Catalog Search Results
Publisher
The Great Courses
Pub. Date
2014.
Language
English
Description
Now that the versatility of negative feedback has been demonstrated, adjust the strength of negative feedback in op-amp circuits to build amplifiers with whatever gain you choose. Create an amplifier that sums two or more inputs, see a circuit that converts current to voltage, and explore the design and operation of an op-amp-based light meter.
Publisher
The Great Courses
Pub. Date
2014.
Language
English
Description
Explore peak detectors that "remember" the maximum voltage reached, as well as Schmitt triggers whose output retain their value until the input changes sufficiently to "trigger" a change in the output. Use these concepts to design a practical circuit: an alarm to warn if your freezer's temperature has been above freezing.
Publisher
The Great Courses
Pub. Date
2014.
Language
English
Description
Examine the circuits that enable your devices to "remember" everything from contact information to your browsing history to the keystrokes you type on your computer. Compare random-access memory versus sequential memory as well as volatile and non-volatile memory.
Publisher
The Great Courses
Pub. Date
2020.
Language
English
Description
Among Einstein’s insights was that light comes in discrete packets of energy called photons. Explore the photoelectric effect, which prompted Einstein’s discovery. See a do-it-yourself project that demonstrates the photoelectric effect. Close by surveying applications of the quantum theory of light to phenomena such as lasers, fluorescent dyes, photosynthesis, and vitamin D production in skin.
Publisher
The Great Courses
Pub. Date
2014.
Language
English
Description
Semiconductors make possible the transistors at the heart of electronics, including integrated circuits and computers. Learn how the atomic configuration of semiconductors makes them unique, and how engineers adjust their properties to make two types of semiconductors - P and N. Witness the critical role that PN-junctions play in semiconductor devices.
Publisher
The Great Courses
Pub. Date
2020.
Language
English
Description
Admire the magic of the number nine. An ancient technique called "casting out nines" lets you pick out the missing digit in a bewilderingly long series of operations. Then learn to determine two-digit cube roots and also find the age of a volunteer who has hidden the number in a complicated calculation, all with the help of the number nine.
Publisher
The Great Courses
Pub. Date
2020.
Language
English
Description
Begin the show with card tricks in which mathematics is clearly being used, but the secret is not easy to figure out. Learn the invariant principle: Some qualities stay the same in a deck even though the order of cards is changing. End with what Professor Benjamin calls the "tear-able" trick, being careful to use cards that you don't mind wrecking.
Publisher
The Great Courses
Pub. Date
2022.
Language
English
Description
Discover the properties of insects that distinguish them from mammals and all other animals. They all have exoskeletons for strength and protection, six legs to propel their movements, compound eyes, antennae, and even more attributes in common with one another. But within this framework, their astonishing variability has allowed them to live in almost every ecological niche on the planet.
Publisher
The Great Courses
Pub. Date
2020.
Language
English
Description
Analyze how metals conduct electricity, discovering that, in a sense, electrons “surf” from one metal atom to the next on a quantum mechanical wave. Probe the causes of electrical resistance and why metals can never be perfect conductors. Finally, use the Pauli exclusion principle to understand the optimum distribution of electrons in the different quantum states of metal atoms.
Publisher
The Great Courses
Pub. Date
2020.
Language
English
Description
Today we know of 79 Jovian moons: the spherical Io, Europa, Ganymede, and Callisto, and dozens of other smaller, odd-shaped satellites. Learn why Jupiter’s gravitational forces, plus the orbital resonance of the three interior moons, make these some of the most promising places to search for life, and why scientists believe the Jovian system once included generations of other moons, now gone.
Publisher
The Great Courses
Pub. Date
2020.
Language
English
Description
Professor Benjamin shows how to play cards like someone who would be thrown out of a casino. Learn the Jonah principle for always winning at poker. Get a "feel" for counting cards and develop the knack for telepathically communicating a hidden card to an assistant. Finally, who could claim to be a card shark without a trick that turns up four aces every time?
Publisher
The Great Courses
Pub. Date
2020.
Language
English
Description
Watch what happens when electrons are put into wave forms that differ from standing waves. Your goal is to understand why some of these superposition states are unstable. Professor Carlson notes that the sloshing of an electron back and forth in an unstable state causes it to act like an antenna, radiating away energy until it falls to a lower energy level.
Publisher
The Great Courses
Pub. Date
2020.
Language
English
Description
Review the major theories proposed by physicists trying to make sense of the paradoxes of the quantum world. Look at the Copenhagen interpretation, Einstein’s realist view, the many worlds interpretation, quantum Bayesianism, non-local hidden variables, and other creative attempts to explain what is going on in a realm that seems to be governed by probability alone.
Publisher
The Great Courses
Pub. Date
2022.
Language
English
Description
Although we tend to think of rats and mice as lab animals, insects—particularly the fruit fly—have played critical roles in research. Explore the many discoveries made in the field of genetics using fruit flies, as well as the fascinating opportunity to watch natural selection in action thanks to the peppered moth and smoke from the Industrial Revolution.
Publisher
The Great Courses
Pub. Date
2020.
Language
English
Description
Hone your psychic powers by developing tricks. Have someone scramble their birthday in a seemingly unbreakable code, which you decipher with ease. Calculate the hidden spots on a stack of dice. Use the parity principle to guess where your partner has landed in an alphabetic array. Also learn the magician's "toxic" calculation principle.
Publisher
The Great Courses
Pub. Date
2014.
Language
English
Description
Understand the math behind two basic rules that allow op-amps to leverage the magic of negative feedback: no current flows into op-amp inputs, and with negative feedback, V+ = V -. See how these rules allow op-amps to tame near-infinite gain in a circuit down to the exact amplification you want.
Publisher
The Great Courses
Pub. Date
2020.
Language
English
Description
Study the most celebrated challenge to the Copenhagen interpretation of quantum mechanics: the paradox proposed by Albert Einstein and his collaborators Boris Podolsky and Nathan Rosen (and later updated by David Bohm). Is quantum mechanics an incomplete theory due to hidden variables that guide the outcome of quantum interactions? Examine this idea and the experiments designed to test it.
Publisher
The Great Courses
Pub. Date
2020.
Language
English
Description
What accounts for the dramatic difference between diamond and graphene (a sheet of graphite one atom thick), both of which are composed of pure carbon? Study the role of electrons in molecular bonds, applying your knowledge of electron standing waves. In carbon, such waves make possible several types of bonds, which in diamond and graphene result in remarkably different physical properties.
80) Why Insects Matter: Earth's Most Essential Species: Episode 6,Pollinators We Cannot Live Without
Publisher
The Great Courses
Pub. Date
2022.
Language
English
Description
Insect pollinators contribute about {dollar}195 billion to the global economy, pollinating approximately 80% of the most important crops worldwide. Explore the complexities of these insects, the many types of pollination they perform, and the coevolutionary dance that continues today between these animals and their plants.
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