[aerohead]

an example:
1) the diameter of the Sun's photosphere, in miles, is known.
2) any magnetic anomaly escaping from the Sun's 'surface' could be assigned a value of one (1).
3) we know that the distance from Sun to Earth is 93,000,000-miles.
4) if you take one (1) and divide it by 93,000,000 times 93,000,000,you get the strength of the Sun's magnetic disturbance as measure at Earth's upper atmosphere, 93,000,000-miles away.
5) Another way of looking at it is:
* construct a scale sphere the diameter of the Sun's exterior.
* put a dot on that sphere and measure it's diameter.
* now construct a scale model of a sphere, with a radius equal to the distance between Sun and Earth.
* Draw a dot on surface of the new sphere, scaled to the diameter of the Sun's dot.
* Compare the areas of the two dots.
* The magnetic energy of the original small dot will now be diffused over the area of the new, much larger dot.
* If you measure the energy per unit area of the larger dot, you will find that it has fallen off as a proportion equal to the inverse-square law.