Concepts of Planetary Magnetism

Within naturalistic origin concepts, the primary explanation of a magnetic field on a planetary scale is the dynamo theory. The dynamo theory states that a planet must have a molten metal core that has fluid motion. However, the reality of the measurement of magnetic fields does not match and cannot be explained using the dynamo theory.

Magnetic Theory

Name

Magnetism receives it’s name from a region in Asia Minor known as Magnesia. This was an ancient source of lodestone which is a naturally occurring magnetic iron ore.

Parts of a Magnet

A magnet is an object that can produce a magnetic field outside of itself. Magnets are considered to be dipole which means that the poles always come in pairs as a monopole has never been found. Interestingly, if a magnet is broken into two pieces they immediately form both poles on both pieces. The flux, or flow, of the magnet is, by convention, described as flowing from the north to the south poles.

Types of Magnetic Properties

When considered as a force, magnetism is a force of attraction or repulsion which is able to act at a distance. The strength of this force follows the inverse-square law regarding distance and is directly proportional to strength of the pole. Technically, almost all elements and compounds have some magnetic properties. The type most commonly thought of is the ferromagnetic materials like iron, nickel, and cobalt that are capable of becoming permanently magnetized. However, the most common form is the diamagnetic materials, such as bismuth and antimony, that have a weak repulsion to both poles of a magnet. There are also the paramagnetic materials, such as chromium, that become weakly magnetic when near a magnet but which quickly lose this characteristic when the magnet is taken away.

Planetary Magnetism within our Solar System

Dynamo Theory

Within naturalistic origin concepts, the primary explanation of a magnetic field on a planetary scale is the dynamo theory. The dynamo theory states that a planet must have a molten metal core that has fluid motion. However, the reality of the measurement of magnetic fields does not match and cannot be explained using the dynamo theory.

Inner Planets

Mercury has been shown to have a magnetic field yet if it was billions of years old it should be frozen solid. Venus is similar to Earth in size, mass, and composition but it has no magnetic field. The geomagnetic field of the Earth is the most studied within the solar system. The magnetic field strength of Earth has fallen 14% since 1829 which suggests it is losing halve of its energy every 700 years. This shows the magnetic field can be at most tens of thousands of years old and not billions.

Gas Planets

Ganymede, one of the moons of Jupiter, has a magnetic field. Uranus has a magnetic axis that is 60 degrees off from the axis of rotation and also offset from the center of the planet. Neptune also has a magnetic field that is offset and tilted.

XXB. Last Updated: 02/01/2016
Todd Elder

Todd Elder

Todd Elder has a deep desire to understand and experience Creation. As a Baraminologist, his current research includes developing the Katagenos Species Concept, the Natanzera Classification System, and the Floral Formula Method of determining Plant Kinds. As an author and speaker, his books and seminar materials are designed to encourage a growing relationship with the Creator.
Todd Elder

Latest posts by Todd Elder (see all)

Enjoyed this article ? --> Share it .

If you appreciate this information, please consider donating
to help defray the costs of this website and ongoing research.