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Episodes
- S1 E1 - Four Miracles of Electrical EngineeringApril 19, 202333minDiscover the four revolutions in electrical engineering that have brought major opportunities and benefits to masses of people in just the past 150 years. Learn, specifically, what each of the four periods brought and the basic properties of the electron and electric circuits on which our entire electrified world is based.Free trial of The Great Courses Signature Collection or buy
- S1 E2 - Static Electricity and DC versus ACApril 19, 202333minFrom the moment your phone alarm wakes you in the morning until you turn off the lights at night, almost everything you do—cooking, working, driving, checking the news—is possible because of one simple fact: electrons carry energy. Consider the two ways electrons use their energy-carrying ability to create electricity.Free trial of The Great Courses Signature Collection or buy
- S1 E3 - Making Electricity: Power GenerationApril 19, 202326minHow do we create the massive amounts of energy needed to power our cities and individual homes? We don’t. Energy can neither be created nor destroyed, only converted from one form to another. Learn how electrical engineers use Maxwell’s foundational equations—via four revealing demonstrations—to create generators to power our grids.Free trial of The Great Courses Signature Collection or buy
- S1 E4 - Current on the Move: The Electric GridApril 19, 202332minNo matter what source is used to generate electricity, that power must be distributed and managed to provide continuous and reliable energy for the end user. Explore the US power grid—much of which has been in place for more than 50 years—and discover the significant benefits a “smart grid” would bring.Free trial of The Great Courses Signature Collection or buy
- S1 E5 - First Connections: The Telephone NetworkApril 19, 202329minIn the 1870s, Alexander Graham Bell was trying to improve the telegraph when he and his assistant discovered that speech itself could be transmitted over telegraph wires. Explore the subsequent engineering developments that brought the telephone to almost all households, including Bell’s invention of twisted-pair cabling to reduce crosstalk, still in use today.Free trial of The Great Courses Signature Collection or buy
- S1 E6 - The Digital Revolution in TelecommunicationsApril 19, 202330minIn the old-style analog telephone system, voltage increased and decreased across the wires, corresponding to the human voice signal. But in a digital system, that all changes. Learn how the human voice is changed into binary values, sent over the system, and then converted back into volts with the voltage applied to the speaker in the phone handset. The human ear takes it from there.Free trial of The Great Courses Signature Collection or buy
- S1 E7 - Radio and Television TransmissionApril 19, 202333minIn the 1880s, Heinrich Hertz proved that the high-frequency phenomena of light and heat are also electromagnetic waves and Nikola Tesla invented the “Tesla coil” which served as the basis for the radio oscillator. A few years later, radio signals were sent and received across the Atlantic Ocean. Examine the developments that led to the television monitor and then the emergence of digital TV.Free trial of The Great Courses Signature Collection or buy
- S1 E8 - Space Communications and SatellitesApril 19, 202332minWhen the Soviet Union launched Sputnik I in 1957, the space race was on. A US satellite was launched 14 months later and it demonstrated the feasibility of two-way satellite communications. Since then, electronic communications have become part of our daily lives. Follow the fascinating story that has led to the need for us to track almost 10,000 active satellites.Free trial of The Great Courses Signature Collection or buy
- S1 E9 - Communication Goes Mobile: Cell PhonesApril 19, 202331minSince 2006, the number of landlines has decreased, while the quantity of mobile phones and other communication devices now outnumber the entire human population. Explore how engineers have created the cellular systems required to manage large numbers of calls at once, even as the user moves from place to place.Free trial of The Great Courses Signature Collection or buy
- S1 E10 - Electric Circuit DesignApril 19, 202332minWhen people first realized that electricity could be controlled, it was the beginning of an explosion of opportunity, eventually leading to electronic circuits—circuits that can control other circuits. Learn why just two laws, Ohm’s law and the conservation of energy, provide all the information and relationships needed to design circuits.Free trial of The Great Courses Signature Collection or buy
- S1 E11 - Transistors and BatteriesApril 19, 202335minThe development of the transistor was motivated by the need for a device that could amplify signals. How batteries could convert chemical energy to electrical energy was also developed. Learn how the emergence of these two technologies have allowed us to move from electric circuits to electronic circuits, in which one circuit controls another.Free trial of The Great Courses Signature Collection or buy
- S1 E12 - How Electronics Use Digital LogicApril 19, 202326minWith the advent of logic gates that could be assembled to perform mathematical or logical calculations, engineers could build up from very simple transistors and diodes to a powerful graphic calculator or complex system of facial recognition. Learn about why the numerical basis for logic gates is binary, and how they can be combined to form logic gate circuits.Free trial of The Great Courses Signature Collection or buy
- S1 E13 - Computer Processors and MemoryApril 19, 202328minExplore the earliest electronic computers, including Charles Babbage’s Analytical Engine. Although Babbage was not able to completely build it out before his death, his “engine” was based on the same four components that define computers today—input device, some type of memory to store data and temporary calculations, a calculating processor, and an output device.Free trial of The Great Courses Signature Collection or buy
- S1 E14 - Computer Networks: Ethernet to InternetApril 19, 202333minIn the original telephone system, the connection stayed in place until that one conversation was complete. But when email was developed in the 1970s and ‘80s, people weren’t satisfied sending just one type of signal. Explore the development of the ethernet and internet and learn about the protocols that now allow us to send such a wide variety of information types.Free trial of The Great Courses Signature Collection or buy
- S1 E15 - Photonics: Fiber Optics to Optical StorageApril 19, 202332minDiscover the many benefits of fiber optics, and the broader field known as photonics, and learn why the field and its applications have exploded since the first lasers were developed in the 1960s. Although we cannot yet transmit power over optical fiber, the technology has brought great advantages in communications security and speed, materials longevity, and cost savings.Free trial of The Great Courses Signature Collection or buy
- S1 E16 - Many Kinds of Sensors All around UsApril 19, 202327minElectronic sensors—instruments that detect some type of physical quantity—have been around for more than 130 years, ever since the invention of the electric thermostat. Explore today’s proliferation of sensors all around us and discover their basic similarities as they convert signals into electrical quantities that can be used to take action.Free trial of The Great Courses Signature Collection or buy
- S1 E17 - Electronics Scavenger HuntApril 19, 202333minExplore the electronics in a typical home through this episode’s virtual scavenger hunt. Watch while Dr. Bottomley takes apart a hair dryer, a CD player, a computer CPU, and other machines. You’ll learn about the many electronic components you’ll find inside—resistors, capacitors, inductors, transistors, integrated circuits, electro-mechanical switches, and more.Free trial of The Great Courses Signature Collection or buy
- S1 E18 - Electronics of Sound and MusicApril 19, 202331minWhile sound is not part of the electromagnetic spectrum, it can be manipulated, generated, and shaped by electric circuits. Explore what the signalscope output can tell you about the makeup of various sounds, from a single tone to the human voice to piano chords, and how these can be manipulated by circuits to synthesize entirely new sounds.Free trial of The Great Courses Signature Collection or buy
- S1 E19 - Electronics in Medicine and SafetyApril 19, 202333minThe entire communication system between our brain and each of our senses is electrochemical, with each of our senses acting as a sensor that emits electrochemical outputs. Learn how this aspect of the body opens the door to electrical engineering solutions for medical problems—from cochlear implants to heart pacemakers to defibrillators.Free trial of The Great Courses Signature Collection or buy
- S1 E20 - Control Systems: Smart Cars and Smart GridsApril 19, 202332minExplore cybernetics, systems that use information and feedback to control an output that has some type of goal, with feedback present. Discover the various parts of several cybernetic systems: your car’s cruise control, an implantable insulin delivery pump, and a vending machine—three completely different control systems that all function with the same principles of cybernetics.Free trial of The Great Courses Signature Collection or buy
- S1 E21 - Informatics: Signal Processing to AIApril 19, 202334minWhen we drive a car, we process signals from all aspects of our environment—visual signals large and miniscule, sound, touch, and even smell. Learn what components we would need to create a reliable and safe system of self-driving cars—with signal processing as the basis—and why the system would be almost impossible to create and maintain without the benefit of artificial intelligence.Free trial of The Great Courses Signature Collection or buy
- S1 E22 - Networks of Things: RFID, Bluetooth, and IoTApril 19, 202334minWith the technological development of sensors, feedback control, Bluetooth, and machine learning, we can now network not just computers, but “things” as well. Discover the enormous advantages this “Internet of Things” can provide—from health care to transportation to manufacturing—if we can adequately address the significant concerns regarding privacy and security.Free trial of The Great Courses Signature Collection or buy
- S1 E23 - Electrical Engineering in the Everyday WorldApril 19, 202333minDr. Bottomley takes you on a virtual vacation to Rwanda to highlight myriad examples of electrical engineering all around the world. From your garage door opener to airport security, the technologies developed by electrical engineers are all around you before you even board the plane. But it’s the electronics you’ll find in an isolated game park that might really surprise you.Free trial of The Great Courses Signature Collection or buy
- S1 E24 - The Evolution of Electrical TechnologyApril 19, 202337minWhat does the future of electrical engineering look like? Explore why answering that question depends on technological advances and … everything else in the physical and cultural environment. Using the now-defunct Picture Phone and Betamax as examples, learn how economics, politics, marketing, culture, and more affect which technologies are brought to market, and which will succeed.Free trial of The Great Courses Signature Collection or buy
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