Changes

==Earth's Magnetic Field==

==Earth's Magnetic Field==

The magnetic field of [[Earth]] is directional nearly north-to-south, although slightly askance, meaning that "magnetic north" is not the same as "true north," and a person who is orienteering must take into account this change of declination, although it is truly only marginally relevant, unless you are close to either pole.<ref>Boy Scout Handbook.</ref>  This field has been decaying, in the time period that measurements have been made, at a rate of about about 5% per century.<ref>K.L. McDonald and R.H. Gunst, 'An analysis of the earth’s magnetic field from 1835 to 1965,’ ESSA Technical Report, IER 46-IES 1, U.S. Govt. Printing Office, Washington, 1967</ref>  This decay suggests that, at some point, the poles will invert. In fact, geological evidence indicates that the magnetic field has reversed many times in the Earth's history.  While the fluctuations are not uniform, reversals seem to take place about every 200,000 years, though the last reversal was about 780,000 years ago.<ref>[https://news.nationalgeographic.com/news/2004/09/earths-magnetic-field-is-fading/]</ref>

The magnetic field of [[Earth]] is directional nearly north-to-south, although slightly askance, meaning that "magnetic north" is not the same as "true north," and a person who is orienteering must take into account this change of declination, although it is truly only marginally relevant, unless you are close to either pole.<ref>Boy Scout Handbook.</ref>  This field has been decaying at a rapid rate of about about 5% per century, which casts doubt on the theory that the [[Earth]] is billions of years old.<ref>K.L. McDonald and R.H. Gunst, 'An analysis of the earth’s magnetic field from 1835 to 1965,’ ESSA Technical Report, IER 46-IES 1, U.S. Govt. Printing Office, Washington, 1967.</ref>  This decay suggests that, at some point, the poles will invert.

Scientists have speculated about the history of Earth's magnetic field.  One group that makes use of the [[Bible]] as a resource for science suggests that the history of the Earth's magnetic field is as depicted to the right.<ref name=answersingenesis>[https://answersingenesis.org/astronomy/earth/the-earths-magnetic-field-and-the-age-of-the-earth/ answersingenesis.org]</ref> The model, created by [[Russell Humphreys]], can be summarised as:

 

One group that makes use of the [[Bible]] as a resource for science suggests that the history of the Earth's magnetic field is as depicted here.<ref name=answersingenesis>[https://answersingenesis.org/astronomy/earth/the-earths-magnetic-field-and-the-age-of-the-earth/ answersingenesis.org]</ref>

The model, created by [[Russell Humphreys]], can be summarized as:

* Creation of the Earth's magnetic field when God created the Earth

* Creation of the Earth's magnetic field when God created the Earth

* The steady decay of the field resumes

* The steady decay of the field resumes

This model suggests the magnetic field of the [[Earth]] must be less than 10,000 years old

This model suggests the magnetic field of the Earth must be less than 10,000 years old.

 

== References ==

== References ==