Pages 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 11379 result(s) returned

TALAT Lecture 2204: Design Philosophy
This lecture outlines the requirements on load bearing structures with respect to safety against failure; it introduces the design analysis process with methods of verification and partial safety factors; it describes the characteristic of loads and load combinations on structures; it introduces the subject of load and resistance factors in the verification methods; it describes the basic structural design properties of aluminium alloys versus steel. Some background and experience in structural
Author(s): TALAT,Steinar Lundberg, Hydro Aluminium Structures

License information
Related content

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Keep on learning

Study another free course

There are more than 800 courses on OpenLearn for you to choose from
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

2.2 Bell and Tainter improve the phonograph

If Edison was not willing to continue development of the phonograph then others were. Alexander Graham Bell, who had risen to prominence through his invention of the telephone, took a great interest in recording sounds, even suggesting to Edison that they might collaborate. Edison refused, so Bell set about developing a recording machine with the assistance of his cousin Chichester Bell, a chemical engineer, and Charles Tainter, a scientist and instrument maker. By 1887 Bell and Tainter had s
Author(s): The Open University

License information
Related content

Copyright © 2013 The Open University

Conclusion

This free course provided an introduction to studying Computing & IT. It took you through a series of exercises designed to develop your approach to study and learning at a distance, and helped to improve your confidence as an independent learner.


Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Metric spaces and continuity
This free course contains an introduction to metric spaces and continuity. The key idea is to use three particular properties of the Euclidean distance as the basis for defining what is meant by a general distance function, a metric. Section 1 introduces the idea of a metric space and shows how this concept allows us to generalise the notion of continuity. Section 2 develops the idea of sequences and convergence in metric spaces. Section 3 builds on the ideas from the first two sections to formu
Author(s): Creator not set

License information
Related content

Except for third party materials and otherwise stated (see http://www.open.ac.uk/conditions terms and conditions), this content is made available under a http://creativecommons.org/licenses/by-nc-sa/2

4.5 Endocrine disruptors

Then he was a she…

(Lou Reed, American rock singer)

In 1996, a book called Our Stolen Future was published, bringing to public attention a debate that had been simmering among biologists for some time. Written by Theo Colborn and two colleagues at the World Wildlife Fund (WWF), this book presented the hypothesis that certain industrial chemicals, commonly found as environmental pol
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Structural Integrity: designing against failure
The Kinzua rail viaduct, in Pennsylvania, collapsed when it was hit by a tornado in 2003. First built in 1882 and redesigned 1900, it was at one time the highest bridge in the world. The two video tracks in this album tell the story of the Kinzua catastrophe. The subsequent forensic investigation has cast new light on the failure of Tay rail bridge in Scotland 125 years earlier; with 75 people killed, the worst ever disaster to befall a trestle bridge. This material forms part of the course T3
Author(s): The iTunes U team

License information
Related content

Except for third party materials and otherwise stated (see http://www.open.ac.uk/conditions terms and conditions), this content is made available under a http://creativecommons.org/licenses/by-nc-sa/2

4.2.5 Adverbs

Adverbs modify verbs, adjectives and other adverbs, for example runningquickly, veryclever, quitewell.

Adverbs of manner describe how the action of the verb is being done, for example boldly, graciously, well.

Adverbs of time show when the action of the verb is taking place, for example today, then.

Adverbs of place show where the action of the verb is taking place, for example here.
Author(s): The Open University

License information
Related content

Copyright © 2013 The Open University

2.2.1 Summary

  • Children's developing understanding of gender can be described as a search for certainty.

  • Young children make mistakes about gender illustrating their rigidity and their naive certainty regarding gender.

  • As children's knowledge of gender grows in complexity, basic biological knowledge is added to their social-cultural understanding.

  • Research by Francis illustrating girls' ‘sensible-selfless’ and boys'
    Author(s): The Open University

    License information
    Related content

    Copyright © 2016 The Open University

2012 ESCR Institute: Human Rights and the Social Determinants of Health
In early November 2012, leading scholars, health practitioners, and advocates gathered for a discussion of what a human rights analysis has to offer to the dialogue about health outcomes in this country, and globally.
Author(s): No creator set

License information
Related content

Lord Rees: The World in 2050 and Beyond
In this IPR Public Lecture, Astronomer Royal, life peer and Cambridge scholar Lord Rees surveys the century ahead and the prospects it offers mankind. From AI and robotics to climate change and mass extinction, he makes the case that this is a time of great potential - for success as well as catastrophe. This IPR Public Lecture took place on 9 February 2017.
Author(s): No creator set

License information
Related content

Art History in a Hurry - Mona Lisa
This is a fascinating video about this famous painting. Wouldn't you like to know why she has no eyebrows? (02:17)
Author(s): No creator set

License information
Related content

2.2.2 Salinity, desiccation and biotic interactions on seashores

Tidal movements ensure that sea-shore habitats are, if not covered by seawater for part of each day, at least subject to spray-borne salt and wind. So, even well above the level of high tides, sea-shore organisms need to be more tolerant of salt than most terrestrial organisms. However, salinity (the concentration of salts dissolved in water) is not the only factor affecting sea-shore species. Seaweeds and shelled animals like limpets and barnacles are adapted to living in a highly saline mar
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

2.2 Two factors affecting the distribution of organisms

We will illustrate some of the complexities of interpreting ecological field data by looking at two sets of environmental factors, soil pH and salinity, desiccation and biotic interactions on sea-shores.


Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

1.1 The Earth's crust

On the scale of a human lifetime, these rocks and the landscapes of which they are part can seem static and immutable, at least in a country such as Britain where there are no active volcanoes, and earthquakes are infrequent and fairly small. None the less, coastal erosion and the biological degradation of rocks to form soils are reminders that geological processes are occurring ‘in our own backyard’ and that the Earth's surface is continuously being reshaped.

Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

3.1.6 (F) Creativity

Pupils should appreciate that science is an activity that involves creativity and imagination as much as many other human activities and that some scientific ideas are enormous intellectual achievements. Scientists, as much as any other profession, are passionate and they (and their work) rely on inspiration and imagination.

Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

3.1.5 (E) Historical development of scientific knowledge

Pupils should be taught some of the historical background to the development of scientific knowledge.


Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

2.3 What is a ‘business’?

The vast majority of companies are, indeed, set up and run with ‘commercial objects’ – in other words, they are business enterprises, or ‘undertakings’, set up to trade and make a profit. It is principally in the context of the company as a form of business organisation (or ‘business medium’) that we will be studying it. So, before we start to look in detail at what companies are, it is a good idea to have a grasp of what companies do, which will lead us on to consider why they
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

5.3 Stellar astrophysics

If tunnelling out of nuclei is possible then so is tunnelling in! As a consequence it is possible to trigger nuclear reactions with protons of much lower energy than would be needed to climb over the full height of the Coulomb barrier. This was the principle used by J.D. Cockcroft and E.T.S. Walton in 1932 when they caused lithium-7 nuclei to split into pairs of alpha particles by bombarding them with high-energy protons. Their achievement won them the 1951 Nobel prize for physics. The same p
Author(s): The Open University

License information
Related content

Except for third party materials and/or otherwise stated (see terms and conditions) the content in OpenLearn is released for use under the terms of the Creative Commons Attribution-NonCommercial-Share

Pages 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569