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Physics and Our Universe: How It All Works

Where to Watch Physics and Our Universe: How It All Works

60
Humble Physics: What We Don't Know
2011-09-30
Having covered the remarkable discoveries in physics, turn to the great gap in our current knowledge, namely the nature of the dark matter and dark energy that constitute more than 95% of the universe. Close with a look at other mysteries that physicists are now working to solve.

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59
An Evolving Universe
2011-09-30
Trace the discoveries that led astronomers to conclude that the universe began some 14 billion years ago in a big bang. Detailed measurements of the cosmic microwave background and other observations point to an initial period of tremendous inflation, followed by slow expansion and an as-yet inexplicable accelerating phase.

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58
The Particle Zoo
2011-09-30
By 1960 a myriad of seeming elementary particles had been discovered. Survey the standard model that restored order to this subatomic chaos, describing a universe whose fundamental particles include six quarks; the electron and two heavier cousins; elusive neutrinos; and force-carrying particles such as the photon.

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57
Energy from the Nucleus
2011-09-30
Investigate nuclear fission, in which a heavy, unstable nucleus breaks apart; and nuclear fusion, where light nuclei are joined. In both, the released energy is millions of times greater than the energy from chemical reactions and comes from the conversion of nuclear binding energy to kinetic energy.

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56
The Atomic Nucleus
2011-09-30
In the first of two lectures on nuclear physics, study the atomic nucleus, which consists of positively charged protons and electrically neutral neutrons, held together by the strong nuclear force. Many combinations of protons and neutrons are unstable; such nuclei are radioactive and decay with characteristic half lives.

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55
Molecules and Solids
2011-09-30
See how atoms join to make molecules and solids, and how this leads to the quantum effects that underlie semiconductor electronics. Also probe the behavior of matter in ultradense white dwarfs and neutron stars, and learn how a quantum-mechanical pairing of electrons at low temperatures produces superconductivity.

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54
Atoms
2011-09-30
Drawing on what you now know about quantum mechanics, analyze how atoms work, discovering that the electron is not a point particle but behaves like a probability cloud. Investigate the exclusion principle, and learn how quantum mechanics explains the periodic table of elements and the principle behind lasers.

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53
Quantum Mechanics
2011-09-30
In 1926 Erwin Schrödinger developed an equation that underlies much of our modern quantum-mechanical description of physical reality. Solve a simple problem with the Schrödinger equation.

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52
Wave or Particle?
2011-09-30
In the 1920s physicists established that light and matter display both wave- and particle-like behavior. Probe the nature of this apparent contradiction and the meaning of Werner Heisenberg's famous uncertainty principle, which introduces a fundamental indeterminacy into physics.

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51
Atomic Quandaries
2011-09-30
Apply what you've learned so far to work out the details of Niels Bohr's model of the atom, which patches one of the cracks in classical physics from Lecture 44. Although it explains the energies of photons emitted by simple atoms, Bohr's model has serious limitations.

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50
Introducing the Quantum
2011-09-30
Begin your study of the ideas that revolutionized physics at the atomic scale: quantum theory. The word quantum comes from Max Planck's proposal in 1900 that the atomic vibrations that produce light must be quantized: that is, they occur only with certain discrete energies.

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49
General Relativity
2011-09-30
Special relativity is limited to reference frames in uniform motion. Following Einstein, make the leap to a more general theory that encompasses accelerated frames of reference and necessarily includes gravity.

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48
Space-Time and Mass-Energy
2011-09-30
In relativity theory, contrary to popular views, reality is what's not relative: that is, what doesn't depend on one's frame of reference. See how space and time constitute one such pair, merging into a four-dimensional space-time.

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47
Time and Space
2011-09-30
Einstein's special theory of relativity upends traditional notions of space and time. Solve the simple formulas that show the reality of time dilation and length contraction.

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46
Special Relativity
2011-09-30
Discover the startling consequences of Einstein's principle of relativity: that the laws of physics are the same for all observers in uniform motion. One result is that the speed of light is the same for all observers, no matter what their relative motion: an idea that overturns the concept of simultaneity.

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45
Earth, Ether, Light
2011-09-30
Review the famous Michelson-Morley experiment, which was designed to detect the motion of Earth relative to a conjectured ether wind that supposedly pervaded all of space. The failure to detect any such motion revealed a deep-seated contradiction at the heart of physics.

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44
Cracks in the Classical Picture
2011-09-30
Embark on the final section of the course, which covers the revolutionary theories that superseded classical physics. Why did classical physics need to be replaced?

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43
Wave Optics
2011-09-30
Returning to themes from Lecture 18 on waves, discover that when light interacts with objects comparable in size to its wavelength, then its wave nature becomes obvious. Examine interference and diffraction, and see how these effects open the door to certain investigations, while hindering others.

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42
Imaging
2011-09-30
See how curving a mirror or a piece of glass bends parallel light rays to a focal point, allowing formation of images. Learn how images can be enlarged or reduced, and the difference between virtual and real images.

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41
Reflection and Refraction
2011-09-30
Starting a new section of the course, discover that light often behaves as rays, which change direction at boundaries between materials. Investigate reflection and refraction, answering such questions as, why doesn't a dust mote block data on a CD?

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40
Electromagnetic Waves
2011-09-30
Explore the remarkable insight of physicist James Clerk Maxwell in the 1860s that changing electric fields give rise to magnetic fields in the same way that changing magnetic fields produce electric fields. Together, these changing fields result in electromagnetic waves, one component of which is visible light.

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39
AC/DC
2011-09-30
Direct current (DC) is electric current that flows in one direction; alternating current (AC) flows back and forth. Learn how capacitors and inductors respond to AC by alternately storing and releasing energy.

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38
Magnetic Energy
2011-09-30
Study the phenomenon of self-inductance in a solenoid coil, finding that the magnetic field within the coil is a repository of magnetic energy, analogous to the electric energy stored in a capacitor. Close by comparing the complementary aspects of electricity and magnetism.

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37
Applications of Electromagnetic Induction
2011-09-30
Survey some of the technologies that exploit electromagnetic induction: the electric generators that supply nearly all the world's electrical energy, transformers that step voltage up or down for different uses, airport metal detectors, microphones, electric guitars, and induction stovetops, among many other applications.

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36
Electromagnetic Induction
2011-09-30
Probe one of the most fascinating phenomena in all of physics, electromagnetic induction, which shows the direct relationship between electric and magnetic fields. In a demonstration with moving magnets, see how the relative motion of a magnet and an electric conductor induces current in the conductor.

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35
The Origin of Magnetism
2011-09-30
No matter how many times you break a magnet apart, each piece has a north and south pole. Why? Search for the origin of magnetism and learn how magnetic field lines differ from those of an electric field, and why Earth has a magnetic field.

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34
Magnetism
2011-09-30
In this introduction to magnetism, discover that magnetic phenomena are really about electricity, since magnetism involves moving electric charge. Learn the right-hand rule for the direction of magnetic force.

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33
Electric Circuits
2011-09-30
All electric circuits need an energy source, such as a battery. Learn what happens inside a battery, and analyze simple circuits in series and in parallel, involving one or more resistors.

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32
Electric Current
2011-09-30
All electric circuits need an energy source, such as a battery. Learn what happens inside a battery, and analyze simple circuits in series and in parallel, involving one or more resistors.

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31
Electric Energy
2011-09-30
Study stored electric potential energy in fuels such as gasoline, where the molecular bonds represent an enormous amount of energy ready to be released. Also look at a ubiquitous electronic component called the capacitor, which stores an electric charge, and discover that all electric fields represent stored energy.

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30
Electric Potential
2011-09-30
Jolt your understanding of electric potential difference, or voltage. A volt is one joule of work or energy per coulomb of charge.

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29
The Electric Field
2011-09-30
On of the most important ideas in physics is the field, which maps the presence and magnitude of a force at different points in space. Explore the concept of the electric field, and learn how Gauss's law describes the field lines emerging from an enclosed charge.

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28
A Charged World
2011-09-30
Embark on a new section of the course, devoted to electromagnetism. Begin by investigating electric charge, which is a fundamental property of matter.

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27
Consequences of the Second Law
2011-09-30
The second law puts limits on the efficiency of heat engines and shows that humankind's energy use could be better planned. Learn why it makes sense to exploit low-entropy, high-quality energy for uses such as transportation, motors, and electronics, while using high-entropy random thermal energy for heating.

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26
Entropy: The Second Law of Thermodynamics
2011-09-30
Turn to an idea that has been compared to a work of Shakespeare: the second law of thermodynamics. According to the second law, entropy, a measure of disorder, always increases in a closed system.

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25
Heat and Work
2011-09-30
The first law of thermodynamics relates the internal energy of a system to the exchange of heat and mechanical work. Focus on isothermal (constant temperature) and adiabatic (no heat flow) processes, and see how they apply to diesel engines and the atmosphere.

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24
The Ideal Gas
2011-09-30
Delve into the deep link between thermodynamics, which looks at heat on the macroscopic scale, and statistical mechanics, which views it on the molecular level. Your starting point is the ideal gas law, which approximates the behavior of many gases, showing how temperature, pressure, and volume are connected by a simple formula.

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23
Matter and Heat
2011-09-30
Heat flow into a substance usually raises its temperature. But it can have other effects, including thermal expansion and changes between solid, liquid, and gaseous forms: collectively called phase changes.

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22
Heat Transfer
2011-09-30
Analyze heat flow, which involves three important heat-transfer mechanisms: conduction, which results from direct molecular contact; convection, involving the bulk motion of a fluid; and radiation, which transfers energy by electromagnetic waves. Study examples of heat flow in buildings and in the sun's interior.

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21
Heat and Temperature
2011-09-30
Beginning a new section, learn that heat is a flow of energy driven by a temperature difference. Temperature can be measured with various techniques but is most usefully quantified on the Kelvin scale.

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20
Fluid Dynamics
2011-09-30
Explore fluids in motion. Energy conservation requires low pressure where fluid velocity is high, and vice versa.

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19
Fluid Statics: The Tip of the Iceberg
2011-09-30
Fluid is matter in a liquid or gaseous state. In this lecture, study the characteristics of fluids at rest.

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18
Making Waves
2011-09-30
Investigate waves, which transport energy but not matter. When two waves coexist at the same point, they interfere, resulting in useful and surprising applications.

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17
Back and Forth: Oscillatory Motion
2011-09-30
Start a new section in which you apply Newtonian mechanics to more complex motions. In this lecture, study oscillations, a universal phenomenon in systems displaced from equilibrium.

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16
Keeping Still
2011-09-30
What's the safest angle to lean a ladder against a wall to keep the ladder from slipping and falling? This is a problem in static equilibrium, which is the state in which no net force or torque (rotational force) is acting.

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15
Rotational Motion
2011-09-30
Turn your attention to rotational motion. Rotational analogs of acceleration, force, and mass obey a law related to Newton's second law.

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14
Systems of Particles
2011-09-30
How do you analyze a complex system in motion? One special point in the system, called the center of mass, reduces the problem to its simplest form.

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13
Gravity
2011-09-30
Newton realized that the same force that makes an apple fall to the ground also keeps the moon in its orbit around Earth. Explore this force, called gravity, by focusing on circular orbits.

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12
Using Energy Conservation
2011-09-30
A dramatic demonstration with a bowling ball pendulum shows how conservation of energy is a principle you can depend on. Next, solve problems in complicated motion using conservation of energy as a shortcut.

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11
Work and Energy
2011-09-30
See how the precise definition of work leads to the concept of energy. Then explore how some forces give back the work done against them.

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10
Newton's Laws in 2 and 3 Dimensions
2011-09-30
Consider Newton's laws in cases of two and three dimensions. For example, how fast does a rollercoaster have to travel at the top of a loop to keep passengers from falling out?

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9
Action and Reaction
2011-09-30
According to Newton's third law, for every action there is an equal and opposite reaction. Professor Wolfson has a clearer way of expressing this much-misunderstood phrase.

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8
Using Newton's Laws: 1-D motion
2011-09-30
Investigate Newton's second law, which relates force, mass, and acceleration. Focus on gravity, which results in a force, called weight, that's proportional to an object's mass.

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7
Causes of Motion
2011-09-30
For most people, the hardest part of learning physics is to stop thinking like Aristotle, who believed that force causes motion. It doesn't.

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6
Going in Circles
2011-09-30
Circular motion is accelerated motion, even if the speed is constant, because the direction, and hence the velocity, is changing. Analyze cases of uniform and non-uniform circular motion.

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5
It's a 3-D World!
2011-09-30
Add the concept of vector to your physics toolbox. Vectors allow you to specify the magnitude and direction of a quantity such as velocity.

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4
Falling Freely
2011-09-30
Use concepts from the previous lecture to analyze motion when an object is under constant acceleration due to gravity. In principle, the initial conditions in such cases allow the position of the object to be determined for any time in the future, which is the idea behind Isaac Newton's clockwork universe.

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3
Describing Motion
2011-09-30
Motion is everywhere, at all scales. Learn the difference between distance and displacement, and between speed and velocity.

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2
Languages of Physics
2011-09-30
Understanding physics is as much about language as it is about mathematics. Begin by looking at how ordinary terms, such as theory and uncertainty, have a precise meaning in physics.

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1
The Fundamental Science
2011-09-30
Take a quick trip from the subatomic to the galactic realm as an introduction to physics, the science that explains physical reality at all scales. Professor Wolfson shows how physics is the fundamental science that underlies all the natural sciences.

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Physics and Our Universe: How It All Works is an enlightening educational series from The Great Courses. Released in 2011, this show, presented as a series of lectures, seeks to bring the fascinating world of physics to a broad audience. Each episode explores different subjects within the field, gradually building up an intricate tapestry of knowledge about the physical universe and its inherent laws.

The key feature of Physics and Our Universe: How It All Works is its comprehensive approach to the intriguing subject of physics, explained from the ground up. The series is designed to help viewers of all knowledge levels to understand and appreciate the principles that govern the universe, thereby enhancing their appreciation of life and existence.

Hosted by Professor Richard Wolfson, a distinguished physicist and educator from Middlebury College, the series leans heavily on his deep expertise and charismatic teaching style. Wolfson masterfully bridges the gap between common perceptions of physics as a formidable subject and the engaging reality that it has the power to answer some of the most profound questions about our existence.

The series contains 60 episodes spanning various subjects within physics. Each lecture functions as an individual lesson, yet all of them are interconnected, painting a larger picture of the physics that underpins our universe. The interesting topics covered range from elementary particles and quantum mechanics to cosmology and thermodynamics, with an occasional dip into the world of string theory and dark matter.

With each episode, viewers are introduced to the forces, theories, and structures that define our universe, such as Newton's laws of motion, Einstein's theory of relativity, the structure of atoms, the properties of light, or the principle of conservation of energy. Yet, as deeply as the series dives into these complex subjects, the language used is always clear and accessible, ensuring that even the most arcane concepts are completely understandable to the non-scientifically inclined.

The series takes an intriguing approach by linking the theoretical aspects of physics with real-world implications and examples. This show does not relegate physics to the realm of abstract ideas, but demonstrates its relevance to everyday life. You will learn how physics underlies everything from the way you drive your car, through climate change and energy production, to the functioning of the universe.

One of the strengths of Physics and Our Universe: How It All Works is its capacity to stimulate curiosity. Rather than providing a dry, textbook-style explanation, the series presents physics as an ongoing adventure into the unknown, discussing not only what scientists know, but also the mysteries they are still trying to solve.

Visual aids, engaging graphics, and vivid descriptions support the comprehensive walkthrough of physics. Demonstrations, diagrams, and 3D models are in abundant use throughout the series, helping complex ideas and concepts be easily visualized by the viewer. Physics and Our Universe: How It All Works has been lauded for its production quality, illustrative narrative and, of course, its carefully coordinated delivery of elaborate concepts in a manner that respects the intelligence of its audience.

Despite the breadth and depth of the subject matter, Physics and Our Universe: How It All Works maintains a structured flow. It starts with the fundamentals and then gradually proceeds to more complex principles, mirroring a journey from earthly physics to the cosmic mysteries beyond. This organization fosters a building-block understanding, allowing viewers to solidify their grasp of earlier concepts before tackling later ones.

Whether you're a novice with a burgeoning interest in physics or a seasoned veteran looking to refresh your knowledge base, Physics and Our Universe: How It All Works caters to a wide array of audiences. The clear and eloquent explanations provided by Professor Wolfson are a boon for those wanting to venture beyond rudimentary physics without being overwhelmed by the intensity of the topic.

In conclusion, Physics and Our Universe: How It All Works from The Great Courses offers a comprehensive, accessible, and captivating foray into the principles that rule our universe. Its potent blend of education, entertainment, and stimulation ensures it's not just a course for learning, but also a powerful journey into the heart of what makes our universe tick.

Physics and Our Universe: How It All Works is a series categorized as a canceled/ended. Spanning 1 seasons with a total of 60 episodes, the show debuted on 2011. The series has earned a no reviews from both critics and viewers. The IMDb score stands at undefined.

Channel
The Great Courses
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