My Engineering Drawing report

Presentations of our senior ND-2-(2013)-THE FINAL PROJECT

ELECTICAL TECHNOLOGY_MAGNETISM

       Definition of magnetism:

       It is the ability of a certain material to attract or repel other materials. It is a force field that acts on some materials only but not on all materials.

       What is a magnet?

       It is an object or material that attracts certain metals, such as iron, nickel and cobalt. It can also attract or repel another magnet. All magnets have North-seeking (N) and South-seeking (S) poles. When magnets are placed near each other, opposite poles attract and like poles repel each other.

      Magnets that forms naturally are called natural magnets, a lode stone, a species of iron ore (Ferrosoferric or magnetic ore, Fe3O4) which has the property of attracting iron and some of its ores, and when suspended, points to the poles.

       A bar or mass of steel or iron to which the peculiar properties of the lodestone have been imparted, called, in distinction from the lodestone, an artificial magnet.

      There are a few materials which are naturally magnetic, and have the potential to become magnets. Some of these materials are:

                              Iron

                              Hematite

                              Magnetite

                              Ionised gas

   Fundamental Properties of Magnets

  I.A magnet attracts iron, its alloy and other magnetic substances.

 II.It has the property of direction, if the magnet is freely suspended, it always points to north and south. 

 III.It has two poles, the pole which indicates towards geographical North is known as North pole and the one which points towards South is known as South pole. 

IV.The pole always exists in PAIR, one isolated pole CANNOT exist. 

V.It induces the opposite polarity as soon as the magnetic materials are brought near it, i.e. it induces the magnetic property onto other. 

VI.LIKE poles will REPEL each other, when brought facing each other. While UNLIKE poles will ATTRACT each other when brought close together.

holiday activities 1st term

 Here are all my activities that i had done during the holiday...i felt very enjoyed that i can spend my time with my family.

We are going for made full of our time by walking around and around and the selecting area was where it is a fish sales at hwa ho,we are here because my younger brother really like fish,so without any choices we just followed up what he want.If not my liltle brother will mad.

Then besides than that,we take our lunch at Azimah Restaurants.

pOster-TUBERCOLUSIS

MATHS PROJECT_CLINOMETER

What is a clinometer?

-  Clinometer is An instrument used for measuring the angle or elevation of slopes.

- They are used by construction workers to measure grade angles, by forestry workers to measure the height of trees, and by movie directors to measure the height of the sun.-
 
-They are also used by satellite antenna installers to find satellites.

MATHS presentation session on 16/02/2013

Here all the presentation was about the trigonometry,its shows how to find the angle of elevation.