Leaderboard
10,033 things · 1,900 votes cast · cast a vote
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| # | Thing | Description | Topic | Up/Down/Net | Score ▼ | |
|---|---|---|---|---|---|---|
| 251 |  | Dead reckoning | Means of calculating position | Technology | +0 / -0 / 0 | 0.500000 |
| 252 |  | Defensive wall | Fortification used to protect an area from potential aggressors | Technology | +0 / -0 / 0 | 0.500000 |
| 253 |  | Dentures | Prosthetic devices constructed to replace missing teeth | Technology | +0 / -0 / 0 | 0.500000 |
| 254 |  | Desalination | Removal of salts from water | Technology | +0 / -0 / 0 | 0.500000 |
| 255 |  | Detergent | Surfactants with cleansing properties | Technology | +0 / -0 / 0 | 0.500000 |
| 256 |  | Die casting | Metal casting process | Technology | +0 / -0 / 0 | 0.500000 |
| 257 |  | Diesel engine | Type of internal combustion engine that uses compression to create combustion | Technology | +0 / -0 / 0 | 0.500000 |
| 258 |  | Diffraction grating | Optical component which splits light into several beams | Technology | +0 / -0 / 0 | 0.500000 |
| 259 |  | Digital photography | Photography with a digital camera | Technology | +0 / -0 / 0 | 0.500000 |
| 260 |  | Diode | Two-terminal electronic component | Technology | +0 / -0 / 0 | 0.500000 |
| 261 |  | Dishwasher | Machine that washes dishes automatically | Technology | +0 / -0 / 0 | 0.500000 |
| 262 |  | Dock | Human-made structure involved in the handling of boats or ships | Technology | +0 / -0 / 0 | 0.500000 |
| 263 |  | Domestication | Selective breeding of plants and animals to serve humans | Technology | +0 / -0 / 0 | 0.500000 |
| 264 |  | Door | Movable barrier that allows ingress and egress | Technology | +0 / -0 / 0 | 0.500000 |
| 265 |  | Drainage | Removal of water from an area of land | Technology | +0 / -0 / 0 | 0.500000 |
| 266 |  | Drilling | Cutting process that uses a drill bit to cut a circular hole into the workpiece | Technology | +0 / -0 / 0 | 0.500000 |
| 267 |  | Driving | Operation of a vehicle | Technology | +0 / -0 / 0 | 0.500000 |
| 268 |  | Dynamite | Explosive made using nitroglycerin | Technology | +0 / -0 / 0 | 0.500000 |
| 269 |  | ENIAC | First electronic general-purpose digital computer | Technology | +0 / -0 / 0 | 0.500000 |
| 270 |  | Electric battery | Power supply with electrochemical cells | Technology | +0 / -0 / 0 | 0.500000 |
| 271 |  | Electric generator | Device that converts other energy to electrical energy | Technology | +0 / -0 / 0 | 0.500000 |
| 272 |  | Electric light | Device for producing light from electricity | Technology | +0 / -0 / 0 | 0.500000 |
| 273 |  | Electric motor | Machine that converts electrical energy into mechanical energy | Technology | +0 / -0 / 0 | 0.500000 |
| 274 |  | Electric power distribution | Final stage of electricity delivery to individual consumers in a power grid | Technology | +0 / -0 / 0 | 0.500000 |
| 275 |  | Electric power transmission | Bulk movement of electrical energy | Technology | +0 / -0 / 0 | 0.500000 |
| 276 |  | Electrical cable | Assembly of one or more wires running side by side or bundled | Technology | +0 / -0 / 0 | 0.500000 |
| 277 |  | Electrical connector | Device used to join electrical conductors | Technology | +0 / -0 / 0 | 0.500000 |
| 278 |  | Electrical engineering | Branch of engineering | Technology | +0 / -0 / 0 | 0.500000 |
| 279 |  | Electrical grid | Interconnected network for delivering electricity to consumers | Technology | +0 / -0 / 0 | 0.500000 |
| 280 |  | Electrical wiring | Electrical installation of cabling | Technology | +0 / -0 / 0 | 0.500000 |
| 281 |  | Electricity generation | Process of generating electrical power | Technology | +0 / -0 / 0 | 0.500000 |
| 282 |  | Electrocardiography | Examination of the heart's electrical activity | Technology | +0 / -0 / 0 | 0.500000 |
| 283 |  | Electron microscope | Type of microscope with electrons as a source of illumination | Technology | +0 / -0 / 0 | 0.500000 |
| 284 |  | Elevator | Vertical transport machine | Technology | +0 / -0 / 0 | 0.500000 |
| 285 |  | Embroidery | Art or handicraft of decorating fabric or other materials with needle and thread or yarn | Technology | +0 / -0 / 0 | 0.500000 |
| 286 |  | Encryption | Process of converting plaintext to ciphertext | Technology | +0 / -0 / 0 | 0.500000 |
| 287 |  | Endoscopy | Procedure used in medicine to look inside the body | Technology | +0 / -0 / 0 | 0.500000 |
| 288 |  | Engine | Machine that converts one or more forms of energy into mechanical energy (of motion) | Technology | +0 / -0 / 0 | 0.500000 |
| 289 |  | Engineering | Applied science and research | Technology | +0 / -0 / 0 | 0.500000 |
| 290 |  | Ethernet | Open standard family of wired computer networking protocols | Technology | +0 / -0 / 0 | 0.500000 |
| 291 |  | European Space Agency | European organisation dedicated to space exploration | Technology | +0 / -0 / 0 | 0.500000 |
| 292 |  | Exploration of Mars | Technology | +0 / -0 / 0 | 0.500000 | |
| 293 |  | Explosive | Substance that can explode | Technology | +0 / -0 / 0 | 0.500000 |
| 294 |  | Extrusion | Process of pushing material through a die to create long symmetrical-shaped objects | Technology | +0 / -0 / 0 | 0.500000 |
| 295 |  | Factory | Facility where goods are industrially made, or processed | Technology | +0 / -0 / 0 | 0.500000 |
| 296 |  | Farm | Area of land used to produce food and crops | Technology | +0 / -0 / 0 | 0.500000 |
| 297 |  | Fastener | Device that mechanically joins objects | Technology | +0 / -0 / 0 | 0.500000 |
| 298 |  | Façade | Exterior part of a building, usually the front but not always | Technology | +0 / -0 / 0 | 0.500000 |
| 299 |  | Fertilizer | Substance added to soil to enhance plant growth | Technology | +0 / -0 / 0 | 0.500000 |
| 300 |  | Fiber | Natural or synthetic substance that is significantly longer than it is wide | Technology | +0 / -0 / 0 | 0.500000 |
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