Leaderboard
727 things · 153 votes cast · add yours
All | Arts | Biology and health sciences | Everyday life | Geography | History | Mathematics | People | Philosophy and religion | Physical sciences | Society and social sciences | Technology
| # | Thing | Description | Topic | For | Against | Net | |
|---|---|---|---|---|---|---|---|
| 401 |  | Memory card | Electronic data storage device | Technology | 0 | 0 | 0 |
| 402 |  | Merchant ship | Civilian boat or ship that transports cargo or carries passengers for hire | Technology | 0 | 0 | 0 |
| 403 |  | Metallurgy | Field of science that studies the physical and chemical behavior of metals | Technology | 0 | 0 | 0 |
| 404 |  | Metalworking | Process of making items from metal | Technology | 0 | 0 | 0 |
| 405 |  | Microphone | Device that converts sound into an electrical signal | Technology | 0 | 0 | 0 |
| 406 |  | Microscope | Scientific instrument for observing small objects | Technology | 0 | 0 | 0 |
| 407 | Microsoft Windows | Computer operating system | Technology | 0 | 0 | 0 | |
| 408 |  | Microwave oven | Kitchen cooking appliance | Technology | 0 | 0 | 0 |
| 409 |  | Military aircraft | Aircraft designed or utilized for use in or support of military operations | Technology | 0 | 0 | 0 |
| 410 |  | Military engineering | Building and maintaining structures and systems for armies | Technology | 0 | 0 | 0 |
| 411 |  | Military technology | Application of technology for use in warfare | Technology | 0 | 0 | 0 |
| 412 |  | Mir | Soviet/Russian space station (1986–2001) | Technology | 0 | 0 | 0 |
| 413 |  | Mirror | Object that reflects an image | Technology | 0 | 0 | 0 |
| 414 |  | Missile | Self-propelled guided weapon system | Technology | 0 | 0 | 0 |
| 415 |  | Moat | Defensive ditch surrounding a fortification or town | Technology | 0 | 0 | 0 |
| 416 |  | Mobile device | Small, handheld computing device | Technology | 0 | 0 | 0 |
| 417 |  | Mobile phone | Portable device to make telephone calls using a radio link | Technology | 0 | 0 | 0 |
| 418 |  | Modelling clay | Any of a group of malleable substances used in building and sculpting | Technology | 0 | 0 | 0 |
| 419 |  | Monorail | Railway with a single rail or beam | Technology | 0 | 0 | 0 |
| 420 |  | Mortar (weapon) | Artillery weapon that launches explosive projectiles | Technology | 0 | 0 | 0 |
| 421 |  | Motorcycle | Two- or three-wheeled motor vehicle | Technology | 0 | 0 | 0 |
| 422 |  | Musket | Smoothbore muzzle-loaded long gun (firearm) | Technology | 0 | 0 | 0 |
| 423 |  | NASA | American space and aeronautics agency | Technology | 0 | 0 | 0 |
| 424 |  | Nail (fastener) | Sharp object of hard metal used as a fastener | Technology | 0 | 0 | 0 |
| 425 |  | Nanotechnology | Technology with features near one nanometer | Technology | 0 | 0 | 0 |
| 426 |  | Napalm | Gelled incendiary mixture | Technology | 0 | 0 | 0 |
| 427 |  | Natural gas | Gaseous fossil fuel | Technology | 0 | 0 | 0 |
| 428 |  | Natural rubber | Polymer harvested from certain trees | Technology | 0 | 0 | 0 |
| 429 |  | Naval mine | Weapon for use in waters, triggered by the target's approach | Technology | 0 | 0 | 0 |
| 430 |  | Navigation | Process of monitoring and controlling the movement of a craft or vehicle | Technology | 0 | 0 | 0 |
| 431 |  | New York City Subway | Rapid transit system in New York City | Technology | 0 | 0 | 0 |
| 432 |  | Nuclear power | Power generated from nuclear reactions | Technology | 0 | 0 | 0 |
| 433 |  | Nuclear technology | Technology that involves the reactions of atomic nuclei | Technology | 0 | 0 | 0 |
| 434 |  | Nuclear weapon | Technology | 0 | 0 | 0 | |
| 435 |  | Nut (hardware) | Type of fastener with a threaded hole | Technology | 0 | 0 | 0 |
| 436 |  | Object-oriented programming | Programming paradigm based on objects | Technology | 0 | 0 | 0 |
| 437 |  | Office | Room where administrative work is performed | Technology | 0 | 0 | 0 |
| 438 | Oil refinery | Facility that processes crude oil | Technology | 0 | 0 | 0 | |
| 439 |  | Oil well | Well drilled to extract crude oil and/or gas | Technology | 0 | 0 | 0 |
| 440 |  | Open-source software | Software with publicly available source code | Technology | 0 | 0 | 0 |
| 441 |  | Operating system | Software that manages computer hardware resources | Technology | 0 | 0 | 0 |
| 442 |  | Optical disc | Flat, usually circular disc that encodes binary data | Technology | 0 | 0 | 0 |
| 443 |  | Optical fiber | Light-conducting fiber | Technology | 0 | 0 | 0 |
| 444 |  | Optical microscope | Microscope that uses visible light | Technology | 0 | 0 | 0 |
| 445 |  | Optical telescope | Telescope for observations with visible light | Technology | 0 | 0 | 0 |
| 446 |  | Orchard | Intentionally planted trees or shrubs that are maintained for food production | Technology | 0 | 0 | 0 |
| 447 |  | Oscilloscope | Instrument for displaying time-varying signals | Technology | 0 | 0 | 0 |
| 448 |  | Oven | Enclosed chamber for heating objects | Technology | 0 | 0 | 0 |
| 449 |  | Pagoda | Usually religious tower in Asian countries | Technology | 0 | 0 | 0 |
| 450 |  | Paint | Pigment applied over a surface that dries as a solid film | Technology | 0 | 0 | 0 |
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