Describes various kinds of simple machines, showing how they can be made out of easily obtainable objects and detailing experiments that show how they make tasks easier to perform.
| hid | mid | miid | nid | wid | location_code | location | barcode | callnum | dewey | created | updated |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 95746 | 3974388 | 2268 | 18245 | 34881 | LIVE | 285 | T 34846 | 621.8 TOC | 621.8 | 1575485655 | 1709567815 |
| 577000 | 4345678 | 2291 | 18245 | 34881 | WCOW | 477 | T 332904 | 621.8 TOC | 621.8 | 1577459752 | 1709567815 |
| 605102 | 4357267 | 2278 | 18245 | 34881 | WYOC | 516 | WYOC28236 | 620 SIL | 620 | 1577459752 | 1709567815 |
| 706253 | 4450393 | 2317 | 18245 | 34881 | PECO | 368 | PECO61455 | 621.8 TOC | 621.8 | 1579893772 | 1736518457 |
| 1449265 | 5085466 | 2340 | 18245 | 34881 | WEDW | 485 | WEDW035513 | 621.8 TOC | 621.8 | 1581465224 | 1736518457 |
| 1639810 | 5258094 | 2242 | 18245 | 34881 | SPMES | 424 | SPMS037345 | 530 SCI | 530 | 1582575937 | 1709307855 |
| 1789243 | 5393069 | 2436 | 18245 | 34881 | CCES | 136 | CCES037356 | 621.8 TOC | 621.8 | 1582575937 | 1742569409 |
| 1994336 | 5576599 | 2454 | 18245 | 34881 | GRLR | 242 | GRLR025884 | 621.8 TOC | 621.8 | 1582575937 | 1742569409 |
| 2060021 | 5635591 | 2460 | 18245 | 34881 | GRWR | 248 | GRWR081967 | 621.8 TOC | 621.8 | 1582575937 | 1742569409 |
| 2258514 | 5807647 | 1276 | 18245 | 34881 | LIS | 287 | T0025419 | 621.8 TOC | 621.8 | 1615918896 | 1615918896 |
| 3148590 | 6583220 | 1566 | 18245 | 34881 | 15 | 134 | T 1508033 | 621.8 TOC | 621.8 | 1640729255 | 1640729255 |
| 3239228 | 6660055 | 1575 | 18245 | 34881 | 33 | 98 | T 3336976 | 621.8 TOC | 621.8 | 1640729255 | 1640729255 |