| Page |
Location |
Original |
Revision |
Date Posted |
| 268 |
par. 1, lines 7–9 |
"Electrons move from the negative lead electrode to the positive lead oxide electrode." |
"Electrons move from the positive lead oxide electrode to the negative lead electrode." |
14-Aug-2000 |
| 268 |
par. 2, line 3 |
"It consists of..." |
"One type consists of..." |
14-Aug-2000 |
| 268 |
par. 2, line 5 |
"An electric current is..." |
"A potential difference is..." |
14-Aug-2000 |
| 268 |
par. 2, lines 8–9 |
"...increases, more electricity is generated." |
"...increases, the potential difference increases." |
14-Aug-2000 |
| 268 |
Fig. 11.14, labels for art |
labels:
"Iron wire"
"Ammeter"
"Copper wire" |
labels changed to:
"Copper wire"
"Voltmeter"
"Iron wire" |
14-Aug-2000 |
| 276 |
par. 4, line 8 |
"...amount of current..." |
"...amount of voltage..." |
14-Aug-2000 |
| 288 |
Fig. 12.2, caption, line 2 |
"...poles with unlike charges are brought..." |
"...unlike poles are brought..." |
14-Aug-2000 |
| 290 |
Fig. 12.5, bottom left text box, line 2 |
"...south pole is to the west..." |
"...south pole is to the north..." |
14-Aug-2000 |
| 297 |
col. 1, par. 1, lines 4–5 |
"...such as voltmeters, ammeters, and galvanometers..." |
"...such as ammeters and galvanometers..." |
14-Aug-2000 |
| 298 |
par. 1, line 4 |
"...kilometers per kilowatt." |
"...kilometers per kilowatt-hour." |
14-Aug-2000 |
| 309 |
par. 2, lines 2–7 |
"...of electric currents. You know that electric current is moving electrons. Electronics uses electric current to carry information....Electric current is controlled..." |
"...of electrons. Electronics uses electric current and voltage to carry information....Electric current and voltage are controlled..." |
14-Aug-2000 |
| 312 |
par. 2, lines 3–5 |
"The elements germanium and silicon have crystal structures that cause them to act like diodes....through these elements..." |
"Germanium and silicon semiconductors have crystal structures that can be used to make diodes....through these devices..." |
14-Aug-2000 |
| 312 |
par. 3, lines 7–8 |
"...it becomes slightly positively charged. This is called..." |
"...it is called..." |
14-Aug-2000 |
| 316 |
Fig. 13.9, middle text box ("The diaphragm...") |
The text box does not have a pointer pointing to the art. |
New Figure 13.9 art |
14-Aug-2000 |
| 316 |
Fig. 13.9, far right text box ("The vibrating...") |
Text box pointer points to the transmitter end of the phone. |
New Figure 13.9 art |
14-Aug-2000 |
| 317 |
par. 3, line 5 |
"A resistor in the CD..." |
"A component in the CD..." |
14-Aug-2000 |
| 318 |
par. 2, lines 2–3 |
"...CD players have an extra track....This extra track helps to keep..." |
"...CD players scan an extra track....This helps to keep..." |
14-Aug-2000 |
| 322 |
Fig. 13.13, caption, lines 2–3 |
"What kind of material replaced..." |
"What device replaced..." |
14-Aug-2000 |
| 327 |
Concept Summary, 13.1 Electronic Devices, bullet 1, line 1 |
"...use electric current..." |
"...use electric current and voltage..." |
14-Aug-2000 |
| 328 |
Check Your Knowledge, #15 |
"Electronics uses current as a power source." |
"Electronics uses current and voltage as power sources." |
14-Aug-2000 |
| 336 |
Fig. 14.1, caption, line 2 |
"...angles to the medium." |
"...angles to the motion of the medium." |
14-Aug-2000 |
| 337 |
par. 5, line 9 |
"...compressions that..." |
"...compressions and rarefactions that..." |
14-Aug-2000 |
| 343 |
par. 1, lines 6–9 |
"Compressions and crests indicate the location of maximum energy in the wave. Rarefactions and troughs indicate locations of lowest energy." |
Delete these sentences. |
14-Aug-2000 |
| 345 |
par. 2, last line |
"...through a medium." |
"...through a uniform medium." |
14-Aug-2000 |
| 347 |
Check and Explain, #2 |
"...20 Hz and a wavelength of 50 km." |
"...1 Hz and a wavelength of 7 km." |
14-Aug-2000 |
| 357 |
Develop Your Skills, #1, table, col. 2, row 4 |
"990" |
"1190" |
14-Aug-2000 |
| 357 |
Develop Your Skills, #1, table, col. 3, rows 2–4 |
"1.5"
"1.2"
"1.1" |
"0.46"
"0.35"
"0.29" |
14-Aug-2000 |
| 360 |
par. 2, line 5 |
"...a compression indicates..." |
"...either indicates..." |
14-Aug-2000 |
| 360 |
par. 2, line 8 |
"...have large compressions." |
"...have large compressions and rarefactions." |
14-Aug-2000 |
| 361 |
par. 2, last line |
"...no matter in outer..." |
"...very little matter in outer..." |
14-Aug-2000 |
| 365 |
par. 3, last line |
"...your eardrum will vibrate more." |
"...higher energy waves vibrate your inner ear." |
14-Aug-2000 |
| 367 |
Table 15.2, col. 1, last row |
"Falling leaves" |
"Rustle of leaves" |
14-Aug-2000 |
| 369 |
Fig. 15.9, text under art on right, line 2 |
"...waves are farther apart and reach the girl later." |
"...waves reaching the girl are farther apart." |
14-Aug-2000 |
| 370 |
Fig. 15.10 |
Wave pattern for the flute is above the wave pattern for the saxophone. |
Switch the wave patterns. (Wave pattern under flute is now under sax; wave pattern under sax is now under flute.) |
14-Aug-2000 |
| 374 |
par. 3, line 5 |
"...350 to 400 Hz..." |
"...350 to 450 Hz..." |
14-Aug-2000 |
| 391 |
par. 3, line 4 |
"Harmony occurs when three..." |
"Harmony occurs when two..." |
14-Aug-2000 |
| 391 |
Fig. 16.6 caption |
"The notes on the top...The notes on the bottom staff are a harmony..." |
"The top notes on the top...The bottom notes on the top staff and most of the notes on the bottom staff make up a harmony..." |
14-Aug-2000 |
| 398 |
par. 4, lines 3–6 |
"The transducer has a quartz or ceramic disk that can be charged with electricity. When charged, the disk vibrates very rapidly." |
"The transducer has a quartz or ceramic disk that vibrates rapidly when an electric field is applied to it." |
14-Aug-2000 |
| 400 |
Fig. 16.10, bottom left text box, line 1 |
"If it takes 17 s..." |
"If it takes 7 s..." |
14-Aug-2000 |
| 405 |
Concept Summary, 16.3 Sound Technology, bullet 4, line 2 |
"...dolphins, bats, and moths for..." |
"...dolphins and bats for..." |
14-Aug-2000 |
| 411 |
par. 3, line 3 |
"...such as violet light,..." |
"...such as ultraviolet light,..." |
14-Aug-2000 |
| 411 |
par. 3, last line |
"...strikes a photoelectric metal." |
"...strikes a photosensitive metal." |
14-Aug-2000 |
| 413 |
Table 17.1, col. 4, row 4 |
"1 min 20 s" |
"1.28 s" |
14-Aug-2000 |
| 413 |
Table 17.1, col. 4, row 6 |
"5 h 20 s" |
"5 h 20 min" |
14-Aug-2000 |
