Leaderboard
10,033 things · 1,900 votes cast · cast a vote
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 | Up/Down/Net | Score ▼ | |
|---|---|---|---|---|---|---|
| 551 |  | Sanitation | Public health conditions related to clean water and proper excreta and sewage disposal | Technology | +0 / -0 / 0 | 0.500000 |
| 552 |  | Satellite | Objects intentionally placed into orbit | Technology | +0 / -0 / 0 | 0.500000 |
| 553 |  | Satellite navigation | Use of satellite signals for navigation or geo-spatial positioning | Technology | +0 / -0 / 0 | 0.500000 |
| 554 |  | Satellite television | Broadcasting of television using artificial satellites | Technology | +0 / -0 / 0 | 0.500000 |
| 555 |  | Saturn V | American super heavy-lift expendable rocket | Technology | +0 / -0 / 0 | 0.500000 |
| 556 |  | Scaffolding | Temporary structure used to support a work crew and materials | Technology | +0 / -0 / 0 | 0.500000 |
| 557 |  | Scissors | Hand-operated cutting tool | Technology | +0 / -0 / 0 | 0.500000 |
| 558 |  | Screw | Type of fastener characterized by a thread wrapped around a cylinder core | Technology | +0 / -0 / 0 | 0.500000 |
| 559 |  | Screw mechanism | Mechanism that converts motion, and forces, from rotational to linear | Technology | +0 / -0 / 0 | 0.500000 |
| 560 |  | Scroll | Roll of papyrus, parchment, or paper | Technology | +0 / -0 / 0 | 0.500000 |
| 561 |  | Search engine | Software system for finding relevant information on the Web | Technology | +0 / -0 / 0 | 0.500000 |
| 562 |  | Semiconductor device | Electronic component that exploits the electronic properties of semiconductor materials | Technology | +0 / -0 / 0 | 0.500000 |
| 563 |  | Sewage treatment | Process of removing contaminants from municipal wastewater | Technology | +0 / -0 / 0 | 0.500000 |
| 564 |  | Sewing | Craft of joining fabrics with a needle and thread | Technology | +0 / -0 / 0 | 0.500000 |
| 565 |  | Sewing machine | Machine used to stitch fabric | Technology | +0 / -0 / 0 | 0.500000 |
| 566 |  | Sextant | Tool for angle measurement | Technology | +0 / -0 / 0 | 0.500000 |
| 567 |  | Shinkansen | Japanese high-speed rail system | Technology | +0 / -0 / 0 | 0.500000 |
| 568 |  | Ship | Large watercraft | Technology | +0 / -0 / 0 | 0.500000 |
| 569 |  | Ship of the line | Warship of 17th–19th centuries | Technology | +0 / -0 / 0 | 0.500000 |
| 570 |  | Shipbuilding | Construction of ships and floating vessels | Technology | +0 / -0 / 0 | 0.500000 |
| 571 |  | Shotgun | Firearm loaded with a cartridge of pellets | Technology | +0 / -0 / 0 | 0.500000 |
| 572 |  | Shovel | Tool for digging, lifting, and moving bulk materials | Technology | +0 / -0 / 0 | 0.500000 |
| 573 |  | Sickle | Single-handed agricultural tool | Technology | +0 / -0 / 0 | 0.500000 |
| 574 |  | Signal processing | Field of electrical engineering | Technology | +0 / -0 / 0 | 0.500000 |
| 575 |  | Signal-to-noise ratio | Ratio of the desired signal to the background noise | Technology | +0 / -0 / 0 | 0.500000 |
| 576 |  | Silo | Structure for storing crops | Technology | +0 / -0 / 0 | 0.500000 |
| 577 |  | Simple machine | Mechanical device that changes the direction or magnitude of a force | Technology | +0 / -0 / 0 | 0.500000 |
| 578 |  | Sink | Bowl-shaped plumbing fixture | Technology | +0 / -0 / 0 | 0.500000 |
| 579 |  | Siphon | Device involving the flow of liquids through tubes | Technology | +0 / -0 / 0 | 0.500000 |
| 580 |  | Skyscraper | Tall habitable building | Technology | +0 / -0 / 0 | 0.500000 |
| 581 |  | Sling (weapon) | Ranged weapon to throw projectiles | Technology | +0 / -0 / 0 | 0.500000 |
| 582 |  | Smartphone | Handheld mobile device | Technology | +0 / -0 / 0 | 0.500000 |
| 583 |  | Smelting | Use of heat and a reducing agent to extract metal from ore | Technology | +0 / -0 / 0 | 0.500000 |
| 584 |  | Soap | Substance used for cleaning | Technology | +0 / -0 / 0 | 0.500000 |
| 585 |  | Social media | Virtual online communities | Technology | +0 / -0 / 0 | 0.500000 |
| 586 |  | Software | Instructions a computer can execute | Technology | +0 / -0 / 0 | 0.500000 |
| 587 | Software engineering | Engineering approach to software development | Technology | +0 / -0 / 0 | 0.500000 | |
| 588 |  | Solar cell | Device used to produce electricity from light | Technology | +0 / -0 / 0 | 0.500000 |
| 589 |  | Solar power | Conversion of energy from sunlight into electricity | Technology | +0 / -0 / 0 | 0.500000 |
| 590 |  | Soldering | Process of joining metal pieces with heated filler metal | Technology | +0 / -0 / 0 | 0.500000 |
| 591 |  | Sonar | Acoustic sensing method | Technology | +0 / -0 / 0 | 0.500000 |
| 592 |  | Sound recording and reproduction | Recording of sound and playing it back | Technology | +0 / -0 / 0 | 0.500000 |
| 593 |  | Soviet space program | Space exploration program conducted by the Soviet Union from 1951 to 1991 | Technology | +0 / -0 / 0 | 0.500000 |
| 594 |  | Space Shuttle | Partially reusable launch system and space plane | Technology | +0 / -0 / 0 | 0.500000 |
| 595 |  | Space exploration | Investigation of outer space | Technology | +0 / -0 / 0 | 0.500000 |
| 596 |  | Space station | Habitable artificial satellite | Technology | +0 / -0 / 0 | 0.500000 |
| 597 |  | Spacecraft | Vehicle or machine designed to fly in space | Technology | +0 / -0 / 0 | 0.500000 |
| 598 | Spear | Polearm with a long shaft and pointed head used for thrusting or throwing | Technology | +0 / -0 / 0 | 0.500000 | |
| 599 | Speech synthesis | Artificial production of human speech | Technology | +0 / -0 / 0 | 0.500000 | |
| 600 | Spreadsheet | Computer program for working with tabular data | Technology | +0 / -0 / 0 | 0.500000 |
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