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Weather: Radar—Scanning the Skies
Radar—Scanning the SkiesWeatherRadar and SatellitesRadar—Scanning the SkiesDoppler—the New GenerationSatellites—a Far-Out LookThe Modern EraPutting It All Together The first radar (radio detection…Major Earthquakes
The Question: How big does an earthquake have to be to be considered "major" and how many major earthquakes happen each year? The Answer: For…FM Radio
The Question: When did FM radio begin? The Answer: Howard Armstrong broadcast the first radio transmission employing frequency…Earthquakes Primer
About 8,000 mini-quakes a day, and on average, one exceptionally big one per year by Borgna Brunner Earthquakes in residential areas, such as this 1964 one in Seward, Alaska, can…SETI
(Encyclopedia) SETISETIsĕtˈē [key] [Search for ExtraTerrestrial Intelligence], name given to a series of independent programs to detect radio signals from civilizations beyond the solar system.…Ernst Alexanderson
Ernst Alexanderson Born: 1872 Birthplace: Sweden High frequency alternator—Alexanderson built a high frequency…Edwin Armstrong
Edwin Armstrong Born: 1890Birthplace: New York City Method of receiving high frequency oscillations—Armstrong devised wide-band frequency modulation (FM radio) as a means of reducing…Willard Harrison Bennett
Willard Harrison BennettBorn: 1903Birthplace: Findlay, Ohio Radio frequency mass spectrometer—Bennett studies in gases ionized by high voltage electricity was used in controlled thermonuclear…The Severity of an Earthquake
Source: National Earthquake Information Center, U.S. Geological Survey Earthquakes are the result of forces deep within Earth's interior that continuously affect its surface. The energy from…Theories of the Universe: Bohr's Atomic Theory
Bohr's Atomic TheoryTheories of the UniverseThat Old Quantum TheoryPlanck's ConstantPhotoelectric Effect Explained, the Quantum Strikes AgainBohr's Atomic Theory Neils Bohr is considered the…Trending
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