Motivation
I have always been interested in science. The mathematics and the sciences were always my best subjects at school. I have a degree in Mathematics and a PhD in Engineering. My career took me down the path of software engineering and later training and coaching.
A pivotal moment occured on 24 December 2012 when my friend Dr Eric Bescher posted the question on Facebook.
I wish to understood why sunsets are delayed 20 minutes in the next 21 days, whereas sunrises remain unchanged. Shouldn’t this stuff be symmetrical with respect to noon?
It took me months to fully understand the question and its solution the Equation of Time. The project evolved and my target is to be able to predict the time and location of solar eclipses.
One thing became clear during my research is that the signal to noise ratio of the Internet is very poor and getting worse. It is very hard to find good answers to scientific questions. Many articles dive into complex mathematics without explanation that often renders the article incomprehensible. Text books are often just as bad. One major issue is that many texts were written before the modern computer age. Equations are often power series approximations with little or no explanation. A modern laptop can easily perform the full complex computations with no need for approximation.
In 2017 I started a project to understand gravity. It was quite a journey. In the Summer of 2018 I had to understand General Relativity. I had to find my own path as the articles on it tend to omit important information. Einstein’s Field Equations and the Schwarzschild solutions weren’t too difficult. The biggest problem was understanding why things fall. Newton’s concepts of a gravitational force and gravitational potential energy simply don’t exist. The answer lies in the geodesic equations.
I started this web site to make science understandable. I will be adding material as I start sorting my stock of material. Feel free to ask me questions by email <Phill.Edwards@dr-phill-edwards.eu>.
My main career has been in IT, including software development, operations, training and more recently DevOps in the cloud. I have published a number of articles.
Socratic Articles
In 2015 I got heavily involved with the Socratic web site. My focus was answering questions on Astronomy and Astrophysics. I was reviewer for both subjects. Sadly, Socratic has been turned into a read only archive. A number of my anwsers were featured as exceptional.
Astrophysics
Astronomy
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What are the stages of the death of a star? Are they different for different types of stars?
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What is the difference between the strong and weak nuclear forces of the universe?
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What is the difference between a type I and type II supernovas?
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What would be the advantages of measuring stellar parallaxes from Mars rather than from Earth?
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Which type of eclipse, lunar or solar, have most people seen? Why?
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Why do astronomers believe that the engine at the center of a quasar is a supermassive black hole?
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Are there any stars close to Earth with the potential to supernova?
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What is the velocity of Earth at perihelion and aphelion? How is this information calculated?
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How are the north and south celestial poles related to the earth’s axis of rotation?
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How do you calculate the distance above the surface of the earth to geosynchronous orbit?
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How do astronomers measure the mass of a supermassive black hole?
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How would two galaxies in collision produce a supermassive black hole or quasar?
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What is the force that involved in the interactions that allow nuclei to decay?
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How fast is our galaxy moving through space? Is the movement due to the expansion of the universe?
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Why is Pluto now classified as a dwarf planet? Why was it downgraded?
Earth Science
Physics
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