COMPASS
A compass is device used to finding directions on the
earth . It is made up of magnetized pointer it is free to
align itself accurately with Earth's magnetic field, which is great
assistance in navigation.It finds the accurate and proper direction of
North South East and West.
A compass can be used in
conjunction with chronometer to provide accurate navigation capability.
This device is great;improved at the
time of trading by traders making travel safer Easier and more efficient.
An early form of compass was invented in China in 271
C.E and is one of four greatest inventions of ancient China.
The
familiar mariner’s compass was invented in Europe around 1300.
What an Compass needs ?
It needs a magnetic
device using needle to indicatethe direction . It is
easy to carry we can carry in our pockets.
The simple way of using
compass is to know the arrow always points in the same direction,
magnetic North Which is roughly similar to true north.
Except in areas of
extreme magnetic declination variance this is enough to protect from
walking in a substantially different or even opposite direction than
excepted over-er short distances.
Compass navigation used in
conjction with map requires a different compass method.To take
map bearing or true to destination with a protector compass the
exact value of the
magnetic declination is place- dependent and varies over time, though
declination is frequently given open the map itself or obtainable on-line
from various sites.
Because the Earth's magnetic field varies at different
latitudes, compasses ate often balanced during manufacture.
Most manufacturers balance
their compass needles for one of Five zones. Ranging. originally, many
compasses were makes only as to the direction of magnetic
north, or to the four cardinal points .
Later, mariner's divided the compass cardinal equally spaced points divided from the cardinal points . The 360-degree system later look hold,which is still in use today
for civilian navigators.
"Compass is one of
the most valuable and useful invention till now".
Conclusion:-Here You get the information regarding one of the Greates Invention Compass .
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