A School Electricity
A School Electricity
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In our eReader you can find the full English version of the book. Read A School Electricity Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book A School Electricity
What reading level is A School Electricity book?
To quickly assess the difficulty of the text, read a short excerpt:
124.
Take a long magnetised needle and by thrusting it through a cork arrange it to float vertically in a large trough of water, North Pole upwards. Place a magnet, bar or horse-shoe, nearly level with the surface of the water and close to the floating needle. The needle will move away from the North end of the magnet, trace a curve and finally reach the South end. Note the shape of the path. Repeat the experiment by starting the needle in different places. (Unless the trough is a big one the c...ork will be pulled to the side by the surface tension of the water. ) The path traced by the needle is called a line of force.
This method of tracing lines of force though very simple and easily understood is neither exact nor convenient. A much better method is to use a compass needle.
Consider again the magnet NS (fig. 124): the force on a North Pole at P is in the direction PC. This means that if a small compass were brought up to P, its North Pole would w. 10 146 Elementary Magnetism be pulled in the direction PC, its South Pole would be pushed in the opposite direction, CP.
What to read after A School Electricity?
You can find similar books in the "Read Also" column, or choose other free books by Charles John Leonard Wagstaff to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
124.
Take a long magnetised needle and by thrusting it through a cork arrange it to float vertically in a large trough of water, North Pole upwards. Place a magnet, bar or horse-shoe, nearly level with the surface of the water and close to the floating needle. The needle will move away from the North end of the magnet, trace a curve and finally reach the South end. Note the shape of the path. Repeat the experiment by starting the needle in different places. (Unless the trough is a big one the c...ork will be pulled to the side by the surface tension of the water. ) The path traced by the needle is called a line of force.
This method of tracing lines of force though very simple and easily understood is neither exact nor convenient. A much better method is to use a compass needle.
Consider again the magnet NS (fig. 124): the force on a North Pole at P is in the direction PC. This means that if a small compass were brought up to P, its North Pole would w. 10 146 Elementary Magnetism be pulled in the direction PC, its South Pole would be pushed in the opposite direction, CP.
What to read after A School Electricity?
You can find similar books in the "Read Also" column, or choose other free books by Charles John Leonard Wagstaff to read onlineMoreLess
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