity, Gravity and the Friedmann Equation, to using Type 1a Supernovae a...
The Simple Big Bang Model Is Not Complete
Просмотров 2 тыс.Год назад
Modern science teaches people from childhood that the Universe was created at a single point in space and at a single point in time in what has become known as the Big Bang. However, the early Universe is far more complicated than this description. Space and Time itself did not simply begin and expand from a singularity 13.8 billion years ago, but instead have evolved in a more complex way. Sim...
The Reality of Fictitious Forces
Просмотров 1,9 тыс.Год назад
Acceleration makes comparing the motion of objects in different reference frames confusing and causes forces to be present in some frames and not in others. These are inertial (or fictitious) forces and while the name may imply they are not real, in reality they have significant effects to humanity. Afterall, the planet we live on is rotating about its tilted axis which is an acceleration due t...
This Is How 2 Fundamental Forces Were Once The Same...
Просмотров 18 тыс.Год назад
This Is How 2 Fundamental Forces Were Once The Same...
What Is The Cosmic Microwave Background? (CMB)
Просмотров 9 тыс.Год назад
What Is The Cosmic Microwave Background? (CMB)
The Different Types of Redshift in Astrophysics
Просмотров 771Год назад
The Different Types of Redshift in Astrophysics
Why Is The Night Sky So Dark? Olbers' Paradox Explained
Просмотров 1,6 тыс.2 года назад
Why Is The Night Sky So Dark? Olbers' Paradox Explained
How Scientists Measure The Distance To Stars and Galaxies
Просмотров 2,5 тыс.2 года назад
How Scientists Measure The Distance To Stars and Galaxies
The Truth About Gravity And The Universe
Просмотров 151 тыс.2 года назад
The Truth About Gravity And The Universe
Track The Sun's Path Using A Solarcan
Просмотров 1,1 тыс.2 года назад
Track The Sun's Path Using A Solarcan
Mathematicians laugh in superiority at the physicists.
My grandmother sailed a lot and she saw it but most people didn’t believe her.
3:32 Equal transit time
We really don't know if all the fundamental forces combine together at high enough temperatures, to make the grand unified theory. What i want to know is if gravity was a thing, then why didn't the entire universe collapse back into a singularity? That's a big problem.
At 1m distance I'm not sure which force is stronger, but at long distances seems to me that the gravity is the only force that matters!
Good stuff, as always. Liked & Subscribed
Woah
had no idea what you was on about when it came to the math, but others have said the Planck length is like having a human hair being the size of the observable universe then the Planck length would be a tree on earth
No. It doesn't prove anything. It's not even a paradox. The assumptions are wrong. What if light only travels so far before dissipating all its energy into the quantum foam? What if there are dark clouds that scatter brigh light into darker infrared light?
Thank u 😀 for this video
That was another five minutes and twenty-three seconds of my life I won't get back, trying (and failing) to find out what a tensor is. I should have read the bit about "viewer discretion is advised". Still, it was entertaining - smiles.
Aha... so proton's make up everything. I knew we couldnt trust those bastards.
What if we find a way in the future to turn off the Higgs field? Go even faster than light?
Proton-to-electron mass ratio: 2(2·3·5)²+[2(u+u+d)-mᵉ]/mᵉ = 1 836,15267 electron = mᵉ = 0,51099895 MeV proton = mᵉ·2(2·3·5)²+2(u+u+d)-mᵉ = 938,27208943 MeV neutron = mᵉ·2(2·3·5)²+2(u+d+d+mᵉ)-d-(1/2)mᵉ = 939,56542052 MeV quark d = 4,75416145 MeV quark u = 2,36916387 MeV electron(mᵉ) = 0,510998950 MeV muon (mᵐ) = 105,658373568 MeV = mᵉ · ᵉ√ ̅̅ ̅̅(2⁴+5⁴)·(5⁵-2·3³)̅̅ ̅̅ e = 2,7182818284... (Napier's constant, Euler's number); mᵐ = muon mass ; mᵉ = electron mass mᵐ = mᵉ * [(2⁴+5⁴)*(5⁵-2·3³)]^(1/e) tau (mᵗ) = 1 776,938 MeV = mᵉ · [(2⁴+5⁴)ᵠ꞉(2·5)-e] φ = 1,6180339887... golden ratio ; e = 2,7182818284... (Napier's constant, Euler's number) mᵗ = mᵉ * [(2⁴+5⁴)ᵠ/(2*5)-e] mᵗ = mᵐ · ⁴√ ̅̅ ̅̅ 2⁷·5⁴-3 ̅̅ ̅̅ α = 1꞉ ᴾᴵ√ ̅̅ ̅̅ ̅̅(2⁴+5⁴)ᵠ · e⁵ ̅̅ ̅̅ ̅̅ (fine structure constant) α = 1/[(2^4+5^4)^φ*e^5]^(1/π) = 0,0072973525677660... φ = 1,6180339887... golden ratio, e = 2,7182818284... (Napier's constant, Euler's number)
I invented ugawumba , 1 ugawumba is equivalent to 0.00001 planck length.
Good video. Though conjectures are treated as science nowadays even by scientists
Could the Planck length be the membrane between us and the infinite Universes around us?
string theory is so useless ..... I wish it would just go away
Disclaimer… I never took higher level physics, I just watch a bunch of YT videos…I know that you can use tensors to transform a 2D map onto a 3D surface say a globe while maintaining proportions. So from that fact I knew that tensors contain relational data. If I transform x how much does y change in order to maintain the same angles. I believe this would be controlled by some scaling factor, some rule, or generalization in the matrix.
The Google search history… lol 😂
Would love to see a video on the electric universe theory
Nice Vid..keep going 🌌👍
So you end the video and you still don’t give your viewer an explication of what a tensor truly is? Danggg
Yes 😄
So from a photon’s perspective, it would see the entire universe and all time past and future. Just like the inhabitants of Flatland don’t realize that we can see inside their homes, their safes and even inside their bodies, but the 2D inhabitants can only see lines of different lengths and determine shapes by going around them and feeling them.
Can anyone tell me why the energy given off in a scattering experiment at Planck scale by definition is a black hole, please? It was almost the last thing he said in the video.....Thanks!
It’s a party in there
Should we expect the mass to fluctuate within a certain margin if the internal dynamics are so messy?
Are baryons and fermions synonymous ?
Baryons are particles made of 3 quarks. Fermions are particles with anti-symmetric wavefunctions (half integer spin). All baryons are fermions, but there are other non-baryonic fermions such as electrons, neutrinos, muons etc.
So basically, a "proton" identifies a location in space where the uncertainty principle is particularly active in producing fundamental "particles" that are constantly interacting with each other.
Ur mom is a proton
Smith Ruth Davis Melissa Taylor Shirley
Beautiful video! Is it only inside protons and other particles that quarks show up or is does it happen everywhere in space?
Remember when one i think japanese researcher faked a pentaquark paper. Mission failed succesfully
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unfortunately for all you "CMB disproves steady state" people, you base it all on an assumption that the power of the universe is relegated to the limitation of the photon. So desperate to disprove God and so eager to use evolution to do so; it's laughable at the hubris and arrogance! where is there any proof that the universe took billions of light years to expand? You would think that quantum physics would totally destroy this ignorance. But it doesn't because of the underlying agenda of "Destroying God"! the power of the universe > the photon.
I don't believe we know what's inside a Proton as we add energy that turns into matter in particle accelerators creating new particles.
It’s close enough
Gravity is not a force
I wonder if this has anything to do with motion.
There are NO subatomic particles. The atom is a helix like your DNA. There is a positively charged side and a negatively charged side, spiraling around a hollow tube created by the push toward and away from each other. Just like every beam of light. Just like the magnetic flow. It’s all the same action. The charge difference/ratio between the positive and negative in htz (like nano or pickhtz) is what creates the bonds, shape and total weight and charge. Think of it like more a battery.
Very good. Next time reduce the speed of delivery of narration... could it be made more illustratitive?
QM classicalized in 2010: Forgotten Physics website uncovers the hidden variables and constants and the bad math of Wien, Schrodinger, Heisenberg, Einstein, Debroglie, Planck, Bohr etc. Further: “The Final Theory: Rethinking Our Scientific Legacy “, Mark McCutcheon ended ALL Standard Theory/Model by the Expansion Theory. A proton is a collection of 1836 expanding electrons and add a bouncing expanding electron makes a hydrogen atom. “G” calculated from first principles- the hydrogen atom- in 2002. Try to keep up.
Hello , when the universe first formed, did subatomic particles interact with the Higgs field and change Z bosons, gaining excess charge and mass? Does this change occur in the form of absorption and release? and how does it turn out? If it results in absorption, since the mass of the Z boson is high, shouldn't the masses of the quarks and electrons that absorb the Z boson also be high?
Uncertainty applies to our ability to make precise measurements. Theres no reason or evidence that it's a physical property that cause 'particles' to be unable to decide if they exist making 'turn there existence off and on'
You’re a moron, you’re indoctrinated, you don’t have what it takes to understand anything.
If we are all truly living in a Boltzman Brain, there wouldn't be an individual thought that I would have that you wouldn't know. 😉
Every model we use is a human model. We use a model of gravity that is incredibly precise, and may yet improve upon it, but at the end of the day it is still a human created model and therefore not a perfect representation of reality. Same goes with any observable phenomenon. This is why AI will never have an accurate perception of reality as it can only rely on human models to understand the world.
This is so absolutely true to the core. We are introduced to tensors, but tensors are related to a myriad of other functions and, although we are working with tensors, we STILL DO NOT KNOW WHAT A TENSOR SPECIFICALLY IS. The following is a simple Google Search for the question, "What is a tensor in simple terms?" “In mathematics, tensors are geometrical objects that describe the linear relationships between geometric, nu- merical, and other tensile vectors.” “The simplest way to imagine a tensor is that it's a vector in a product space. And, of course, we have spinors and twistors. I suspect that the tensors, spinors and twistors are basically just mathematical objects that can be used to describe physical properties, just like scalars and vectors. In fact, tensors are merely a generalisation of scalars and vectors; a scalar is a zero-rank tensor, and a vector is a first rank tensor. The best way to grasp it intellectually, I suspect, is to just work on some algebraic maths problem and a tensor would be mentally written as an algebraic object that describes a multilinear relationship between sets of algebraic objects related to a vector space. Tensors may map between different objects such as vectors, scalars, and even other tensors. And, for some reason, I still cannot envision how the tensor concept is able to enable one to focus on what part of the maths equation we are trying to solve for, but it somehow works. For some reason, the tensors, spinors and twistors are the alternate maths version of the Heisenberg Uncertainty Principle.
@3:00 this is a critical point, the Compton wavelength is certainly *_not_* "purely quantum mechanical". The mass is gravitational charge (or inertia, but then there's the Equivalence Principle), so it is a relationship that involves gravity. GR is already a quantum theory imho, just not classically, since classical GR presumes trivial spacetime topology (locally Minkowski) which is fundamentally wrong-headed. Any spacetime containing matter cannot be locally Minkowski. There has to be non-trivial topology. Provided that topology can contain ER bridges it will contain closed timelike curves, and that yields a quantum theory. The indeterminism due to CTCs is precisely the same as QM indeterminacy (gives a nondistributive orthomodular lattice of measurement propositions), only this indetermism is superior in a sense since it is explained with spacetime topology, whereas in QM it is just unexplained axiom.