Section 21.1 Magnets and Magnetic Fields
... 2. Is the following sentence true or false? Magnetic force can be exerted on moving charges, as well as on iron or on another magnet. 3. What did William Gilbert discover when he used a compass to map forces around a magnetic sphere? 4. Circle the letter of each sentence that is true about magnetic ...
... 2. Is the following sentence true or false? Magnetic force can be exerted on moving charges, as well as on iron or on another magnet. 3. What did William Gilbert discover when he used a compass to map forces around a magnetic sphere? 4. Circle the letter of each sentence that is true about magnetic ...
Magnets - history and domain theory note
... In 1820, Hans Oersted discovered that an electric current would deflect a magnetic needle. Using Oersteds' discovery, Ampere magnetized steel needles by placing them in a helix of wire carrying an electric current. Around 1830, Joseph Henry and Michael Faraday independently discovered electromagneti ...
... In 1820, Hans Oersted discovered that an electric current would deflect a magnetic needle. Using Oersteds' discovery, Ampere magnetized steel needles by placing them in a helix of wire carrying an electric current. Around 1830, Joseph Henry and Michael Faraday independently discovered electromagneti ...
Magnetism - schoolphysics
... 7. The next diagram shows a demagnetised bar. (a) Write down TWO ways of magnetising it. (b) Draw a diagram to show how the tiny molecular magnets would be arranged when it was completely magnetised. ...
... 7. The next diagram shows a demagnetised bar. (a) Write down TWO ways of magnetising it. (b) Draw a diagram to show how the tiny molecular magnets would be arranged when it was completely magnetised. ...
Lecture_7_Magnets and Magnetism print
... • Laws of magnetic attraction and repulsion – Like magnetic poles repel each other – Unlike magnetic poles attract each other – Closer together, greater the force ...
... • Laws of magnetic attraction and repulsion – Like magnetic poles repel each other – Unlike magnetic poles attract each other – Closer together, greater the force ...
![L 28 Electricity and Magnetism [5]](http://s1.studyres.com/store/data/001000968_1-9cbbc8bdff99f3eeba0051a7227b6c89-300x300.png)
Magnetism Permanent magnetism Permanent magnets
... Fe3O4) are naturally magnetic • a piece of loadstone will attract bits of iron • a magnet produces a magnetic field in the space around it, just like the Sun has a gravitational field that holds the planets in their orbits • the magnetic field can be visualized with iron filings ...
... Fe3O4) are naturally magnetic • a piece of loadstone will attract bits of iron • a magnet produces a magnetic field in the space around it, just like the Sun has a gravitational field that holds the planets in their orbits • the magnetic field can be visualized with iron filings ...
![L 28 Electricity and Magnetism [5]](http://s1.studyres.com/store/data/001641779_1-6b8ecd251225e13369c1a0c75e33b876-300x300.png)
Electromagnets Answers - Cockeysville Middle School
... 6. Explain the movement of the compass needle after the wire was connected to the circuit. Use prior knowledge about the effects of magnets on compass needles to support your answer. ...
... 6. Explain the movement of the compass needle after the wire was connected to the circuit. Use prior knowledge about the effects of magnets on compass needles to support your answer. ...
magnetism ppt
... Atoms themselves have magnetic properties due to the spin of the atom’s electrons. Groups of atoms join so that their magnetic fields are all going in the same direction These areas of atoms are called “domains” ...
... Atoms themselves have magnetic properties due to the spin of the atom’s electrons. Groups of atoms join so that their magnetic fields are all going in the same direction These areas of atoms are called “domains” ...
L 28 Electricity and Magnetism
... magnets that are randomly aligned. The magnetic field of the coil aligns these little magnets giving a larger field than that of the coil alone. We say that the nail becomes “magnetized”, but the effect is not permanent. ...
... magnets that are randomly aligned. The magnetic field of the coil aligns these little magnets giving a larger field than that of the coil alone. We say that the nail becomes “magnetized”, but the effect is not permanent. ...
Compass
A compass is an instrument used for navigation and orientation that shows direction relative to the geographic cardinal directions, or ""points"". Usually, a diagram called a compass rose, shows the directions north, south, east, and west as abbreviated initials marked on the compass. When the compass is used, the rose can be aligned with the corresponding geographic directions, so, for example, the ""N"" mark on the rose really points to the north. Frequently, in addition to the rose or sometimes instead of it, angle markings in degrees are shown on the compass. North corresponds to zero degrees, and the angles increase clockwise, so east is 90 degrees, south is 180, and west is 270. These numbers allow the compass to show azimuths or bearings, which are commonly stated in this notation.The magnetic compass was first invented as a device for divination as early as the Chinese Han Dynasty (since about 206 BC), and later adopted for navigation by the Song Dynasty Chinese during the 11th century. The use of a compass is recorded in Western Europe and in Persia around the early 13th century.