LeBron Raymone James Sr. (; born December 30, 1984) is an American professional basketball player for the Los Angeles Lakers of the National Basketball Association (NBA). Nicknamed "King James", he is widely considered to be one of the greatest players in history and is often compared to Michael Jordan in debates over the greatest basketball player of all time. James has won four NBA championships, four NBA MVP awards, four NBA Finals MVP awards, three All-Star MVP awards, and two Olympic gold medals. James has scored the most career points in both the regular season and playoffs, has the fourth-most career assists, and the tenth-most career steals. He has been named an NBA All-Star a record-tying 19 times, and selected to the All-NBA Team a record 18 times, and to the NBA All-Defensive First Team five times. He has competed in 10 NBA Finals, the third most all time, including eight consecutively between 2011 and 2018. In 2021, James was selected to the NBA 75th Anniversary Team, and in 2022 became the first and only player in NBA history...

The Golden Age of Radio, also known as the old-time radio (OTR) era, was an era of radio in the United States where it was the dominant electronic home entertainment medium. It began with the birth of commercial radio broadcasting in the early 1920s and lasted through the 1950s, when television gradually superseded radio as the medium of choice for scripted programming, variety and dramatic shows. Radio was the first broadcast medium, and during this period people regularly tuned in to their favorite radio programs, and families gathered to listen to the home radio in the evening. According to a 1947 C. E. Hooper survey, 82 out of 100 Americans were found to be radio listeners. A variety of new entertainment formats and genres were created for the new medium, many of which later migrated to television: radio plays, mystery serials, soap operas, quiz shows, talent shows, daytime and evening variety hours, situation comedies, play-by-play sports, children's shows, cooking shows, and more. In the 1950s, television surpassed radio as the most popular broadcast medium, and commercial radio programming shifted to narrower formats of news, talk, sports...

The asthenosphere (from Ancient Greek ἀσθενός (asthenós) 'without strength') is the mechanically weak and ductile region of the upper mantle of Earth. It lies below the lithosphere, at a depth between ~80 and 200 km (50 and 120 mi) below the surface, and extends as deep as 700 km (430 mi). However, the lower boundary of the asthenosphere is not well defined. The asthenosphere is almost solid, but a slight amount of melting (less than 0.1% of the rock) contributes to its mechanical weakness. More extensive decompression melting of the asthenosphere takes place where it wells upwards, and this is the most important source of magma on Earth. It is the source of mid-ocean ridge basalt (MORB) and of some magmas that erupted above subduction zones or in regions of continental rifting. Characteristics The asthenosphere is a part of the upper mantle just below the lithosphere that is involved in plate tectonic movement and isostatic adjustments. It is composed of peridotite, a...

Dragoons were originally a class of mounted infantry, who used horses for mobility, but dismounted to fight on foot. From the early 17th century onward, dragoons were increasingly also employed as conventional cavalry and trained for combat with swords and firearms from horseback. While their use goes back to the late 16th century, dragoon regiments were established in most European armies during the 17th and early 18th centuries; they provided greater mobility than regular infantry but were far less expensive than cavalry. The name reputedly derives from a type of firearm, called a dragon, which was a handgun version of a blunderbuss, carried by dragoons of the French Army.The title has been retained in modern times by a number of armoured or ceremonial mounted regiments. Origins and name The establishment of dragoons evolved from the practice of sometimes transporting infantry by horse when speed of movement was needed. In 1552, Alexander Farnese, Duke of Parma mounted several companies...

The use of medicinal clay in folk medicine goes back to prehistoric times. Indigenous peoples around the world still use clay widely, which is related to geophagy. The first recorded use of medicinal clay goes back to ancient Mesopotamia. A wide variety of clays are used for medicinal purposes—primarily for external applications, such as the clay baths in health spas (mud therapy). Among the clays most commonly used are kaolin and the smectite clays such as bentonite, montmorillonite, and Fuller's earth. History Ancient Egypt and Mesopotamia The first recorded use of medicinal clay is on Mesopotamian clay tablets around 2500 B.C. Also, ancient Egyptians used clay. The Pharaohs’ physicians used the material as anti-inflammatory agents and antiseptics. It was used as a preservative for making mummies and is also reported that Cleopatra used clays to preserve her complexion.The Ebers Papyrus of about 1550 BC (but containing the tradition going back many centuries earlier) is an important medical text from ancient Egypt. It describes the use of ochre for a wide variety...

In music, an aria (Italian: [ˈaːrja]; plural: arie [ˈaːrje], or arias in common usage, diminutive form arietta [aˈrjetta], plural ariette, or in English simply air) is a self-contained piece for one voice, with or without instrumental or orchestral accompaniment, normally part of a larger work. The typical context for arias is opera, but vocal arias also feature in oratorios and cantatas, or they can be stand-alone concert arias. The term was originally used to refer to any expressive melody, usually, but not always, performed by a singer. Etymology The Italian term aria, which derives from the Greek ἀήρ and Latin aer (air), first appeared...

George Berkeley (; 12 March 1685 – 14 January 1753) – known as Bishop Berkeley (Bishop of Cloyne of the Anglican Church of Ireland) – was an Anglo-Irish philosopher whose primary achievement was the advancement of a theory he called "immaterialism" (later referred to as "subjective idealism" by others). This theory denies the existence of material substance and instead contends that familiar objects like tables and chairs are ideas perceived by the mind and, as a result, cannot exist without being perceived. Berkeley is also known for his critique of abstraction, an important premise in his argument for immaterialism.In 1709, Berkeley published his first major work, An Essay Towards a New Theory of Vision, in which he discussed the limitations of human vision and advanced the theory that the proper objects of sight are not material objects, but light and colour. This foreshadowed his chief philosophical work, A Treatise Concerning the Principles of Human Knowledge, in 1710, which, after its poor reception, he rewrote in dialogue form and published under the title Three Dialogues between Hylas and Philonous...

The Roots-type blower is a positive displacement lobe pump which operates by pumping a fluid with a pair of meshing lobes resembling a set of stretched gears. Fluid is trapped in pockets surrounding the lobes and carried from the intake side to the exhaust. The most common application of the Roots-type blower has been the induction device on two-stroke diesel engines, such as those produced by Detroit Diesel and Electro-Motive Diesel. Roots-type blowers are also used to supercharge four-stroke Otto cycle engines, with the blower being driven from the engine's crankshaft via a toothed or V-belt, a roller chain or a gear train. The Roots-type blower is named after American inventors and brothers Philander and Francis Marion Roots, founders of the Roots Blower Company of Connersville, Indiana USA, who patented the basic design in 1860 as an air pump for use in blast furnaces and other industrial applications. In 1900, Gottlieb Daimler included a Roots-style blower in a patented engine design, making the Roots-type blower the oldest of the various designs...

The Founding Fathers of the United States (known simply as the Founding Fathers, Founders, or Framers) were a group of late-18th-century American revolutionary leaders who united the Thirteen Colonies, oversaw the War of Independence from Great Britain, established the United States, and crafted a framework of government for the new nation. Historians are in general agreement that six of the most prominent leaders of the Revolutionary Era of 1765–1791 are Founding Fathers: George Washington, Benjamin Franklin, John Adams, Thomas Jefferson, James Madison, and Alexander Hamilton. The list of Founders is often expanded to include the signers of the Declaration of Independence and individuals who later ratified the U.S. Constitution. Meanwhile, some scholars regard all delegates to the Constitutional Convention as Founding Fathers whether they approved the Constitution or not. In addition, some historians include signers of the Articles of Confederation, which was adopted in 1781 as the nation's first constitution.Beyond this, the criteria for inclusion vary. Historians with an expanded view of the list of Founding...

A phase converter is a device that converts electric power provided as single phase to multiple phase or vice versa. The majority of phase converters are used to produce three-phase electric power from a single-phase source, thus allowing the operation of three-phase equipment at a site that only has single-phase electrical service. Phase converters are used where three-phase service is not available from the utility, or is too costly to install due to a remote location. A utility will generally charge a higher fee for a three-phase service because of the extra equipment, including transformers, metering, and distribution wire. Conversion systems Three-phase induction motors may operate adequately on an unbalanced supply if not heavily loaded. This allows various imperfect techniques to be used. A single-phase motor can drive a three-phase generator, which will produce a high-quality three-phase source but with high cost for apparatus. Several methods exist to run three-phase motors from a single-phase supply, these can in general be classified as: Rotary phase converters constructed from a three-phase electric...