Edwin Howard Armstrong (December 18, 1890 – January 31, 1954) was an American electrical engineer and inventor. Armstrong was the inventor of frequency modulation (FM) radio. Edwin Howard Armstrong was born in New York City, New York, in 1890. He studied at Columbia University and later became a professor there.
Human immunodeficiency virus (HIV) is a lentivirus (a member of the retrovirus family) that causes acquired immunodeficiency syndrome (AIDS), a condition in humans in which the immune system begins to fail, leading to life-threatening opportunistic infections. Infection with HIV occurs by the transfer of blood, semen, vaginal fluid, pre-ejaculate, or breast milk. Within these bodily fluids, HIV is present as both free virus particles and virus within infected immune cells.
Magnetic resonance imaging (MRI), or nuclear magnetic resonance imaging (NMRI), is primarily a medical imaging technique most commonly used in radiology to visualize detailed internal structure and limited function of the body. MRI provides much greater contrast between the different soft tissues of the body than computed tomography (CT) does, making it especially useful in neurological (brain), musculoskeletal, cardiovascular, and oncological (cancer) imaging.
The telephone is a telecommunications device that transmits and receives sound, most commonly the human voice. Telephones are a point-to-point communication system whose most basic function is to allow two people separated by large distances to talk to one another. It is one of the most common household appliances in the developed world, and has long been considered indispensable to business, industry and government.
The incandescent light bulb, incandescent lamp or incandescent light globe is a source of electric light that works by incandescence (a general term for heat-driven light emissions, which includes the simple case of black body radiation). An electric current passes through a thin filament, heating it to a temperature that produces light. The enclosing glass bulb contains either a vacuum or an inert gas to prevent oxidation of the hot filament.
Robert Edwin Peary (May 6, 1856 – February 20, 1920) was an American explorer who claimed to have been the first person, on April 6, 1909, to reach the geographic North Pole. Peary's claim was widely credited for most of the 20th century, though it was criticized even in its own day and is today widely doubted.
The names for the chemical elements 104 to 106 were the subject of a major controversy starting in the 1960s, described by some nuclear chemists as the Transfermium Wars because it concerned the elements subsequent to fermium (element 100). The final resolution of this controversy in 1997 also decided the names of elements 107 to 109.
Johann Philipp Reis (January 7, 1834 – January 14, 1874) was a self-taught German scientist and inventor, who in 1860-1861 constructed an early telephone, today called the Reis telephone. He first publicly demonstrated it on October 26, 1861.
Gordon Gould (July 17, 1920 – September 16, 2005) was an American physicist who is widely, but not universally, credited with the invention of the laser. Gould is best known for his thirty-year fight with the United States Patent and Trademark Office to obtain patents for the laser and related technologies. He also fought with laser manufacturers in court battles to enforce the patents he subsequently did obtain.
Rob Donn (Brown haired Rob) was a Scottish Gaelic poet from Sutherland. It is generally assumed that his surname was MacKay (MacAoidh), but this has been disputed, so he is sometimes referred to as "Rob Donn MacAoidh".
Nora Buchanan (born Hanen, formerly Gannon and Colson) is a fictional character on the long-running American soap opera One Life to Live. The role was originated by Hillary B. Smith in September 1992. When Nora debuted in 1992, she quickly made a connection with fans for her backstory (She was a Jewish attorney divorced from Hank Gannon, an African-American attorney, with whom she had a biracial daughter, Rachel).
André Tanneberger is a German DJ, musician, and producer of electronic dance music. According to the official world DJ rankings governed by DJ Magazine, ATB was ranked #11 in 2009. He is also ranked as world number 4 according to "The DJ List".
Dayton Carr is the founder of Venture Capital Fund of America a private equity firm that is credited with inventing the Private equity secondary market. Unlike later entrants to the market, including Jeremy Coller of Coller Capital, Carr chose to keep his funds relatively small despite strong investment performance. Jeremy Coller, whose firm is one of the largest in the market, was an early investor with Carr. Since inception in 1982, VCFA has raised nine funds totaling over $730 million.