What Holds the Universe Together? The Fundamental Forces
93,322
Published 2023-07-30
There are a number of fundamental forces, or interactions as they tend to be called, and I’m going to take each of them in turn and explain what they do. They are called fundamental because they can’t be resolved into other simpler interactions. For instance the force of friction, can be explained by using another force called electromagnetism, electromagnetism however, can’t be explained using any simpler force, and so electromagnetism is one of our fundamental interactions, but more about that later. The interactions that I’m going to look at today are electromagnetism, that I’ve already mentioned, the strong interaction, which is sometimes also called the strong force or the strong nuclear force. The weak interaction or the weak force or the weak nuclear force, and gravity, but gravity is a bit strange so I’ll leave that till the end.
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Stable elements graph
Table_isotopes.svg: Napy1kenobiderivative work: Sjlegg, CC BY-SA 3.0 (creativecommons.org/licenses/by-sa/3.0), via Wikimedia Commons
Chapters
0:00 Introduction & Explanation of what will be covered
1:20 The Strong Interaction
4:10 Particles Involved
5:30 The Weak Interaction
8:45 Beta Minus Decay
11:20 Beta Plus Decay
12:55 Electromagnetism
13:45 Virtual Particles
14:45 Why do like charges repel?
15:50 Why do opposite charges attract
17:10 The Electroweak Force
18:10 Gravity
20:40 Gravity and acceleration
All Comments (21)
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This is the first time I've actually heard a decent explanation of what the weak force is!
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17:00 one explanation could be that the virtual particle waves are oriented in the opposite way (up or down) thus when they make contact they cancel each other out, preventing them from being reabsorbed. This causes a surplus of virtual particles on the opposite sides, propelling the real particles toward each other.
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This Episode has given me some insight regarding the weak nuclear force. I have had at least a layman's understanding of the other 3 forces for a long time. It is great to at last grasp this. I really like this channel.
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I never get tired of just how bizarre particle physics is.
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Awesome video. Good to see that you're still making . For some reason I missed the past few videos. This channel starting to grow. Soon you'll hit 100k. Great Work.
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Omg I just got back to the channel after a while and saw the video. Then I thought "wow he made the video" just to see my name on the screen. You made me really happy sir ❤
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Thanks for taking your time to make a surprisingly good informative video on our universe. I plan to watch another one.
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Welcome back you have been missed and so has the channel.
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also i found that Physics videos by Eugene Khutoryansky help to explain the wave function duality as well 🙂
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Please continue to keep making these videos!!!!!!!!!!!
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Do you think you could do a video covering the Schrödinger Equation in relation to polar spherical harmonics and why the quantum numbers make the funky beautiful shapes of the electron orbitals (s,p,d, etc.) I heard there’s a lot of history behind it but haven’t yet heard a simplified, cohesive, and understandable explanation. Love the content as always!
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your work is absolutely great so informative and explained well .
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Subscribed, and absolutly impressed by the accuracy and good explenations on this Channel. Here you can learn new things. Im so glad about your channel
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This was excellent! Thank you!
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Great idea for a video! Happy to see you still creating, 🎉❤
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Fantastic video, great job.
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I think the section about opposite charges attracting could've been better explained in the field visual that you had started with. My mind's eye saw it this way as you explained it: The "P" particle is radiating these virtual waves; however, the waves would then be realized as a "dip" by the "e" particle, thus giving it momentum toward the "P" particle. The same visual is how I thought about the "e" to "e" interaction that you described: The "e" particle is constantly emitting these tiny waves as well, but in the "e" field these waves will be seen as "peaks" that grow the closer the "e" particles get to each other and drive them apart. I realize this still doesn't really explain the "why" about why each particle would experience these waves differently, but I think the field visual does make a lot of sense. Especially if you maybe had a little visual of the particles "surfing" on the waves.
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It drives me insane thinking about how large the universe is; and its all made up of the tiniest of things! I'm sure we'll soon discover even tinier things!
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The Stable Nuclide N-Z Graph has got to be one of my favourite graphs in Physics tbh.
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Well done!..easy to follow.
