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How the Big Bang gave us time, explained by theoretical physicist Sean Carroll. Subscribe to Big Think on YouTube ► 🤍 Up next, The Universe in 90 minutes: Time, free will, God, & more ► 🤍 In this Big Think interview, theoretical physicist Sean Carroll discusses the concept of time and the mysteries surrounding its properties. He notes that while we use the word "time" frequently in everyday language, the real puzzles arise when we consider the properties of time, such as the past, present, and future, and the fact that we can affect the future but not the past. Carroll also discusses the concept of entropy, which is a measure of how disorganized or random a system is, and the second law of thermodynamics, which states that there is a natural tendency for things in the universe to go from a state of low entropy to high entropy. He explains that the arrow of time, or the perceived difference between the past and the future, arises due to the influence of the Big Bang and the fact that the universe began in a state of low entropy. Carroll also touches on the possibility of time travel and the concept of the multiverse. Read the video transcript ► 🤍 0:00 What is time? 1:32 How the Big Bang gave us time 3:31 How entropy creates the experience of time About Sean Carroll: Dr. Sean Carroll is Homewood Professor of Natural Philosophy — in effect, a joint appointment between physics and philosophy — at Johns Hopkins University in Baltimore, and fractal faculty at the Santa Fe Institute. Most of his career has been spent doing research on cosmology, field theory, and gravitation, looking at topics such as dark matter and dark energy, modified gravity, topological defects, extra dimensions, and violations of fundamental symmetries. These days, his focus has shifted to more foundational questions, both in quantum mechanics (origin of probability, emergence of space and time) and statistical mechanics (entropy and the arrow of time, emergence and causation, dynamics of complexity), bringing a more philosophical dimension to his work. Read more of our stories on the Big Bang: Why we’ll never see back to the beginning of the Universe ► 🤍 The Big Bang no longer means what it used to ► 🤍 How to prove the Big Bang with an old TV set ► 🤍 About Big Think | Smarter Faster™ ► Big Think The leading source of expert-driven, educational content. With thousands of videos, featuring experts ranging from Bill Clinton to Bill Nye, Big Think helps you get smarter, faster by exploring the big ideas and core skills that define knowledge in the 21st century. ► Big Think+ Make your business smarter, faster: 🤍 Want more Big Think? ► Daily editorial features: 🤍 ► Get the best of Big Think right to your inbox: 🤍 ► Facebook: 🤍 ► Instagram: 🤍 ► Twitter: 🤍
Richard Feynman's mind worked in fascinating ways. Visit 🤍 to start learning STEM for FREE, and the first 200 people will get 20% off their annual Premium subscription. Watch our documentary on Robert Oppenheimer, the father of the atomic bomb: 🤍 Newsthink is produced and presented by Cindy Pom 🤍 Grab your Newsthink merch here: 🤍 Thank you to our Patrons, including Igli Laci Support us on Patreon: 🤍 Filming location: Vintage 1950s pickup truck was filmed in Ontario, Canada. Thank you to the owner Joanne Kapp. Check ourther leggings business: 🤍 and her crafting supplies business: 🤍 Special thanks to the following for permission to use their material: 0:39 Richard Feynman photo courtesy of artist Tamiko Thiel 🤍 8:25 Photo of Oppenheimer from 1953 courtesy of Kim Cranney. Image scanned from the original negative: 🤍 11:27 Vintage Mosler Safe Co. Safe 🤍 13:02 Richard Feynman gravestone courtesy of Tim Jones The interviews and footage aired in the story constitute Fair Use for news reporting purposes. Other elements were purchased by Newsthink Ltd. or fall under a creative commons license in which re-use is allowed. 0:15 Feynman’s IQ was reported to be 125 by his biographer James Gleick in his book: Genius: The Life and Science of Richard Feynman (pg. 41) Image sources: 1:57 Seattle Municipal Archives, Attribution 2.0 Generic (CC BY 2.0) 🤍 via Flickr 2:17 Bundesarchiv, Bild 102-13378 / CC-BY-SA 3.0, CC BY-SA 3.0 DE 🤍 via Wikimedia Commons 2:56 Hans Bethe image: Los Alamos National Laboratory, Attribution, via Wikimedia Commons 3:19 Schuyler Towne 🤍 Creative Commons Attribution license (reuse allowed) 6:37 JabberWok, CC BY-SA 3.0 🤍 via Wikimedia Commons 6:39 Maschen, CC0, via Wikimedia Commons 7:09 Murray Gell-mann image: I, Joi, CC BY-SA 3.0 🤍 via Wikimedia Commons 7:34 Jerrye & Roy Klotz, MD, CC BY-SA 4.0 🤍 via Wikimedia Commons 8:09 Samba en France - Rio de Janeiro 🤍 Creative Commons Attribution license (reuse allowed) 8:21 Antony-22, CC BY-SA 4.0 🤍 via Wikimedia Commons 12:59 Еловиков Сергей Михайлович, CC BY-SA 4.0 🤍 via Wikimedia Commons 13:03 Zamunu45, CC BY-SA 4.0 🤍 via Wikimedia Commons Articles and interviews referenced: 13:10 Tuva Online article on Michelle Feynman’s trip to Tuva 🤍 13:21 The Los Angeles Times interview 🤍
We put chatbot ChatGPT to the test with some physics questions. More links and info below ↓ ↓ ↓ Featuring Professor Philip Moriarty... His blog on this topic can be found at: 🤍 ChatGPT: 🤍 More videos with Professor Moriarty: 🤍 See our computer science sister channel Computerphile: 🤍 Visit our website at 🤍 We're on Facebook at 🤍 And Twitter at 🤍 This project features scientists from The University of Nottingham 🤍 Patreon: 🤍 Sixty Symbols videos by Brady Haran 🤍 This video filmed by Sean Riley Email list: 🤍
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Signup for your FREE trial to The Great Courses Plus here: 🤍 Five areas of physics worth remembering: Classical mechanics, energy and thermodynamics, electromagnetism, Relativity, and Quantum Mechanics. Classical mechanics - two main concepts worth knowing. The first is Newton’s second law: F= ma: Force equals mass times acceleration. If you apply a force to a fixed mass, it tells you how much acceleration you will get. And knowing acceleration which is the change in velocity, you can make predictions. The second equation is the law of universal gravitation. it allows us to determine the motion of heavenly bodies. It says that the gravitational attraction between two bodies is the product of their masses divided by the distance between them squared, times a constant, called Newton’s gravitational constant. Energy is not a vector like force or momentum, but it is just a number. Work is closely related to energy. It is force times distance traveled. Energy for most objects consists of kinetic energy plus potential energy. KE is the energy of motion, It is KE = ½ M V^2 – the more mass you have and/or the more velocity you have, the more energy you have. Gravitational potential energy is expressed as PE = m g h – mass times the gravitational acceleration times the height. The total energy of an object is both Kinetic energy plus potential energy. Potential energy can take many forms. Gasoline or petrol has chemical potential energy. Important: Energy is always conserved. It is not created or destroyed. It only changes form. Thermodynamics is the study of work, heat, and energy on a system. We showed energy is how much work you could do. But another form of energy is thermal energy. If a car is moving and you apply the brakes, the kinetic energy of the car gets converted to thermal energy, created by friction of the car’s brakes. Temperature is the average kinetic energy of atoms in a system. Thermal energy is the total kinetic energy of atoms in a system. Entropy is a measure of disorder, or more accurately, the information required to describe the micro states of a system. The 2nd law of thermodynamics states that entropy of an isolated system can never decrease. Energy at lower entropy can do more work than energy at high entropy. The one way flow of Entropy seems to be the only reason we have a forward flow of time. Electromagnetism is the study of the interaction between electrically charged particles. The essentials are in Maxwell’s equations. If you have a static object with a charge, it will affect only other charges. If you have a static magnet, it will affect only other magnets. It will not affect charges. But if you have a moving charge, it will affect a magnet. And if you have a moving magnet, it will affect a charge. The constants mu naught and epsilon naught are the permeability and permittivity of free space. These two constants determine the speed of light because they measure the resistance of space to changing electric and magnetic fields. Special Relativity: Einstein presumed that the speed is the same in any frame of reference. This was one of the postulates. The second postulate was principle of relativity - the laws of physics are the same for all observes who are moving at the same velocity relative to each other. Einstein showed that the only way these can be true is if time was not fixed, but was relative. General relativity: Later Einstein showed using the same assumptions, there would be no way to tell if you were in an accelerating reference frame or standing stationary on earth. A flashlight beam will bend in gravity. But since light always takes the shortest path between any two points, this means that space-time itself is bending. Quantum mechanics: Three principles are important. First by Max Planck, says that energy is not continuous, but is quantized. The amount of energy equals the frequency of the radiation times Planck's constant. Using this, Einstein later showed that a photon is both a wave and a particle. The second is the Heisenberg's uncertainty principle: you cannot know both a particle’s exact position and it’s exact momentum at the same time. For a particle with mass, this means if you know exactly where a particle is, you don’t know how fast going. If you know exactly how fast it’s going, you don’t know where it is. #allphysics #arvinash Schrodinger's equation: prior to measurement, quantum systems are in superposed states. This means that their properties can only be expressed as a wave function. A wave function simplified, is a set of probabilities. So in a hydrogen atom, you can’t know where to find the electron in advance. All you can know is the probability of where you might find it, if you measured it. Prior to measurement, all quantum systems are waves of probabilities. This is not a limitation of our measuring devices. It is a limitation of reality. Become a patron: 🤍
This video tutorial provides a basic introduction into physics. It covers basic concepts commonly taught in physics. Direct Link to The Full Video on Patreon: 🤍 Access The Full 1 Hour 42 Minute Video on Patreon: 🤍 List of Physics Videos on Patreon: 🤍 Physics Final Exam - 6 Hour Review - 100 Practice Problems: 🤍 Full 1 Hour 42 Minute Video on Youtube: 🤍 Youtube Membership: 🤍 Access My Video Playlists: 🤍
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Help Us with the PBS DS Survey Here: 🤍 PBS Member Stations rely on viewers like you. To support your local station, go to:🤍 Sign Up on Patreon to get access to the Space Time Discord! 🤍 The Nobel prize in physics is typically awarded to scientists who make sense of nature; those whose discoveries render the universe more comprehensible. But the 2022 Nobel has been awarded to three physicists who revealed that the universe is even stranger than we thought thanks to Quantum Entanglement Check out the Space Time Merch Store 🤍 Previous Episodes Mentioned: Quantum Entanglement and The Great Bohr Einstein Debate: 🤍 Pilot Wave Theory and Quantum Realism: 🤍 What If we Live In a Superdeterministic Universe: 🤍 Sign up for the mailing list to get episode notifications and hear special announcements! 🤍 Search the Entire Space Time Library Here: 🤍 Hosted by Matt O'Dowd Written by Fernando Franco Félix & Matt O'Dowd Post Production by Leonardo Scholzer, Yago Ballarini, Pedro Osinski, Caique Oliveira, Adriano Leal & Stephanie Faria Directed by Andrew Kornhaber Associate Producer: Bahar Gholipour Executive Producers: Eric Brown & Andrew Kornhaber Executive in Charge for PBS: Maribel Lopez Director of Programming for PBS: Gabrielle Ewing Assistant Director of Programming for PBS: John Campbell Spacetime is produced by Kornhaber Brown for PBS Digital Studios. This program is produced by Kornhaber Brown, which is solely responsible for its content. © 2022 PBS. All rights reserved. End Credits Music by J.R.S. Schattenberg: 🤍 Special Thanks to Our Patreon Supporters Big Bang Supporters Devin Wiley Ankur Anand Ryan Salsamendi Steffen Bendel Gautam Shine NullBlox.ZachryWilsn Adam Hillier Bryce Fort Peter Barrett David Neumann Leo Koguan Alexander Tamas Morgan Hough Amy Hickman Juan Benet Vinnie Falco Fabrice Eap Mark Rosenthal David Nicklas Quasar Supporters Vivaan Vaka Glenn hEADcRASH Sugden Sujasha Gupta Vaka Vikram Vaka Alex Kern Ethan Cohen Stephen Wilcox Christina Oegren Mike Conroy Mark Heising Hank S Hypernova Supporters Ryan Moser David Giltinan Ivari Tölp Vyce Ailour Brandon Paddock Oneamazinguy Ken S Gregory Forfa Kirk Honour Mark Evans drollere Joe Moreira Marc Armstrong Scott Gorlick Paul Stehr-Green Russell Pope Ben Delo Scott Gray Антон Кочков John R. Slavik Mathew Donal Botkin John Pollock Edmund Fokschaner Joseph Salomone chuck zegar Jordan Young John Hofmann Daniel Muzquiz Gamma Ray Burst Supporters Walter Montalvo Andrea Galvagni Larka Jerry Thomas Nikhil Sharma Alexander Gruber Jonathan Cordovano John Anderson Scott Hannum Paul Widden Bradley Ulis Craig Falls Kane Holbrook John Yaraee Ross Story teng guo Mason Dillon Harsh Khandhadia Thomas Tarler bsgbryan Sean McCaul Susan Albee Frank Walker Matt Q MHL SHS Terje Vold James Trimmier Anatoliy Nagornyy comboy Andre Stechert Paul Wood Kent Durham jim bartosh Nubble Ramon Nogueira The Mad Mechanic Ellis Hall John H. Austin, Jr. Diana S Faraz Khan Almog Cohen Alex Edwards Ádám Kettinger MD3 Endre Pech Daniel Jennings Cameron Sampson Geoffrey Clarion Russ Creech Jeremy Reed Eric Webster David Johnston Web Browser Michael Barton Mr T Andrew Mann Isaac Suttell Devon Rosenthal Oliver Flanagan Bleys Goodson Robert Walter Bruce B Mirik Gogri Mark Delagasse Mark Daniel Cohen Nickolas Andrew Freeman Shane Calimlim Tybie Fitzhugh Robert Ilardi Eric Kiebler Craig Stonaha Graydon Goss Frederic Simon Tonyface John Robinson Jim Hudson A G David Neal justahat John Funai Tristan Bradley Jenkins Daniel Stříbrný Luaan Cody Thomas Dougherty King Zeckendorff Dan Warren Patrick Sutton John Griffith Daniel Lyons DFaulk Kevin Warne
In his 1915 General Theory of Relativity, Albert Einstein defined gravity as the bending of space and time. This was the prevailing idea of gravity for the following century. But now, a new theory has been proposed that could change everything we know about gravity. The Digital Gravity Theory proposes that gravity is not a force but rather the product of the topology of space and time. If this new theory is correct, it could mean a complete overhaul of our understanding of physics. So far, it has been met with a lot of skepticism, but the scientists who proposed it are convinced that it is the right answer. Watch, like and comment on New Discovery That Changed Physics! Gravity Is Not a Force!What do you think? Is this new theory correct, or is it just another crackpot idea? Subscribe for more! ► 🤍 Credit: NASA, ESA, ESO, SpaceX, Wikipedia, Shutterstock, ... #TheSimplySpaceEN
Quantum mechanics is the area of physics that deals with the behaviour of atoms and particles on microscopic scales. Since its inception, the many counter-intuitive aspects and results of quantum mechanics have provoked strong philosophical debates and many interpretations. Neil deGrasse Tyson explains quantum physics in a way that is understandable even for the lay person. In Quantum Mechanics there is no such thing as absolute certainty when looking for something. This phenomenon is known as Uncertainty Principle and was Introduced first in 1927 by the German physicist Werner Heisenberg. Heisenberg realized that one implication of quantum physics is that the act of measurement always disturbs the object measured. Neil deGrasse Tyson explains that the whole computer world is based on the principle of Quantum Physics. We are able to manipulate the electrical properties of silicon only because we can study the wave nature of electrons. Our daily routines are often governed by technology that is directly related to Quantum Physics, thus our lives rest upon these fundamental scientific discoveries. Another hard concept to grasp is Quantum entanglement. Einstein referred to it as "spooky action at a distance. It occurs when a pair or group of particles is generated, interact, or share spatial proximity in a way such that the quantum state of each particle of the pair or group cannot be described independently of the state of the others. But Neil deGrasse Tyson and Lawrence Krauss explain this concept with everyday life examples which makes it a little bit easier to understand. As Neil deGrasse Tyson points out, the first quantum phenomena were observed more than a century ago. However scientists are still learning about this realm of our universe. #neiltyson #quantumphysics #science SUBSCRIBE to our channel "Science Time": 🤍 SUPPORT us on Patreon: 🤍 BUY Science Time Merch: 🤍 Sources: House Science & National Labs Caucus: Neil deGrasse Tyson 🤍 Accessed 01.03.2021 Lawrence Krauss - Connoway Hall - 🤍 Accessed 12.03.2021 In the Blink of Bird’s Eye, a Model for Quantum Navigation 🤍 retrieved 10.03.2021 Satellite-to-ground quantum-limited communication using a 50-kg-class microsatellite 🤍 Accessed 11.03.2021 NASA's Cold Atom Lab Takes One Giant Leap for Quantum Science 🤍 Accessed 09.03.2021 NASA’s Cold Atom Lab: The Coolest Experiment in the Universe 🤍 Accessed 02.03.2021 Why do quantum effects only happen on the atomic scale? 🤍 retrieved 01.03.2021 Neil deGrasse Tyson JRE #919 🤍 retrieved 26.02.2017
2021 saw great discoveries and achievements in physics, astronomy, and space exploration. In this video, we have discussed the five most exciting discoveries and achievements of 2022 in physics and astronomy. Besides the discoveries covered in the video, other notable ones include Alcyoneus (the biggest radio galaxy), Nadir Crater, the brightest gamma-ray burst, new insights into how the Moon formed, a tidal disruption event visible in optical wavelengths, the closest black hole to Earth (Gaia BH1), Fornax cluster anomalies, and the farthest confirmed galaxy HD1. Basics of Astrophysics series: 🤍 Links to Research Papers: Earendel: JWST Research Paper: 🤍 Hubble Research Paper: 🤍 Pluto: 🤍 Webb Galaxies: GLz-13 Research Paper: 🤍 Schrodinger's Galaxy Research Paper: 🤍 Wormholes: 🤍 Black Hole: 🤍 Created by: Rishabh Nakra, Simran Buttar, and Shreejaya Karantha Narrated by: Jeffrey Smith
20 Times Volleyball Players Broke the Laws of Physics !!! Check out these crazy volleyball spikes and even more crazy vertical jumps! Some of these vertical jumps really broke the laws of physics. Enjoy this video :) Like, Share, Subscribe For More Volleyball content * 🔔 Don't Forget to Hit the Bell Icon 🔔 * All Credits by FIVB: Volleyball TV: 🤍 - Watch ALL the Volleyball Action 🤍 - Subscribe NOW 🤍 - News, Schedules, Results & more: 🤍 FOLLOW VOLLEYBALL WORLD ON SOCIAL MEDIA Instagram: 🤍 Facebook: 🤍 Twitter: 🤍 More info: 🤍
Anton Zeilinger delivered his Nobel Prize lecture "A Voyage through Quantum Wonderland" on 8 December 2022. The Nobel Prize in Physics 2022 was awarded jointly to Alain Aspect, John F. Clauser and Anton Zeilinger "for experiments with entangled photons, establishing the violation of Bell inequalities and pioneering quantum information science".
Professor Jim Al-Khalili traces the story of arguably the most important, accurate and yet perplexing scientific theory ever: quantum physics. The story of quantum physics starts at the beginning of the 20th century with scientists trying to better understand how light bulbs work. This simple question soon led scientists deep into the hidden workings of matter, into the sub-atomic building blocks of the world around us. Here they discovered phenomena unlike any encountered before - a realm where things can be in many places at once, where chance and probability call the shots and where reality appears to only truly exist when we observe it. - Subscribe to Spark for more amazing science, tech & engineering videos: 🤍 🚀 Join the Spark Channel Membership to get access to perks: 🤍 Find us on: Facebook: 🤍 Instagram: 🤍 Any queries, please contact us at: owned-enquiries🤍littledotstudios.com #Spark #physics
Everything we know about physics - and a few things we don't - in a simple map. #physics #DomainOfScience If you are interested in buying a print you can buy it as a poster here: North America: 🤍 Everywhere else: 🤍 French version: 🤍 Spanish Version: 🤍 Or on a load of other objects: 🤍 Also you can download a digital version here: 🤍 I made the music, which you can find on my Soundcloud if you'd like to get lost in some cosmic jam. 🤍 Errata and clarifications. I endeavour to be as accurate as possible in my videos, but I am human and definitely don’t know everything, so there are sometimes mistakes. Also, due to the nature of my videos, there are bound to be oversimplifications. Some of these are intentional because I don’t have time to go into full detail, but sometimes they are unintentional and here is where I clear them up. 1. “Isaac Newton invented calculus.” Actually there is controversy over who invented calculus first Isaac Newton or Gottfried Leibniz. Regardless of who it was I have used Leibniz’s mathematical notation here and so he definitely deserves credit. I did’t know about all this so thanks to those who pointed it out. 🤍 2. “Maxwell derived the laws of electromagnetism.” This is a simplification as Maxwell’s work was built on the backs of other scientists like Hans Christian Ørsted, André-Marie Ampère and Michael Faraday who discovered induction and saw that electricity and magnetism were part of the same thing. But it was Maxwell who worked out all the maths and brought electricity and magnetism together into a unified theory. 🤍 3. “Entropy is a measure of order and disorder”. This is also a simplification and this does a good job of explaining it better 🤍 4. Einstein and Quantum physics: I made it sound like quantum physics was built by people other than Einstein, but this couldn’t be further from the truth. Einstein got a Nobel prize for his work on the photoelectric effect which was a key result to show the particle-like nature of light. Funnily enough he never got a nobel prize for his work on Relativity! Also, if you enjoyed this video, you will probably like my science books, available in all good books shops around the work and is printed in 16 languages. Links are below or just search for Professor Astro Cat. They are fun children's books aimed at the age range 7-12. But they are also a hit with adults who want good explanations of science. The books have won awards and the app won a Webby. Frontiers of Space: 🤍 Atomic Adventure: 🤍 Intergalactic Activity Book: 🤍 Solar System App: 🤍 Find me on twitter, instagram, and my website: 🤍 🤍 🤍 🤍
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Casey Armstrong has defied the odds of many young care leavers - but her journey through foster care, being forced from a home she loved, came at a huge personal cost. It was her love of physics and science which inspired her to pull herself out of a life plagued by drink and drugs and to finally find a ‘normal life’ at university studying her favourite subject. [Subscribe: 🤍 Children in care are far less likely to achieve good GCSEs or go to university. A quarter of the prison population has been in care. The author of a landmark report into children's social care in England has told this programme the government must commit to radical reform of the whole system - a system failing some of the most vulnerable children in care. The review's recommendations will cost an extra £2.6 billion pounds over the next four years. We also speak to Josh MacAlister, chair of The Independent Care Review - he's put forward a raft of recommendations to overhaul a system few argue is working. A Department for Education spokesperson told us: "Every child deserves the security of a safe and loving home" and said the government will shortly publish what they described as ambitious reform plans for children's social care." - Watch more of our explainer series here - 🤍 Get more news at our site - 🤍 Follow us: Facebook - 🤍 Twitter - 🤍
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Theoretical physicist Sean Carroll, PhD, is challenged to explain the concept of dimensions to 5 different people; a child, a teen, a college student, a grad student, and an expert. Still haven’t subscribed to WIRED on YouTube? ►► 🤍 Get more incredible stories on science and tech with our daily newsletter: 🤍 Also, check out the free WIRED channel on Roku, Apple TV, Amazon Fire TV, and Android TV. Here you can find your favorite WIRED shows and new episodes of our latest hit series Tradecraft. ABOUT WIRED WIRED is where tomorrow is realized. Through thought-provoking stories and videos, WIRED explores the future of business, innovation, and culture. Physicist Explains Dimensions in 5 Levels of Difficulty | WIRED
Visit 🤍 to sign up for free. And also, the first 200 people will get 20% off their annual premium membership. BACKGROUND VIDEOS: Basics of QFT: 🤍 Quantum Gravity: 🤍 Basics of Quantum Mechanics: 🤍 QM model of the Atom: 🤍 Quantum Chromodynamics (QCD): 🤍 CHAPTERS: 0:00 - Historical perspective of modern physics 1:50 - The advent of Quantum Mechanics 5:00 - The problems with quantum mechanics 6:52 - What is Quantum Field Theory? 9:25 - How QFT explains force mediation and decay 10:53 - How QFT is also incomplete 11:44 - The most beautiful theory in the universe! 12:41 - Further study with Brilliant SUMMARY: Quantum field theory or QFT is the basis of the best theory we have in physics today to explain nearly everything, called the Standard Model of particle physics. What is Quantum Field theory? Why is it necessary? How is it different than quantum mechanics? Classical mechanics indicates that an orbiting electron creates electromagnetic radiation which means that it would constantly lose energy, and fall to the nucleus. This does not happen. Quantum Mechanics solved this problem by showing that electrons travel in quantized orbits at their lowest energy state, and that they do not orbit but exist as a clould around the nucleus. In quantum mechanics, objects are wavefunctions described by the Schrodinger equation. The location of a particle is unknown until the moment of measurement. We cannot know where it is beforehand, only the probability of finding it at any specific location. This is a great model but it also has some problems. First of all, quantum mechanics is not relativistic. It will give you the wrong result if the quantum object is moving close the speed of light. The practical result of this is that as it doesn’t incorporate a speed limit, the speed of light, needed to make causality work. It allows for two measurements to influence each other faster than light. This would mean that there would be some reference frame in which the future could influence the past, breaking causality. A second problem with quantum mechanics is that it only tells you how a particle evolves over time. It does not tell you how it is created or annihilated. So it can’t account for things like beta decay, due to the weak nuclear force, where a neutron transforms into a proton, an electron and an antineutrino. This is where quantum field theory explains things that quantum mechanics cannot explain on its own. So what is quantum field theory? QFT a mathematical framework that combines classical field theory, special relativity, and quantum mechanics There is a field for every particle of the standard model. All of these fields extend out in all of spacetime. The fields are always there and exist everywhere including inside your body. Although they exist everywhere and you can’t see them, they are not nothing. They are teeming with virtual particles. These are particle-antiparticle pairs that get created and destroyed constantly. We can visualize these fields as a kind of ocean. Just like the ocean always has some turbulence, the fields always have a kind of turbulence even in their ground state of minimal energy. This turbulence is due to virtual particle creation and annihilation. In these turbulent seas, if there is enough energy, a larger wave can be created which CAN be measured. These are the real particles. Energy can be transferred between two fields via a mediating boson field. This is considered an interaction or a force. Matter particles can’t interact on their own without a mediating boson. So while in quantum mechanics there is no way for the neutron to split its energy into 3 different particles – a proton, electron and antineutrino, in quantum field theory this can be done via energy exchange between the fields. Although the number of particles may change, the total energy is always conserved. In other words, the energy of the fields is the same before and after the energy exchange. So by having quantum fields we can mathematically account for and model creation and annihilation of particles, as well as the mechanism of force exchange. #quantumfieldtheory #QFT The icing on the cake is that the theory is fully relativistic, and free of causality violations. But even this modification of quantum mechanics is not perfect. For example, QFT is still missing gravity. We do not have a quantum field theory for gravity. So even QFT which is extremely accurate for the forces and particles we know of in the standard model, remains as yet incomplete.
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When Tesla unveiled their Semi 5 years ago, auto industry was skeptical to say the least. As Daimler put it, Tesla must be defying the laws of physics. In this video we'll look at how the Tesla Semi "Broke the Laws of Physics" Patreon: 🤍 Paypal: 🤍 Bitcoin: 3B3UXCZsnoPZxG6vYQ6npsF4TW8f5kK4LH Teespring: 🤍 Reddit: 🤍 Twitter: 🤍 *Timeline* 00:00 Intro 01:09 Drag Coefficient 02:05 Powertrain 03:31 Tesla’s 20% Advantage 04:36 The Plaid Motor 06:56 The Limiting Factor for Regen 10:53 1000 Volt Triangle 11:49 Summary Intro Music by Dyalla: Homer Said
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This physics introduction - basic review video tutorial covers a few topics such as unit conversion / metric system, kinematics, vectors, forces, momentum, circular motion, projectile motion, work, kinetic energy, potential energy and rotational motion. This video contains plenty of examples and practice problems. My E-Book: 🤍 Video Playlists: 🤍 Homework Help: 🤍 Ten Side Hustles For College Students 🤍 Subscribe: 🤍 Support & Donations: 🤍 Youtube Membership: 🤍 Here is a list of topics: 1. Physics Introduction - Basic Overview 2. Metric System Review - Unit Conversion / Dimensional Analysis Problems 3. Kinematics in one Dimension 4. Distance vs Displacement Concept 5. Average Speed Formula and Average Velocity Equation 6. Speed, Velocity and Acceleration Definition 7. Kinematics Problems 8. Adding and Subtracting Two or Three Vectors 9. Vector Components, Resultant Vector, and Angle 10. Parallel and Perpendicular Vectors 11. Newton's First Law of Motion - Inertia & Rest 12. Newton's Second Law of Motion - Force, Mass, and Acceleration 13. Newton's Third Law of Motion - Action and Reaction Pairs 14. Normal Force Calculation 15. Normal Force on an Incline Plane 16. Static Friction and Kinetic Friction 17. Tension Force in a Rope 18. Mass vs Weight Force on Earth and Moon 19. Circular Motion Equations and Formulas 20. Centripetal Acceleration 21. Centripetal Force and Gravitation 22. Velocity of an Orbiting Satelite 23. Static Friction and Car Rounding Curve 24. Tension Force, Horizontal & Vertical Circle - Centripetal Force 25. Net Force Practice Problems 26. Constant Speed and Acceleration Kinematic Formulas 27. Projectile Motion Problems - Kinematics in 2 Dimensions 28. Maximum Height and Range Formulas 29. Horizontal Velocity vs Vertical Velocity Components 30. Scalar vs Vector Quantities - Magnitude and Direction 31. Free Fall and Projectile Definition 32. Initial Speed, Time, Height and Range Calculations 33. Work Energy Theorem 34. Kinetic Energy, Gravitational Potential Energy and Mechanical Energy 35. Conservative and Nonconservative Forces 36. Work, Force, and Distance Formula 37. Conservation of Energy Practice Problem - Height and Speed 38. Momentum - Mass and Velocity - Mass in Motion 38a. Impulse, Force, and Time 38b. Impulse Momentum Theorem 39. Inelastic Collisions and Elastic Collisions 40. Conservation of Momentum and Kinetic Energy Formulas 41. Rotational Motion 42. Linear Translational Speed vs Rotational Angular Speed 43. Angular Acceleration and Angular Displacement 44. Force vs Torque 45. Rotational Work and Inertia 46. Linear Momentum vs Angular Momentum 47. Revolutions, Rotations, Radians and Degrees Disclaimer: Some of the links associated with this video may generate affiliate commissions on my behalf. As an amazon associate, I earn from qualifying purchases that you may make through such affiliate links.
Dr. Michio Kaku, a professor of theoretical physics, answers the internet's burning questions about physics. Can Michio explain "string theory" to the layperson? What is a quark? What is the "God Equation"? How do black holes distort time? Is the best physicist ever Albert Einstein or Richard Feynman? Or someone else? Michio answers all these questions and much more! Still haven’t subscribed to WIRED on YouTube? ►► 🤍 Listen to the Get WIRED podcast ►► 🤍 Want more WIRED? Get the magazine ►► 🤍 Get more incredible stories on science and tech with our daily newsletter: 🤍 Also, check out the free WIRED channel on Roku, Apple TV, Amazon Fire TV, and Android TV. Here you can find your favorite WIRED shows and new episodes of our latest hit series Tradecraft. ABOUT WIRED WIRED is where tomorrow is realized. Through thought-provoking stories and videos, WIRED explores the future of business, innovation, and culture. Dr. Michio Kaku Answers Physics Questions From Twitter | Tech Support | WIRED
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Hi Everyone :) Welcome back! I get asked often: "Where did you get all this stuff?" My goal is to share the real magic of science and physics- and to this end I will update here (and in my store) suggestions on where to get some of these toys, kinetic art pieces, and scientific curiosities for yourself. Purchasing items from the links on these pages will help support my IG page of science and wonder. Buy physicsfun toys on : 🤍 (Official websit 🇺🇸) physicsfun toys on amazon : 🤍 Follow on Instagram : 🤍physicsfun This video contains : 👉🏻 Viewing a Corner Cube Prism: what one sees when looking in to a retro-reflector prism 👁. A light ray entering a mirrored corner cube prism always exits along a parallel path- but how would a camera capture this experience? Did I fool you? 👉🏻 Nimbus 2000: physics wizardry (via a 2D magnetic trap) creates the illusion of Harry Potter magic. This broomstick won’t fly, but will remain levitated due to a careful arrangement of permanent magnets in the base and bristles. 👉🏻 Hexagonal Lens Array: glass diffuser with hexagonal grid of lenses produces interesting pixelation and aliasing effects. Moving lines and patterns appear on the array as it slides across the square grid lines . 👉🏻 Aurora Laser Projector: red, green, and blue laser elements are refracted through a rotating optical element with lumpy surface features which create this amazing aurora/nebula effect. 👉🏻 Ferrofluid Magician: whimsical and wonderful physics toy from Taiwan. With a magnet in his hat (and a dove on his head) this little conjurer embodies our tag line here on 🤍physicsfun: "physics describes the real magic of the universe"! 👉🏻 Steinbach Reflection Symmetry Sculpture: precision etched into only one corner of a triangular prism, multiple reflections within the optical grade glass create the 3D lighthouse with hexagonal cross section. 👉🏻 Trichroic Beam Splitter: this cube of four prisms with dichroic optical coatings allows a beam of white light to be separated into red, green, and blue. 👉🏻 Hoptimist Desk Toy: this jovial little guy displays damped harmonic motion- mostly up and down with a slight coupling to horizontal motion- such that his eyes and nose trace out ellipses. 👉🏻 Reflection Symmetry Sculpture: precision etched into one side of a triangular prism, multiple reflections within the optical grade glass create the 3D castle and grounds. Fun use of symmetry and geometry in this optical crystal sculpture series by Steinbach. 👉🏻 Benton Hologram: also called a rainbow hologram which are often embossed on paper thin foil like this promotional image from the 1970s. 👉🏻 WindGyro: Spin this top up with a puff of air! Small magnets keep the top secured to the base so that a stream of air will induce rotation as the air flows through the engineered turbine blades of the elegant spiral structure. 👉🏻 Gyroscopically Stabilized Rail Runner: this toy remains upright on a single wheel as it travels along any thin rail or tightrope. 👉🏻 Monorail Top: gyroscope stabilized and powered vehicle rides a thin ribbon of metal on a single brass wheel. 👉🏻 BONUS CLIP - Caustic Projections from 3D Printed Optics 👉🏻 Solution to previous quiz 👉🏻 Physics Brain Teaser 👉🏻 Randomly selected comment Background music by : YouTube Audio Library 1) Cosmic Drift - DivKid 2) Bonfire - An Jone 3) Icelandic Arpeggios - DivKid 4) Sunset n Beachz - Ofshane 5) New Day - Patrick Patrikios 6) Interstellar Mood - Nico Staf