According
to Hinduism there are 5 elements and our body is made up of those
5 elements. These 5 elements are given a symbol.
The
5 elements are as given below :
No. |
Elements |
Symbol |
|
|
|
1. |
Infinity |
8 |
|
|
|
2. |
Air |
Spiral |
|
|
|
3. |
Water |
Circle |
|
|
|
4. |
Fire |
Triangle |
|
|
|
5. |
Earth |
Square |
To understand these 5 elements and we have to understand the concepts
of Magnetism and how it is related to our Earth's Magnetic Field.
The
reason why a compass works is more interesting. It turns out that
you can think of the Earth as having a gigantic bar magnet buried
inside. In order for the north end of the compass to point toward
the North Pole, you have to assume that the buried bar magnet has
its south end at the North Pole, as shown in the diagram. If you
think of the world this way, then you can see that the normal "opposites
attract" rule of magnets would cause the north end of the compass
needle to point toward the south end of the buried bar magnet. So
the compass points toward the North Pole.
To be completely accurate, the bar magnet does not run exactly along
the Earth's rotational axis. It is skewed slightly off center. This
skew is called the declination, and most good maps indicate what
the declination is in different areas (since it changes a little
depending on where you are on the planet).
The magnetic field of the Earth is fairly weak on the surface. After
all, the planet Earth is almost 8,000 miles in diameter, so the
magnetic field has to travel a long way to affect compass. That
is why a compass needs to have a light weight magnet and a frictionless
bearing. Otherwise, there just isn't enough strength in the Earth's
magnetic field to turn the needle.