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Showing 1-50 of 419 Articles

Physics Nobel Prize Winners 1970 Hannes Alfvén, and Louis Néel shared the 1970 Nobel Prize in physics for contributions to plasma physics and to magnetism applied to solid state physics. Apr 30, 2012 - Paul A. Heckert

Physics Nobel Prize Winner 1969 Murray Gell-Mann won the 1969 Nobel Prize in Physics for his work with quarks and the eightfold way to classify elementary particles. Mar 22, 2012 - Paul A. Heckert

Physics Nobel Prize Winner 1968 Luis Alvarez won the Nobel Prize in Physics in 1968 for improving the design of bubble chambers to allow the discovery of very short lived particles. Feb 29, 2012 - Paul A. Heckert

Venus Transits Sun June 5/6, 2012 When Venus passes between the Earth and Sun, it transits the Sun. Pairs of Venus transits typically occur over a century apart. Jan 4, 2012 - Paul A. Heckert

Dates and Places to Observe Lunar Eclipses During 2012 When the Moon passes through Earth's shadow, stargazers see a lunar eclipse. When and where are the lunar eclipses in 2012? Jan 3, 2012 - Paul A. Heckert

Dates and Places to Observe Solar Eclipses During 2012 When the Moon's shadow passes across a small portion of Earth, stargazers see a solar eclipse. When and where are the solar eclipses in 2012? Dec 27, 2011 - Paul A. Heckert

Why Massive and Light Objects Fall Down with Same Acceleration Regardless of their mass all objects fall to Earth's surface at the same rate. Why does the downward acceleration of gravity not depend on mass? Nov 27, 2011 - Paul A. Heckert

Physics Nobel Prize Winners 2011 Saul Perlmutter, Brian Schmidt, and Adam Riess won the 2011 Nobel prize in physics for discovering that the expansion of the universe is accelerating. Oct 14, 2011 - Paul A. Heckert

How Kepler Mission Discovered a Double Sun Planet, like Tatooine NASA's Kepler spacecraft discovered a planet orbiting the eclipsing binary star Kepler-16 every 229 days. How did astronomers make this discovery? Sep 22, 2011 - Paul A. Heckert

The Importance of Serendipity in Scientific Discovery Serendipity plays an important role in scientific discoveries, but it takes an exceptional scientist to follow up on lucky breaks. Aug 10, 2011 - Paul A. Heckert

Archimedes's Principle: How Much Water Does a Ship Need To Float? Just how much water does a large ship need to float? Could, for example, a battleship float in a bathtub? Panama Canal locks provide a good illustration. Jul 24, 2011 - Paul A. Heckert

Air Resistance and Drafting in Bicycling and Running The reason drafting, or riding behind another rider, is common in bicycle but not running races results from the physics of air resistance. Jun 24, 2011 - Paul A. Heckert

Why the Same Side of the Moon Always Faces Earth: Tidal Locking How friction from tidal forces affects the Earth and Moon, slowed the Moon's rotation rate until a lunar day equals a month, and slows Earth's rotation. May 8, 2011 - Paul A. Heckert

Can Lunar Tidal Forces Cause More Births During the Full Moon? A scientific look at the urban myth that tidal forces on amniotic fluid cause more babies to be born during the full Moon. Apr 13, 2011 - Paul A. Heckert

How the Moon's Gravity Causes Tides and Tidal Forces Ocean tides result from tidal forces caused by the difference in gravitational forces from the Moon and Sun at differing locations on Earth. Apr 7, 2011 - Paul A. Heckert

Types of Radiation: Alpha, Beta, and Gamma Rays Physicists classify radiation into three types. Alpha and beta radiation is actually particles. Gamma radiation is high energy electromagnetic waves. Mar 21, 2011 - Paul A. Heckert

Can a Full Moon at Perigee, a Supermoon, Cause Earthquakes? Comparing tidal forces during the March 2011 supermoon to normal tidal forces suggests that a perigee during full Moon does not cause earthquakes. Mar 15, 2011 - Paul A. Heckert

Why There Are no Sounds in Space Unlike light waves, sound waves cannot travel through a vacuum. Hence space is silent, rockets traveling through space make no sound. Feb 28, 2011 - Paul A. Heckert

Physics Nobel Prize Winner 1967 Hans Bethe won the 1967 Nobel Prize in Physics for explaining how nuclear fusion reactions produce energy in the Sun and other stars. Feb 17, 2011 - Paul A. Heckert

Physics Nobel Prize Winner 1966 Alfred Kastler won the 1966 Nobel Prize in Physics for developing optical techniques to study Hertzian resonances in atoms. Feb 11, 2011 - Paul A. Heckert

Physics Nobel Prize Winners 1965 Sin-Itiro Tomonaga, Julian Schwinger, and Richard P. Feynman shared the 1965 physics Nobel Prize for theoretical work in quantum electrodynamics. Jan 31, 2011 - Paul A. Heckert

How Thunderstorms Produce Antimatter Positrons Discovered by NASA NASA's Fermi gamma-ray telescope has discovered that thunderstorms produce positrons, a type of antimatter in Terrestrial Gamma-ray Flashes (TGFs). Jan 12, 2011 - Paul A. Heckert

What Is Antimatter? When matter and antimatter come into contact, they mutually annihilate each other in a high energy burst of gamma-rays. Jan 12, 2011 - Paul A. Heckert

Einstein's Special Relativity and Mass Energy Equivalency, E=mc² Einstein's famous equation, E=mc², revolutionized physics by equating mass and energy and by providing an equivalency between mass and energy. Jan 4, 2011 - Paul A. Heckert

Dates and Places to Observe Solar Eclipses During 2011 During solar eclipses, the Moon's shadow passes across a small portion of Earth. What are the dates and best places to watch solar eclipses in 2011? Dec 27, 2010 - Paul A. Heckert

Dates and Places to Observe Lunar Eclipses During 2011 During lunar eclipses, the full Moon passes through Earth's shadow. What are the dates and best places to watch the lunar eclipses in 2011? Dec 27, 2010 - Paul A. Heckert

The Speed of Light, c, the Ultimate Speed Limit in the Universe According to Einstein's special theory of relativity, no object having mass can travel at or faster than the speed of light in a vacuum. Dec 17, 2010 - Paul A. Heckert

Mass Increase with Speed in Einstein's Special Relativity Theory Einstein's special theory of relativity predicts that the mass of a moving object increases with its speed and becomes infinite at the speed of light. Nov 30, 2010 - Paul A. Heckert

Time Dilation in Einstein's Special Theory of Relativity Einstein predicts time dilation in his special relativity theory. Observers at rest see time move more slowly for objects moving near the speed of light. Nov 22, 2010 - Paul A. Heckert

Lorentz Contraction in Einstein's Special Theory of Relativity Einstein's special relativity theory predicts Lorentz contraction. An object moving near the speed of light will appear shorter to an observer at rest. Nov 19, 2010 - Paul A. Heckert

Constant Speed of Light in Einstein's Special Relativity Theory To derive the theory of special relativity, Einstein assumed that the speed of light is a fundamental constant for all unaccelerated observers. Nov 12, 2010 - Paul A. Heckert

Physics Nobel Prize Winners 1964 Charles Townes, Nicolay Basov, and Aleksandr Prokhrov won the 1964 physics Nobel Prize for work in quantum electronics leading to lasers and masers. Oct 19, 2010 - Paul A. Heckert

Physics Nobel Prize Winners 1963 Eugene Wigner, Maria Goeppert-Mayer, and Hans Jensen won the 1963 Nobel Prize in Physics for their contributions to understanding nuclear physics. Oct 15, 2010 - Paul A. Heckert

Physics Nobel Prize Winners 2010 Andre K. Geim and Konstantin S. Novoselov won the 2010 Nobel Prize in Physics for their discovery of a new form of carbon, graphene. Oct 5, 2010 - Paul A. Heckert

Physics Nobel Prize Winners 2009 Charles Kao, Willard Boyle, and George Smith shared the 2009 Nobel Prize in Physics for their work in fiber optic cables and charged coupled devices, CCDs. Oct 3, 2010 - Paul A. Heckert

Physics Nobel Prize Winner 1962 Lev Landau won the Nobel Prize in Physics in 1962 for his theoretical work on superfluid states of liquid helium. Sep 24, 2010 - Paul A. Heckert

Physics Nobel Prize Winners 1961 Robert Hofstader and Rudolf Mössbauer shared the 1961 physics Nobel Prize for work on electron scattering in nuclei and discovering the Mössbauer effect. Sep 20, 2010 - Paul A. Heckert

What is Haiti Like? Visitor's Impression of Haitian Life & People A blan's first visit to Haiti, prior to the devastating 2010 earthquake, with personal impressions of life in Haiti, the poorest western hemisphere country. Sep 7, 2010 - Paul A. Heckert

Physics Nobel Prize Winner 1960 Donald A. Glaser won the 1960 physics Nobel Prize for inventing the bubble chamber, which led to discoveries in nuclear and high energy particle physics. Sep 6, 2010 - Paul A. Heckert

Physics Nobel Prize Winners 1959 Emilio Gino Segrè and Owen Chamberlain won the 1959 Nobel physics prize for discovering the antiproton. Aug 30, 2010 - Paul A. Heckert

Are Planets Destroyed by Collisions in Binary Star Systems? Spitzer Space Telescope observations suggest RS CVn type close binary systems make planetary orbits unstable leading to planet destroying collisions. Aug 26, 2010 - Paul A. Heckert

Running Magazines: Informative Reading and Good Gifts for Runners Running magazines of interest to runners include: Runner's World, Marathon and Beyond, Ultrarunning, Running Times, and Trail Runner. Aug 20, 2010 - Paul A. Heckert

Physics Nobel Prize Winners 1958 P.A. Cherenkov, I.M. Frank, and I.Y. Tamm were the 1958 Physics Nobel laureates for discovering and interpreting Cherenkov radiation. Aug 17, 2010 - Paul A. Heckert

Supernovas, Amino Acids, Formation of Elements, & Origin of Life Supernovas may have caused amino acids, building blocks for life on Earth, to be left-handed, as well as forged and recycled atoms of elements for life. Aug 13, 2010 - Paul A. Heckert

Physics Nobel Prize Winners 1957 Chen NingYang and Tsung-Dao Lee were the 1957 Physics Nobel laureates for predicting parity violations in beta decay and other weak interactions. Aug 13, 2010 - Paul A. Heckert

Physics Nobel Prize Winners 1956 William B. Shockley, John Bardeen, and Walter H. Brattain won the 1956 Physics Nobel Prize for their discovery of the transistor. Aug 11, 2010 - Paul A. Heckert

Coriolis Effect: Toilets & Drains in North & South Hemispheres The Coriolis effect does not cause clockwise or counterclockwise rotation of flushing toilets or draining sinks in the northern or southern hemispheres. Jul 29, 2010 - Paul A. Heckert

Coriolis Effect: Northern & Southern Hemisphere Cyclone Rotation The Coriolis effect causes high and low pressure weather systems to spin in opposite directions in the northern and southern hemispheres. Jul 29, 2010 - Paul A. Heckert

Physics Nobel Prize Winners 1955 Physics Nobel Prize winning discoveries for 1955 were the Lamb shift in hydrogen spectral lines and Kusch's measurement of the electron magnetic moment. Jul 18, 2010 - Paul A. Heckert

Linear Lepton Accelerator next after LHC for Particle Physics With the CERN Large Hadron Collider (LHC) operational, elementary particle physicists are planning the next big lepton collider for high energy physics. Jul 17, 2010 - Paul A. Heckert

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