Want this question answered?
i have a saracom magnetic compass & it has big bubble inside. i have to remove bubble.what type of fluid i have to use, compass make: SARACOM model: MC180
Did this at school http://www.madsci.org/experiments/archive/860218908.Es.html
Rub the needle across a magnetic surface...always in the same direction, don't go back and forth. This will magnetise the needle. Then float the needle in a dish of water. And presto you have your own compass
Are you asking what material is a compass needle made from? It that is your question, you need to keep in mind that the material used must have magnetic properties. Research the Iron Triad from the Periodic Table.
Magnetic fields are the reason why atoms make an object magnetic.
The cause is the Chinese invention of the magnetic compass. The effect is the voyage of Zheng He. The invention of the magnetic compass allowed Zheng He to make his voyage.
Iron is magnetic
i have a saracom magnetic compass & it has big bubble inside. i have to remove bubble.what type of fluid i have to use, compass make: SARACOM model: MC180
A compass is a scientific instrument used to locate the north magnetic pole. The magnetic changes in the Earth's core make the north magnetic pole move over time.
To invent something you have to make it. It was invented.
Nothing. That's exactly what a compass does ... as long as it's free to turn, and there are no ferrous metals or other sources of magnetic fields nearby.
Unlike the geographic poles, which are always in the same place, the magnetic poles change location throughout the history of earth. So when using a compass to map or explore the Earth's surface, you need to make a correction for the difference between geographic nor and magnetic north.
Did this at school http://www.madsci.org/experiments/archive/860218908.Es.html
It could not be used because it attracts magnets and a compass is a specialist form of magnet, utilising the magnetic properties of the earth to give a reading. Compass housings are invariably made of brass, aluminium or plastic.
It is magnetic and would throw off your little dial
Unlike the geographic poles, which are always in the same place, the magnetic poles change location throughout the history of earth. So when using a compass to map or explore the Earth's surface, you need to make a correction for the difference between geographic nor and magnetic north.
it allowed european nations to undertake transoceanic voyages without fear of getting lost