Matter and Heat

Matter and Heat
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Heat and Temperature
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. Investigate heat capacity and specific heat, and solve problems in heating a house and cooling a nuclear…
Heat Transfer
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.
Heat and Work
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.
Dark Matter and Dark Energy
Episode 11 of Redefining Reality
What happens when the accepted picture of reality is dramatically overthrown? Watch this happen in the late 20th century, when scientists suddenly discovered two completely unexpected phenomena: dark matter and dark energy, which together dwarf the contribution of ordinary matter to the cosmos.
The Nature of Matter - Understanding the Physical World
Discover how the immense variety of matter--stars, mountains, plants, people--is made by a limited number of elements that combine in simple ways. In the engaging lectures of The Nature of Matter, no scientific background is needed to appreciate everyday miracles like a bouncing rubber ball or water's astonishing power to…
Matter, Energy, and Entropy
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Starting with a deck of cards tossed into the air, explore the key concepts of matter, energy, and entropy, which are the building blocks of the physical universe. Study examples of these phenomena, and see how they are demonstrated by the behavior of the airborne cards.
The Nature of Light and Matter
Episode 2 of The Nature of Matter
Trace a scientific revolution that started with a curious observation about light and a seemingly nonsensical explanation. Learn how Max Planck's proposal that energy is related to frequency, and Albert Einstein's application of this principle to light, gave birth to modern physics.
A New Theory of Matter
Episode 3 of The Nature of Matter
Discover how the idea that light comes in discrete packets called "quanta" led to a startling new theory of matter: quantum mechanics. One prediction is that matter, like light, behaves as both a particle and a wave, a property observed in subatomic particles such as electrons.
Ionic versus Covalent Matter
Episode 7 of The Nature of Matter
Embark on an atomic adventure that explains the differences between vitamins and minerals, among other marvels of the chemical realm. Use your background in electron shell structure from Lecture 4 to understand why atoms form ionic and covalent bonds.
Matter in Solution
Episode 10 of The Nature of Matter
Explore the nature of chemical solutions, which can be liquid, solid, or gaseous, and are ubiquitous in daily life. Examples include dental fillings, air, blood, and soft drinks. Study the components of a solution--the solvent and solute--and the principles of what dissolves what.
Mysteries of Modern Physics: Time Series
Time seems to be woven into the very fabric of the universe. But why? In 24 riveting half-hour episodes, Mysteries of Modern Physics: Time shows how a feature of the world that we all experience connects us to the instant of the formation of the universe--and possibly to a multiverse…
Why Time Is a Mystery
Begin your study of the physics of time with these questions: What is a clock? What does it mean to say that "time passes"? What is the "arrow of time"? Then look at the concept of entropy and how it holds the key to the one-way direction of time in…