All of my comments and arguments are therefore directed only towards the first edition, cited at the top of the page.
At this time I have not seen the second edition of the book, though I know that one exists.
This mathematical tool was invented by the ubiquitous German mathematician, Carl Freidrich Gauss, circa 1835, for the purpose of evaluating the Earth's magnetic field.
This ingenious method uses an infinite sum of trigonometric functions to evaluate a field, on the surface of a sphere embedded in the field.
4, copyright July, 1973, by the Institute for Creation Research. It is my intention to show that this argument is flawed in the extreme, and is therefore without any merit.
degree in physics from Hardin-Simmons College, Abilene, Texas in 1933, and an M. In this book, Barnes advances the argument that the observed exponential decay of the Earth's magnetic field proves that the Earth cannot be more than about 10,000 years old.
In 1950, the re-named Hardin-Simmons University awarded Barnes the honorary degree, D. He is emeritus professor of physics, University of Texas at El Paso, where he joined the faculty in 1936.
I just stuck them into the numbered sequence with little letters; it's a lot easier than going through and renumbering all those references each time I find something.
In practice, the magnetic field is measured constantly at a number of official magnetic observatories all over the world, as well as at universities, or by other scientific teams and expeditions, and now several spacecraft measure the field well above the Earth, and out into deep space.
These data are then fed into computer programs which use spherical harmonics to create a model for the field everywhere on the Earth.
One way, which I will call the physical model, is to derive the form of the field directly from the equations that govern the physical processes by which the field is generated.