| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 5H10.00 | Magnetic Fields | | |
| 5H10.10 | magnetic paper clip arrow | PIRA 500 | |
| 5H10.11 | compass | Er-6 | A compass is used to find poles. |
| 5H10.11 | compass needles & magnet | E-76 | A large compass needle or dip needle is used as an indicator of magnetic field. |
| 5H10.12 | magnetoscope | 32-3.1 | A magnetoscope is constructed by hanging needles from the edge of a small brass disc. |
| 5H10.15 | dip needle | PIRA 500 | |
| 5H10.15 | dip needle | Er-7 | A dip needle is used to show the inclination of the earth's magnetic field. |
| 5H10.15 | dip needle | E-111 | Use a dip needle to find the local direction of the earth's field. |
| 5H10.15 | dip needle | E-6b | A very large dip needle is shown next to the standard catalog size. Check it out. |
| 5H10.15 | dip needle | Disc 19-03 | Turn a compass on its side. Animation. |
| 5H10.20 | Oersted's effect | PIRA 200 | Explore the field around a long wire with a compass needle. |
| 5H10.20 | Oersted's effect | 5H10.20 | Demonstrate Oersted's effect with a compass needle and a long wire carrying a heavy current. |
| 5H10.20 | Oersted's effect | Ei-8 | A compass needle is used to explore the field around a long wire. |
| 5H10.20 | Oersted's effect | E-7b | A compass deflects above and below a current carrying wire. ALSO- jumping wire. |
| 5H10.20 | Oersted's needle | Disc 19-08 | Hold a current carrying wire over a bar magnet on a pivot and the magnet moves perpendicular to the wire. |
| 5H10.22 | Oersted's effect on OH | 31-1.18 | Four compass needles are arrayed around a vertical wire running through plexiglass for use on the overhead projector. |
| 5H10.22 | Oersted's effect on OH | E-7c | Adapting the Oersted effect to the overhead projector. |
| 5H10.23 | Oersted's effect | E-122 | A current of 50 amps is passed through a heavy vertical wire and the field is investigated using a compass needle. |
| 5H10.23 | mag field of current thru electrolyt | E-191 | A compass needle detects the magnetic field from 2 amps flowing in an electrolyte. |
| 5H10.25 | field independent of conductor type | 31-1.19 | A magnetic field produced current in copper, electrolyte, and a gas discharge tube is detected by a large compass needle. |
| 5H10.25 | Oersted's effect | E-121 | A heavy current
from a storage cell is passed through a long wire and a compass needle is
used to investigate the nearby field. Electrolyte or plasma may be substituted
for the wire. |
| 5H10.26 | carrying large currents | 31-1.25 | Use flat braided brass cable instead of copper wire to carry large currents. |
| 5H10.30 | magnet and iron filings | PIRA 200 | Sprinkle iron filings on a glass sheet placed on top of a bar magnet. |
| 5H10.30 | magnet and iron filings on overhead | 5H10.30 | |
| 5H10.30 | field of a magnet | Er-4 | Iron filings are sprinkled on a sheet of plexiglass over a magnet. |
| 5H10.30 | iron filings on the overhead | E-89 | Sprinkle iron filings on a magnet between two glass plates. |
| 5H10.30 | magnetic fields around bar magnets | Disc 19-04 | Sprinkle iron filings on a glass sheet covering a bar magnet. |
| 5H10.31 | particles in oil | AJP 36(11),1015 | A suspension of carbonyl nickel powder in silicon oil is used as an indicator of magnetic field. |
| 5H10.31 | iron filings in glycerine | AJP 38(6),777 | A sandwich of iron filings in glycerine between two glass plates. |
| 5H10.31 | iron filings in glycerin | E-90 | Soft
iron bars extend the poles of a permanent magnet into a projection cell with
iron filings in a equal mixture of glycerin and alcohol. |
| 5H10.32 | iron bars & 83 ton magnet | AJP 41(4),566 | Students gather around a large electromagnet while holding iron bars. |
| 5H10.32 | reply to comment | AJP 42(3),259 | Reply
to the comment on the health hazards of magnetic fields - Field gradient
is 1000 times weaker than exposure that has been studied. |
| 5H10.32 | comment | AJP 42(3),259 | On the health hazards of magnetic fields. |
| 5H10.33 | iron filings on glass plate stack | TPT 3(7),320 | Make a 3-D view of magnetic fields by sprinkling iron filings on a series of stacked glass plates. |
| 5H10.50 | area of contact | PIRA 1000 | |
| 5H10.50 | area of contact | E-97 | One end of a magnet 1 cm in diameter is truncated to .5 cm. The small end lifts a much larger piece of iron than the large one. |
| 5H10.51 | area of contact | E-98 | An electromagnet supports less weight when the face of the ring is against the pole than when the curved edge is. Diagram. |
| 5H10.52 | area of contact | E-99 | A soft iron truncated cone will support less weight when the large end is in contact with the face of an electromagnet. |
| 5H10.55 | gap and field strength | PIRA 1000 | |
| 5H10.55 | gap and field strength | 32-3.23 | Vary the gap of a magnet and measure the field with a gaussmeter. |
| 5H10.60 | shunting magnetic flux | PIRA 1000 | |
| 5H10.60 | shunting magnetic flux | E-108 | Pick up a steel ball with a bar magnet, then slide a soft iron bar along the magnet toward the ball until it drops off. |
| 5H10.61 | magnetic shielding | PIRA 1000 | |
| 5H10.61 | magnetic shielding | Disc 19-20 | Slide sheets of copper, aluminum, and iron between an electromagnet and an acrylic sheet separating nails from the magnet. |
| 5H10.62 | magnetic screening | E-107 | Displace a hanging soft iron bar by attraction to a magnet, then interpose a sheet of iron. |
| 5H10.63 | magnetic shielding | 32-3.6 | A test magnet is used to show the shielding properties of a soft iron tube with various magnetic field generators. |
| 5H10.65 | magnetic screening | PIRA 1000 | |
| 5H10.65 | magnetic screening | E-106 | Hold a magnet above a nail attached to the table by a string, then interpose a sheet of iron. |
| 5H10.65 | magnetic screening | E-105 | Two horizontal
sheets of glass separated by and air space intervene between an electromagnet
and collection of nails being held up. Insert a sheet of iron into the space
and the nails drop. |
| 5H10.75 | Compass in a changing mag field | 29-4.7 | Meiners
places this demonstration in the Capacitors and Dielectrics section. (????)
A compass is placed in the gap of an electromagnet and the field is reversed
at various rates. |
| 5H10.80 | sensitive magnetometer | 31-1.22 | Building and operating a sensitive magnetometer. |