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Dr. Chad Davies
Barnesville, GA
Husband, Christian, Educator, Astronomer, Cyclist, Amateur Philosopher and Historian, Beer Lover, Dog Owner
Interests: Physics, Astronomy, Cycling, History, Philosophy, Theology, Cooking
Recent Activity
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In this episode we consider the question of whether a person can be both religious and a scientist by looking at the early life of the British astrophysicist and lifelong Quaker, Arthur Stanley Eddington. Direct Download Link Apple Podcasts Link Arthur Stanley Eddington Owen's College, University of Manchester Dalton Hall,... Continue reading
Posted 4 days ago at The Scientific Odyssey
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In our final narrative episode of this series, we encounter the last piece of the cosmological puzzle-dark energy. We look at the way in which is was discovered and what it means for the ultimate fate of our universe. In this, The final piece of the λ-CDM model of the... Continue reading
Posted Nov 30, 2017 at The Scientific Odyssey
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This week we look at the work of Vera Rubin and Fritz Zwicky that led to the idea that roughly 85% of the matter in the universe can't be detected except by the gravitational influence on the matter we can see. We also consider alternative explanations such as MOND theories... Continue reading
Posted Nov 22, 2017 at The Scientific Odyssey
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In the late 1960's and early 1970's, several problems arose with the Big Bang Theory's attempt to explain certain aspects of the early universe. In 1979, Alan Guth worked out a solution to those known as the Inflationary Model that added a new layer of understanding of the physical processes... Continue reading
Posted Nov 17, 2017 at The Scientific Odyssey
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Wherein we discuss the detection of the Cosmic Microwave Background Radiation by Arno Penzias and Robert Wilson. Direct Download Link Apple Podcasts Link Robert Wilson and Arno Penzias COBE Cosmic Microwave Background Radiation Data Continue reading
Posted Nov 13, 2017 at The Scientific Odyssey
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This week we look at the work of a number of astrophysicists including Cecilia Payne, Arthur Eddington, Hans Bethe and Charles Critchfield, and Fred Hoyle and Willie Fowler to better understand how the elements are made within the cores of stars. Special introduction by Stephen Guerra of the History of... Continue reading
Posted Nov 6, 2017 at The Scientific Odyssey
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In 1948, one of the most important papers in the history of science was published in the pages of the Physical Review. In it, authors Ralph Alpher, Hans Bethe (in absentia) and George Gamow not only perpetrated one of the greatest plays on words in the annals of science, they... Continue reading
Posted Oct 23, 2017 at The Scientific Odyssey
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In our third and final installment of the life of George Ellery Hale, we look at the establishment of the Mt. Wilson Observatory and his other endeavors. We also examine the psychological pressures that drove him and eventually lead to his mental breakdown. Direct Download Link Apple Podcasts Link Continue reading
Posted Oct 22, 2017 at The Scientific Odyssey
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In the decade between 1890 and 1900, George Hale went from being a promising graduate of MIT to the world famous director of the Yerkes Observatory. In this episode, we follow his life and work during this critical time. Direct Download Link Apple Podcasts Link George Ellery Hale with a... Continue reading
Posted Oct 3, 2017 at The Scientific Odyssey
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This week we begin a biographical series on George Ellery Hale by covering his life from his childhood in Chicago up through his graduation and marriage. Direct Download Link Apple Podcasts Link George Ellery Hale at age 20 Continue reading
Posted Sep 25, 2017 at The Scientific Odyssey
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The shift from astronomy to astrophysics necessitated the development of new tools of observation at the end of the 19th and beginning of the 20th century. In this episode, we look at the rise of the reflecting telescopes and the men who use them including, James Keeler and George Ritchey,... Continue reading
Posted Sep 18, 2017 at The Scientific Odyssey
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In 1927 Fr. Georges Lemaire published a paper in a little known Belgian scientific journal that described an expanding universe. Two years later, Milton Humason and Edwin Hubble presented evidence to support support this model. In this episode, we look at the development of the idea of a universe that... Continue reading
Posted Sep 11, 2017 at The Scientific Odyssey
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On November 25th of 1915, Albert Einstein presented a paper on his General Theory of Relativity that by its end had conclusively shown that the Vulcan hypothesis was not necessary to explain the precession of the perihelion of the orbit of Mercury. It also completely reimagined the structure of space... Continue reading
Posted Sep 4, 2017 at The Scientific Odyssey
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In 1925, the astronomer Henry Norris Russell read a paper at the 33rd meeting of the American Astronomical Society. The paper, written by Edwin Hubble, a staff astronomer at the Mt. Wilson observatory, detailed observations of Cepheid variable stars in the Andromeda Nebula. These observations and the analysis of them... Continue reading
Posted Aug 28, 2017 at The Scientific Odyssey
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On April 26th of 1920, Harlow Shapley and Heber Curtis presented talks on the idea of island universes to the National Academy of Sciences. Held at the Smithsonian Museum of Natural History, the Great Debate, as it would come to be known, would showcase two differing views of the scale... Continue reading
Posted Aug 21, 2017 at The Scientific Odyssey
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In 1914, Harlow Shapley moved to work at the Mt. Wilson Observatory. Over the course of five years, using the 60 inch reflector there, he observed the 75 visible globular clusters and developed a whole new model of the Milky Way Galaxy and our place in it. Direct Download Link... Continue reading
Posted Aug 6, 2017 at The Scientific Odyssey
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In our final episode of this mini-series on the women who worked at the Harvard College Observatory, we dive into the life of Cecilia Payne-Gaposchkin from her time at Cambridge University to her life in Cambridge, Massachusetts. Direct Download Link Apple Podcasts Link Continue reading
Posted Aug 1, 2017 at The Scientific Odyssey
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In this episode we take a look at the history of the development of the metric system out of the French Revolution and the roles of Jerome Lalande, Pierre Mechain and Jean Baptiste Delambre in conducting the Meridian Survey of 1792. Direct Download Link Apple Podcast Link Borda Repeating Circle... Continue reading
Posted Jul 24, 2017 at The Scientific Odyssey
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Annie Jump Cannon and Henrietta Swan Leavitt would form the core of the calculation staff at the Harvard College Observatory for nearly two decades. They oversaw the transition of the Observatory from the directorship of Edward Charles Pickering to Harlow Shapley and established the dominant classification systems and physical laws... Continue reading
Posted Jul 19, 2017 at The Scientific Odyssey
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In the first part of a multi episode series, we look at the lives of two very different women. Williamina Fleming and Antonia Maury both made significant contributions to the field of stellar spectroscopy by developing classification systems to better understand the light from stars but their different backgrounds and... Continue reading
Posted Jul 10, 2017 at The Scientific Odyssey
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This week we take an in-depth look at the work done at the Harvard College Observatory on cataloging and classifying variable stars under the direction of Charles Edward Pickering. We examine the contributions of Williamina Fleming, Annie Jump Cannon and Henrietta Swan Leavitt that resulted in the the period-luminosity relationship,... Continue reading
Posted Jul 3, 2017 at The Scientific Odyssey
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This week we take a look at weather forecasting after the Navigator's trip to Boulder, CO for the NASA Social event covering the launch of the JPSS-1 polar orbiting satellite. We discuss a brief history of weather forecasting, the roles of both geosynchronous and polar orbiting satellites in that endeavor... Continue reading
Posted Jun 25, 2017 at The Scientific Odyssey
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In the years between 1905 and 1911, the astronomer Ejnar Hertzsprung and Henry Russell Norris developed a way of representing the accumulating astronomical and astrophysical data on stars that revealed the presence of a relationship between a stars brightness and its temperature. This Hertzsprung-Russell or H-R Diagram would come to... Continue reading
Posted Jun 16, 2017 at The Scientific Odyssey
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This week, with the help of steampunk attired lady and gentleman bugs, we take a look at the Doppler effect. We use water waves, sound and light to examine the consequences of what happens with the observer of a wave is moving with respect to the wave's source. We also... Continue reading
Posted Jun 5, 2017 at The Scientific Odyssey
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This week we look at the spectral classification work of Antonia Maury and Annie Jump Cannon at the Harvard College Observatory. Direct Download Link Apple Podcasts Link Antonia Maury Annie Jump Cannon Continue reading
Posted Jun 1, 2017 at The Scientific Odyssey