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Electronics - Optoelectronics, Functions, Devices | Britannica
Electronics - Optoelectronics, Functions, Devices: Some electronic applications depend on the interactions between light and semiconductor materials mentioned in the section Optoelectronics. Such applications include the conversion of sunlight to electricity in solar cells. Most cells of this type consist of silicon diodes in specially designed enclosures to allow sunlight to illuminate them ...
Optoelectronics | technology | Britannica
Optoelectronics is a branch of electronics that focuses on the interaction between light and semiconductor materials. It involves electronic devices that emit, modulate, transmit, and sense light. This field is crucial for applications like solar cells, which convert sunlight into electricity, and light-emitting diodes (LEDs) used for indicators and lighting. Optoelectronics also enables ...
Solar cell | Definition, Working Principle, & Development | Britannica
Solar cell, any device that directly converts the energy of light into electrical energy through the photovoltaic effect. The majority of solar cells are fabricated from silicon—with increasing efficiency and lowering cost as the materials range from amorphous to polycrystalline to crystalline silicon forms.
Optics | History, Applications, & Facts | Britannica
Optics, science concerned with the genesis and propagation of light and with the changes that it undergoes and produces. Physical optics deals with the nature of light itself. Geometrical optics has to do with the principles that govern the image-forming properties of devices that make use of light.
Electronics - Semiconductor, Revolution, Technology | Britannica
Electronics - Semiconductor, Revolution, Technology: The invention of the transistor in 1947 by John Bardeen, Walter H. Brattain, and William B. Shockley of the Bell research staff provided the first of a series of new devices with remarkable potential for expanding the utility of electronic equipment (see photograph). Transistors, along with such subsequent developments as integrated circuits ...
Electromagnetic radiation - Radio Waves, Frequency, Wavelength - Britannica
Electromagnetic radiation - Radio Waves, Frequency, Wavelength: Radio waves are used for wireless transmission of sound messages, or information, for communication, as well as for maritime and aircraft navigation. The information is imposed on the electromagnetic carrier wave as amplitude modulation (AM) or as frequency modulation (FM) or in digital form (pulse modulation). Transmission ...
Mary Seacole | Biography, Facts, Family, & Nursing | Britannica
Mary Seacole, Jamaican businesswoman who provided sustenance and care for British soldiers at the battlefront during the Crimean War. Her autobiography, Wonderful Adventures of Mrs. Seacole in Many Lands, was a best seller. In 2004 she took first place in the 100 Great Black Britons poll in the U.K.
Name That Dinosaur! Quiz | Britannica
Take this Science quiz at Encyclopaedia Britannica to test your knowledge of dinosaurs.
Sahul | Description & Facts | Britannica
Sahul, paleocontinent made up of the present-day landmasses of Australia, Tasmania, and New Guinea and the land bridges (which were composed of nearby emergent sea basins) that connected them during the Pleistocene Epoch (2.6 million to 11,700 years ago). Sahul existed from the onset of the
Hurricane Camille | Date, Damage, Wind Speed, Storm Surge, & Category ...
Hurricane Camille was a tropical cyclone, one of the strongest of the 20th century, that hit the United States in August 1969. After entering the Gulf of Mexico, the hurricane struck the Mississippi River basin. As the storm moved inland across much of the southeastern United States and Appalachia, it caused severe flash flooding.
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