Vital articles is a list of subjects for which Wikipedia should have corresponding high-quality articles. It serves as a centralized watchlist to track the status of Wikipedia's most essential articles. This is one of the sub-lists of the fifty thousand article Vital articles/Level 5 and is currently under construction.
Articles are labelled as:
- Featured articles
- Former featured articles
- A-class articles
- Good articles
- Delisted good articles
- Failed good article nominees
- B-class articles
- C-class articles
- Start-class articles
- Stub-class articles
- List-class articles
- Unassessed articles
The progress bar is auto-updated via category count, and the symbols and article counts are updated daily by User:cewbot. Please read the FAQ before modifying the article list.
Total articles: 3,150/3,150
General (85 articles)
- Technology (Level 2)
- Invention
- Innovation
- Applied science
- Research and development
- Technology and society
- Technological determinism
- Technology life cycle
- Technology adoption life cycle
- Problem solving
- Miniaturization
- Scientific instrument
- Technology assessment
- Technology transfer
- Appropriate technology
Creativity, Vocational education, Intellectual property and Patent are listed in the Society and Social Sciences section; Industrial design in the Arts section.
For history of technology, see History#History of science and technology section.
Engineering (70 articles)
Basics (18 articles)
- Engineering (Level 2)
- Nanotechnology (Level 4)
- Nuclear technology (Level 4)
- Technical drawing (Level 4)
- Engineering ethics
- Risk analysis
- Engineering management
- Engineering design process
- Computer-aided design
- Engineering economics
- Engineering statistics
- Engineering research
- Reverse engineering
- Engineering studies
Disciplines (52 articles)
- Agricultural engineering
- Applied mechanics
- Biological engineering
- Ceramic engineering
- Chemical engineering (Level 4)
- Civil engineering (Level 3)
- Electrical engineering (Level 4)
- Energy engineering
- Engineering physics
- Industrial engineering (Level 4)
- Mechanical engineering (Level 3)
- Military engineering (Level 4)
- Sanitary engineering
- Security engineering
- Software engineering (Level 4)
- Structural analysis
- Systems engineering
Agriculture (235 articles)
See Agriculture in the Society category; also see History of Agriculture and related articles under History, or the Everyday life category for basic agricultural products
Basics (11 articles)
Academic Disciplines (11 articles)
- Agricultural science (Level 4)
- Agricultural chemistry
- Agricultural economics
- Agricultural philosophy
- Agricultural soil science
- Agroecology
- Agricultural policy
- Agricultural geography
- Agricultural education
- Agrometeorology
- Also see Agricultural engineering in the Engineering section
Forms (56 articles)
Agriculture (39 articles)
- Beekeeping (Level 4)
- Cuniculture
- Dairy (Level 4)
- Dryland farming
- Desert farming
- Heliciculture
- Rainfed agriculture
- Extensive farming (Level 4)
- Gardening (Level 4)
- Intensive farming (Level 4)
- Mechanised agriculture
- Orchard (Level 4)
- Organic farming (Level 4)
- Genetically modified crops
- Sustainable agriculture (Level 4)
- Pastoral farming
- Subsistence agriculture (Level 4)
- Urban agriculture (Level 4)
- Pastoralism
- Shifting cultivation
- Regenerative agriculture
- Animal-free agriculture
- Intensive animal farming
- Free range
- Hydroponics
- Sericulture
- Viticulture
- Fungiculture
- Olericulture
- Slash-and-burn
- Vertical farming
- Polyculture
- Sharecropping
- Tenant farming
- Forest gardening
Aquaculture (17 articles)
- Aquaculture (Level 4)
- Mariculture
- Algaculture
- Aquaculture of giant kelp
- Fish farming
- Freshwater prawn farming
- Geoduck aquaculture
- Integrated multi-trophic aquaculture
- Marine shrimp farming
- Offshore aquaculture
- Organic aquaculture
- Raceway
- Scallop aquaculture
- Seaweed farming
Pest and disease control (25 articles)
- Aerial application
- Acaricide
- Agrochemical
- Agent Orange
- Aldrin
- Biological pest control
- Chemosterilant
- DDT
- Defoliant
- Fumigation
- Fungicide
- Herbicide
- Insecticide
- Integrated pest management
- Lindane
- Malathion
- Methoxychlor
- Pest
- Pesticide (Level 4)
- Rodenticide
- Scarecrow
- Smother crop
- Soil steam sterilization
- Tetraethyl pyrophosphate
- Toxaphene
Buildings and infrastructure (26 articles)
- Apiary
- Barn (Level 4)
- Farm (Level 4)
- Garden (Level 3)
- Fishery
- Fish hatchery
- Granary (Level 4)
- Grain elevator
- Greenhouse
- Orangery
- Paddy field
- Plant nursery
- Raised field
- Seedbed
- Silo (Level 4)
- Stable (Level 4)
- Terrace
- Ranch
Animal husbandry (21 articles)
- Animal husbandry (Level 3)
- Animal slaughter
- Breed (Level 4)
- Culling
- Domestication (Level 3)
- Goat farming
- Animal feed
- Livestock (Level 4)
- Pig farming
- Poultry farming
- Selective breeding (Level 4)
- Sheep farming
- Slaughterhouse
- Antibiotic use in livestock
Agronomy (29 articles)
Basics (4 articles)
Agronomical techniques (15 articles)
- Nutrient management
- Fertilizer (Level 3)
- Harvest (Level 4)
- Irrigation (Level 4)
- Tillage (Level 4)
- Silage
- Sowing
- Postharvest
Soil and Soil management (10 articles)
See "Pedology" in Earth Science
- Beneficial organism
- Cover crop
- Crop rotation
- Mulch
- Nitrogen fixation
- Norfolk four-course system
- No-till farming
- Three-field system
- Soil salinity control
Horticulture (22 articles)
- Horticulture (Level 4)
- Espalier
- Floriculture
- Grafting
- Layering
- Plant propagation
- Pollarding
- Pollination management
- Pruning
- Smudge pot
- Topiary
- Transplanting
- Basal shoot
- Pomology
- Companion planting
- Genetically modified tree
- Indigenous horticulture
- Urban horticulture
- Hardiness
- Drought tolerance
- Tropical horticulture
Hunting and fishing (18 articles)
Trees and Forestry (5 articles)
Agriculture, Labor and Economy (8 articles)
- Community-supported agriculture
- Corporate farming
- Family farm
- Agricultural cooperative
- Working animal
- Agribusiness
- Agricultural marketing
Agriculture and Ecology (3 articles)
Agricultural machinery and tools
See "Agricultural tools" and "Farm and Garden Machinery" in Technology : Machinery and tools
Biotechnology (43 articles)
- Biotechnology (Level 3)
- Genetic engineering (Level 3)
- Recombinant DNA
- Cloning (Level 4)
- Gel electrophoresis (Level 4)
- Polymerase chain reaction (Level 4)
- Western blot
- Cyborg
- Whole genome sequencing
- Tissue engineering
- Biochip
- De-extinction
- Genome editing
- Nuclear transfer
- Pharming
- Biomimetics
- DNA microarray
- Micropropagation
- Biological hazard
- Bioterrorism
- Pharmacogenomics
- Biopharmaceutical
- Genetic testing
- Synthetic biopolymer
- Biomaterial
- Agricultural biotechnology
- Environmental biotechnology
- Bioreactor
- Gene therapy
- Stem-cell therapy
- Antisense therapy
- Organ printing
- Protein engineering
- Activated sludge
- Anaerobic digestion
- Bioleaching
- Biomining
- Somatic fusion
See also : Selective Breeding in Agriculture; Fermentation in Biology
Communication, media, and computing technology (744 articles)
For abstract topics in computer science, see Mathematics: Theoretical computer science (Level 5)
Computing and information technology basics (11 articles)
Computer science (17 articles)
- Computer science (Level 3)
- Artificial intelligence (Level 3)
- Computer architecture (Level 4)
- Computer simulation (Level 4)
- Parallel computing (Level 4)
- Augmented reality
- Mixed reality
- Virtual reality
- Concurrent computing
- Floating-point arithmetic
- Automata theory
- Information visualization
- Real-time computing
- Computer graphics
Computer architecture concepts (27 articles)
Computer security (41 articles)
Computer hardware (76 articles)
- Computer hardware (Level 4)
- Computer (Level 2)
- Booting (Level 4)
- Central processing unit (Level 4)
- Motherboard
- Processor register
- Floating-point unit
- Graphics processing unit
- Arithmetic logic unit
- Digital signal processor
- Bus
- Controller
- Expansion card
- Modem
- Device driver
- Intel High Definition Audio
- Moore's law
- Embedded system
- Real-time clock
- Computer case
- Computer cooling
- Analog computer
- Stored-program computer
- Hardware acceleration
User interface (24 articles)
Computer software (36 articles)
- Software (Level 4)
- Application software
- Database (Level 4)
- Mobile app
- Open-source software (Level 4)
- Spreadsheet (Level 4)
- System software
- Web application
- Web browser (Level 4)
- Word processor (Level 4)
- Desktop publishing
- Plug-in
- POSIX
- Input method
Operating systems (16 articles)
- Firmware
- Operating system (Level 4)
- Virtual machine
- Kernel
- Job
- Task
- Thrashing
- Thread
- Preemption
- Process
- Computer multitasking
- Scheduling
- System call
- Time-sharing
- Working set
Utility software (2 articles)
Data storage and memory (76 articles)
For units of information (bit, byte, megabyte, etc.), see Physical sciences/Basics and measurement
- Computer file (Level 4)
- Backup
- Barcode (Level 4)
- File system (Level 4)
- Directory
- Filename extension
- Data storage (Level 4)
- RAID
- Disk partitioning
- Computer memory
- Binary file
- Text file
File format (26 articles)
- File format
- Archive file
- Document file format
- Image file format
- Audio coding format
- Video coding format
- Container format
Volatile memory (5 articles)
Non-volatile memory (23 articles)
Networks (68 articles)
- Computer network (Level 4)
- OSI model
- Email (Level 4)
- Ethernet (Level 4)
- Router (Level 4)
- Routing
- Wi-Fi (Level 4)
- Bluetooth
- Cellular network
- Server
- Client–server model
- Network topology
- Network switch
- Network packet
- Network interface controller
- Node
- Internet of things
- Wireless mesh network
- Content delivery network
- Private network
- Subnetwork
- Tunneling protocol
- Proxy server
- Reverse proxy
Internet (40 articles)
For Internet culture, see Society and social sciences/Culture#Internet medium
- Internet (Level 3)
- ARPANET
- CSS
- Communication protocol
- Common Gateway Interface
- File Transfer Protocol
- Hashtag
- HTML (Level 4)
- Hypertext Transfer Protocol (Level 4)
- Online chat
- Internet protocol suite (Level 4)
- Internet service provider
- Peer-to-peer file sharing
- Social media (Level 4)
- Web 2.0
- Search engine (Level 4)
- Tor
- Website (Level 4)
- World Wide Web (Level 4)
Software development (122 articles)
General (66 articles)
- Software development
- Software prototyping
- Reusability
- Software portability
- Transparency
- Library
- Formal specification
- Formal verification
- Software design
- Abstraction
- Variable
- Function (computer programming)
- Pointer
- Recursion
- Iteration
- Computer programming (Level 4)
- Flowchart
- Source code
- Bytecode
- Object code
- Executable
- Parameter
- Collation
- Universal Product Code
- Character encoding (Level 4)
- Error correction code
- Compiler (Level 4)
- Interpreter
- Control flow
- Macro
- Regular expression
- Calling convention
- Programming language (Level 4)
- Programming paradigm (Level 4)
- API
- Software testing
- Software bug
- Debugging
- Application checkpointing
- Exception handling
- Version control
- Software maintenance
- Software documentation
Programming languages (42 articles)
- Syntax
- Metasyntax
- Backus–Naur form
- Type conversion
- Delimiter
- Operator overloading
- Language binding
- Low-level programming language
- High-level programming language
- Shading language
- R (programming language)
Data modeling languages (1 article)
Markup languages (1 article)
Scripting languages (6 articles)
"Historical" languages (7 articles)
Artificial intelligence concepts (14 articles)
- AI alignment
- Artificial general intelligence
- Computer chess
- Computer Go
- Existential risk from artificial general intelligence
- Machine learning
- Natural language processing
- Artificial neural network
- Philosophy of artificial intelligence
- Technological singularity
- Turing test
- Weak artificial intelligence
Other media and communication technology (96 articles)
See also Arts: Literature; Society: Mass media
Physical and analog media are also included here
- Broadcasting (Level 3)
- Communications satellite (Level 4)
- Display device
- Ebook
- Image (Level 4)
- Image scanner (Level 4)
- Mail (Level 3)
- Polygraph
- Portable media player
- Printing (Level 3)
- QR code
- Radio (Level 3)
- Sound recording and reproduction (Level 4)
- Speech synthesis (Level 4)
- Telecommunications (Level 3)
- Television (Level 3)
- Typewriter (Level 4)
- Video (Level 3)
- Digital video recorder
Specific hardware (45 articles)
See also video game hardware section under games for early Home Computers
- Amazon Kindle
- Amiga
- Amstrad CPC
- Arduino
- Asus Eee PC
- Chromebook
- Commodore 64
- Deep Blue
- iMac
- iPad
- iPhone
- iPod
- Mac (computer)
- MSX
- Netbook
- PC-9800 series
- Raspberry Pi
- ThinkPad
- Timex Sinclair 1000
- Walkman
- ZX Spectrum
Early computers (24 articles)
Specific software (67 articles)
Artificial Intelligence (2 articles)
Browsers (5 articles)
Communication (2 articles)
Development (3 articles)
Multimedia (14 articles)
- Adobe Creative Suite
- FFmpeg
- Final Cut Studio
- Foobar2000
- GarageBand
- GIMP
- Inkscape
- iTunes
- Microsoft Paint
- OBS Studio
- VLC media player
Office and Data Management (11 articles)
- Adobe Acrobat
- BitTorrent (software)
- Emacs
- FileZilla
- LibreOffice
- Microsoft Office
- MySQL
- Recuva
- TeX
- WinRAR
- Vim (text editor)
Operating Systems (22 articles)
- Android (Level 4)
- iOS (Level 4)
- DOS
- FreeRTOS
- Mac operating systems (Level 4)
- Microsoft Windows (Level 4)
- Symbian
- Unix (Level 4)
- Unix-like
Science and Engineering (2 articles)
System (3 articles)
Virtualization (3 articles)
Specific websites and other computing services (62 articles)
Cloud server (4 articles)
Multimedia (6 articles)
E-commerence (6 articles)
Portals/Platform sites (6 articles)
Utility (8 articles)
- GitHub
- Google Maps
- Internet Archive
- IMDb
- Rotten Tomatoes
- Urban Dictionary
- Wikipedia (Level 4)
- Wix.com
Science (1 article)
Search Engines (3 articles)
Social network and blogging (28 articles)
Electronics (117 articles)
For topics in electromagnetism, see Physics:Electromagnetism
General (9 articles)
Components (36 articles)
- Electronic component
- Amplifier (Level 4)
- Capacitor (Level 4)
- Diode (Level 4)
- Electrical connector (Level 4)
- Inductor (Level 4)
- Power supply (Level 4)
- Resistor (Level 4)
- Switch (Level 4)
- Transducer
- Transformer (Level 4)
Consumer electronics (3 articles)
Digital logic (17 articles)
Functional circuits (14 articles)
- Bridge circuit
- Electronic oscillator
- Frequency mixer
- Gyrator
- Negative impedance converter
- Power inverter
- Rectifier
- Voltage regulator
Semiconductors (14 articles)
Signal processing (17 articles)
- Signal processing (Level 4)
- Analog-to-digital converter
- Digital-to-analog converter
- Filter (Level 4)
- Multiplexing
- Noise
- Oscilloscope (Level 4)
- Sampling
Signal transmission (7 articles)
Energy (172 articles)
General (5 articles)
Fuel (27 articles)
- Fuel (Level 4)
- Biofuel (Level 4)
- Fossil fuel (Level 3)
- Hydrogen fuel
- Oil refinery (Level 4)
- Nuclear fuel
Heating and cooling (10 articles)
- Heating, ventilation, and air conditioning (Level 4)
- Air conditioning (Level 4)
- Boiler
- Heat exchanger
- Refrigeration (Level 3)
Lighting (12 articles)
Power generation (40 articles)
- Power station (Level 4)
- Hydropower (Level 3)
- Microgeneration
- Nuclear power (Level 3)
- Solar energy (Level 3)
- Thermal power station
- Turbine (Level 4)
- Wind power (Level 3)
Power storage (12 articles)
Power transmission (63 articles)
See also: Electromagnetism and Electromagnetism
- AC power plugs and sockets
- Electric power transmission (Level 4)
- Electric power distribution (Level 4)
- Electrical grid (Level 4)
- Electrical wiring (Level 4)
- Mains electricity
Concepts (24 articles)
- Availability factor
- Automatic generation control
- Backfeeding
- Base load
- Capacity factor
- Demand factor
- Droop speed control
- Economic dispatch
- Demand management
- EROEI
- Fault
- Grid storage
- Grid code
- Home energy storage
- Load factor
- Load-following power plant
- Merit order
- Nameplate capacity
- Peak demand
- Power quality
- Power-flow study
- Repowering
- Utility frequency
- Variability
Electricity transmission and distribution (20 articles)
- Demand response
- Distributed generation
- Dynamic demand
- Electrical busbar system
- Electric power system
- Interconnector
- High-voltage direct current
- High-voltage shore connection
- Load management
- Mains electricity by country
- Power line
- Smart grid
- Substation
- Super grid
- Transmission system operator (TSO)
- Transmission tower
- Utility pole
- Wide area synchronous grid
Electrical protective devices (10 articles)
- Arc-fault circuit interrupter
- Circuit breaker (Level 4)
- Earth-leakage circuit breaker
- Fuse (Level 4)
- Lightning rod
- Residual-current device (GFI)
- Power system protection
- Protective relay
- Numerical relay
- Sulfur hexafluoride circuit breaker
Specific energy structure (3 articles)
See "Dams" section in "Specific infrastructure" for hydroelectric power plants
Industry (199 articles)
See also: "Industry" in Business and economics (Level 4)
General (17 articles)
Food, water and health (26 articles)
- Air purifier
- Bleach (Level 4)
- Desalination (Level 4)
- Detergent (Level 4)
- Laundry (Level 4)
- Food storage
- Sanitation (Level 3)
- Soap (Level 4)
- Sterilization
- Water supply network (Level 4)
Materials (39 articles)
- Abrasive (Level 4)
- BARS apparatus
- Ceramic (Level 4)
- Chemical vapor deposition
- Glass (Level 3)
- Leather (Level 4)
- Mineral wool
- Natural rubber (Level 3)
- Paper (Level 3)
- Plastic (Level 3)
Chemicals (8 articles)
- Adhesive (Level 4)
- Chemical plant (Level 4)
- Composite material (Level 4)
- Explosive (Level 3)
- Lubricant
- Petrochemical (Level 4)
Metallurgy (50 articles)
- Metallurgy (Level 3)
- Extractive metallurgy
- Metalworking (Level 4)
- Anvil
- Bellows
- Bending
- Casting
- Drawing
- Electrical discharge machining
- Extrusion (Level 4)
- Forge
- Forging (Level 4)
- Grinding
- Heat treating (Level 4)
- Laser cutting (Level 4)
- Machining
- Metal fabrication
- Plating
- Precipitation hardening
- Quenching
- Rolling (Level 4)
- Sheet metal
- Sintering
- Soldering (Level 4)
- Steelmaking (Level 4)
- Welding (Level 4)
- Work hardening
Textiles (59 articles)
Fabrics and fibers (19 articles)
- Canvas (Level 4)
- Carbon fibers
- Cotton (Level 3)
- Felt (Level 4)
- Flannel
- Fiber (Level 4)
- Jute (Level 4)
- Lace (Level 4)
- Linen (Level 4)
- Polyester (Level 4)
- Silk (Level 4)
- Thread (Level 4)
- Wool (Level 4)
- Yarn (Level 4)
Other techniques (10 articles)
- Basket weaving (Level 4)
- Crochet (Level 4)
- Dyeing (Level 4)
- Embroidery (Level 4)
- Knitting (Level 4)
- Macramé (Level 4)
- Printing
- Quilting (Level 4)
- Sewing (Level 4)
Spinning (13 articles)
- Hand spinning (Level 4)
- Friction spinning
- Open-end spinning
- Polymer spinning
- Ring spinning
- Spinning frame
- Spinning jenny
- Spinning mule
- Spinning wheel
Weaving (15 articles)
Infrastructure (242 articles)
See also Arts: Architecture
Basics (2 articles)
Building materials (44 articles)
- Brick (Level 4)
- Cement (Level 4)
- Concrete (Level 3)
- Masonry (Level 3)
- Quarry (Level 4)
- Scaffolding (Level 4)
- Adobe
- Construction aggregate
- Clapboard
- Gypsum plaster
- Mortar
- Lath and plaster
- Drywall
- Plaster of Paris
- Rammed earth
- Roof shingle
- Siding
- Stone slab
- Tile
- Wattle and daub
- Wood (Level 3)
Environmental remediation (10 articles)
Infrastructure by type (93 articles)
Architectural elements (20 articles)
- Arch (Level 4)
- Buttress
- Ceiling (Level 4)
- Column (Level 4)
- Dome (Level 4)
- Door (Level 4)
- Elevator (Level 4)
- Façade (Level 4)
- Floor (Level 4)
- Foundation (Level 4)
- Ladder (Level 4)
- Lighting (Level 4)
- Pier
- Roof (Level 4)
- Room (Level 4)
- Stairs (Level 4)
- Vault
- Wall (Level 4)
- Window (Level 4)
Coastal infrastructure (10 articles)
Ceremonial buildings (2 articles)
Commercial buildings (2 articles)
Mixed-use buildings (3 articles)
Residential buildings and housing units (10 articles)
Rooms and spaces (18 articles)
- Attic
- Balcony
- Basement
- Bathroom (Level 4)
- Bedroom (Level 4)
- Courtyard
- Dining room
- Garage (Level 4)
- Hall
- Kitchen (Level 4)
- Laundry room
- Living room
- Lobby
- Porch
- Patio
- Sauna (Level 4)
- Study
- Sunroom
Portable buildings and shelters (2 articles)
Earthworks (3 articles)
Hydraulic infrastructure (11 articles)
- Cistern
- Dam (Level 3)
- Drainage (Level 4)
- Dredging
- Flood control (Level 4)
- Levee (Level 4)
- Reservoir (Level 4)
Transport infrastructure (12 articles)
See also #Transportation section
Specific infrastructure (93 articles)
See "Transportation" and "Energy" section for infrastructure in respective discipline
Dams (31 articles)
- Aswan Dam (Level 4)
- Grand Coulee Dam
- Hoover Dam (Level 4)
- Itaipu Dam (Level 4)
- Tarbela Dam
- Three Gorges Dam (Level 4)
- Akosombo Dam
- Atatürk Dam
- Boegoeberg Dam
- Bratsk Hydroelectric Power Station
- Cahora Bassa
- Cofferdam
- New Croton Dam
- Delta Works
- Tabqa Dam
- Fengman Dam
- Fort Peck Dam
- Grande Dixence Dam
- Guri Dam
- Enguri Dam
- Kariba Dam
- Lomaum Dam
- Mangla Dam
- Nurek Dam
- Oroville Dam
- Rogun Dam
- Ruacana Hydroelectric Power Station
- Sennar Dam
- Sup'ung Dam
- Tibi Dam
- Vajont Dam
Bridges (52 articles)
- Akashi Kaikyo Bridge (Level 4)
- Alcántara Bridge
- Arrábida Bridge
- Arthur Kill Bridge
- Astoria–Megler Bridge
- Auckland Harbour Bridge
- Banpo Bridge
- Bosphorus Bridge
- Bridge of Sighs
- Bridge of the Americas
- Britannia Bridge
- Brooklyn Bridge (Level 4)
- Charles Bridge
- Chengyang Bridge
- Confederation Bridge
- Danyang–Kunshan Grand Bridge
- El Ferdan Railway Bridge
- Forth Bridge
- Gateshead Millennium Bridge
- George Washington Bridge
- Golden Gate Bridge (Level 4)
- Great Belt Bridge
- Great Seto Bridge
- Humber Bridge
- Jiaozhou Bay Bridge
- Kapellbrücke
- London Bridge (Level 4)
- Mackinac Bridge
- Manhattan Bridge
- Mehmed Paša Sokolović Bridge
- Menai Bridge
- Millau Viaduct
- Minneapolis Skyway System
- Pont Alexandre III
- Pont de la Concorde
- Pont du Gard
- Pont Neuf
- Ponte Sant'Angelo
- Ponte Vecchio
- Rainbow Bridge (Niagara Falls)
- Rainbow Bridge (Tokyo)
- Rialto Bridge
- San Francisco–Oakland Bay Bridge
- Si-o-se-pol
- Stari Most
- Sydney Harbour Bridge
- Tacoma Narrows Bridge
- The Iron Bridge
- Tower Bridge
- Trajan's Bridge
- Vasco da Gama Bridge
- Verrazzano-Narrows Bridge
Tunnels (3 articles)
Multi-modal crossings (5 articles)
- Bering Strait crossing
- Chesapeake Bay Bridge–Tunnel
- Hong Kong–Zhuhai–Macau Bridge
- Tokyo Bay Aqua-Line
- Øresund Bridge
Others (2 articles)
Machinery and tools (271 articles)
General (10 articles)
Engines (11 articles)
Hydraulics and pneumatics (25 articles)
Machinery (51 articles)
Farm and garden machinery (16 articles)
- Baler
- Chainsaw (Level 4)
- Combine harvester (Level 4)
- Corn harvester
- Cotton gin (Level 4)
- Cotton picker
- Cultivator (Level 4)
- Irrigation sprinkler (Level 4)
- Lawn mower (Level 4)
- Planter
- Reaper
- Reaper-binder
- Seed drill
- Swather
- Threshing machine
- Transplanter
Household appliances (23 articles)
- Home appliance (Level 4)
- Major appliance
- Barbecue grill
- Clothes dryer (Level 4)
- Dishwasher (Level 4)
- Furnace (Level 4)
- Ironing (Level 4)
- Lock and key (Level 4)
- Microwave oven (Level 4)
- Oven (Level 4)
- Refrigerator (Level 4)
- Sewing machine (Level 4)
- Stove (Level 3)
- Vacuum cleaner (Level 4)
- Washing machine (Level 4)
Industrial machinery (12 articles)
- Centrifuge (Level 4)
- Crane (Level 4)
- Forklift
- Grinding mill
- Machine tool
- Potter's wheel (Level 4)
- Trip hammer
Mechanisms (63 articles)
Flexible components (16 articles)
Rigid components (21 articles)
Simple mechanisms (25 articles)
Tools (111 articles)
Agricultural tools (15 articles)
- Archimedes' screw (Level 4)
- Flail
- Grain cradle
- Harrow (Level 4)
- Hoe (Level 4)
- Machete (Level 4)
- Mattock
- Pitchfork
- Plough (Level 4)
- Rake (Level 4)
- Roller
- Scythe
- Sickle (Level 4)
- Shadoof
- Shovel (Level 4)
Artist's and drafting tools (20 articles)
- Compass
- Drafting machine
- Drawing board
- Easel
- Eraser
- French curve
- Ink (Level 4)
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Containers (18 articles)
- Container (Level 4)
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Hand tools (15 articles)
- Adze
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- Drilling (Level 4)
- Hammer (Level 4)
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Measuring instruments (20 articles)
Surveying tools (20 articles)
Medical technology (17 articles)
Diagnostic technologies (4 articles)
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- Medical imaging (Level 3)
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- Radiography (Level 4)
Devices (3 articles)
Techniques (2 articles)
Transport (2 articles)
Military technology (303 articles)
General (8 articles)
Countermeasures (27 articles)
Armour (11 articles)
Fortification (14 articles)
Melee weapons (40 articles)
Knives (11 articles)
- Assisted-opening knife
- Bayonet (Level 4)
- Knife (Level 3)
- Dagger (Level 4)
- Fighting knife
- Hunting knife
- Pocketknife
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Polearms (8 articles)
Swords (12 articles)
- Sword (Level 4)
- Claymore
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- Dao
- Gladius
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- Rapier (Level 4)
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Ranged weapons (107 articles)
Archery (11 articles)
Artillery (13 articles)
Firearms (65 articles)
Ammunition (15 articles)
Mechanisms (19 articles)
Specific cartridges (2 articles)
Specific firearms (11 articles)
- AK-47
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Missiles (11 articles)
Explosive weapons (15 articles)
- Bomb (Level 4)
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Incendiary weapons (5 articles)
Maneuver (9 articles)
Military aviation (45 articles)
- Military aviation
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Specific aircraft (19 articles)
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Less-lethal weapons (15 articles)
- Non-lethal weapon
- Active Denial System
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Weapon of mass destruction (12 articles)
For units of time (hour, day, etc.), see Physical sciences – Measurement. For maps and cartography, see Geography – Physical geography.
- Navigation (Level 3)
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- Dead reckoning (Level 4)
- Gyroscope (Level 4)
- Satellite navigation (Level 4)
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- Sonar (Level 4)
Timekeeping (47 articles)
Calendars (8 articles)
Clocks (13 articles)
- Alarm clock
- Atomic clock (Level 4)
- Digital clock
- Clock face
- Hourglass
- Pendulum clock
- Quartz clock
- Sundial (Level 4)
- Watch (Level 4)
- Water clock
Name of months (12 articles)
Name of week days (8 articles)
Optical technology (57 articles)
Optical components (14 articles)
- Lens (Level 3)
- Anti-reflective coating (Level 4)
- Collimator
- Diffraction grating (Level 4)
- Mirror (Level 4)
- Optical fiber (Level 4)
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- Polarizer (Level 4)
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Optical instruments (15 articles)
- Autocollimator
- Binoculars (Level 4)
- Glasses (Level 4)
- Interferometry (Level 4)
- Loupe
- Magnifying glass
- Microscope (Level 3)
- Periscope
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Lasers (9 articles)
Photography (19 articles)
Astronomical technology (72 articles)
Telescope (68 articles)
- Telescope (Level 3)
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Space-based observatories (15 articles)
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Ground-based observatories (26 articles)
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Space (68 articles)
Basics (16 articles)
- Spaceflight (Level 3)
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Crewed vehicles (11 articles)
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Unmanned spacecraft (18 articles)
- Sputnik 1 (Level 4)
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- Luna 2
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- Mariner 2
- Luna 9
- Voyager program (Level 4)
- Pioneer program
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- MESSENGER
Rovers (7 articles)
Transportation (455 articles)
Basics (19 articles)
Ground transport (161 articles)
Concepts of ground transport (22 articles)
- Road transport
- Driving (Level 4)
- Tire (Level 4)
- Storage and maintenance
- Transport hub
Road infrastructure (26 articles)
For bridges and tunnels, see transport infrastructure in #Infrastructure section.
Motorized road transport (54 articles)
- Auto rickshaw
- Bus (Level 4)
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- Off-road vehicle
- Shared transport
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Rail and cable transport (27 articles)
- Rail transport (Level 3)
- Train (Level 4)
- Cable transport (Level 4)
- High-speed rail (Level 4)
- Tram (Level 4)
- Rapid transit (Level 4)
Animal-powered transport (7 articles)
Human-powered transport (15 articles)
Specific-purpose transportation (10 articles)
For medical transport, see Medical section
For military watercraft, see Military technology. For pier and port, see coastal infrastructure.
- Ship (Level 3)
- Watercraft
- Buoy
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- Hospital ship
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- Hydrofoil
- Icebreaker
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- Multihull
- Naval architecture
- Outrigger
- Passenger ship (Level 4)
- Personal watercraft
- Riverboat (Level 4)
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- Sailboat
- Sailing ship (Level 4)
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- Scuba set
- Snorkel
- Shipbuilding (Level 4)
- Steamboat (Level 4)
- Steamship
- Submersible
- Tanker (Level 4)
- Tugboat
Specific piers and ports (13 articles)
Aviation (116 articles)
Specific aircraft (32 articles)
For military aircraft, see Military technology
- Airbus A300
- Airbus A320 family
- Airbus A330
- Airbus A340
- Airbus A350
- Airbus A380
- Antonov An-225 Mriya
- Boeing 707
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- McDonnell Douglas DC-9
- McDonnell Douglas DC-10
- Mil Mi-8
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- Wright Flyer
Airports (14 articles)
- Hartsfield–Jackson Atlanta International Airport
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- O'Hare International Airport
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- Heathrow Airport
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- Charles de Gaulle Airport
- Haneda Airport
- Shanghai Pudong International Airport
- Sheremetyevo International Airport
- Indira Gandhi International Airport
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- Ted Stevens Anchorage International Airport
Specific transportation systems (95 articles)
Ground transportation networks (9 articles)
See Geography/Physical for Maritime transportation network. See Society/Politic and economic for companies that operate transportation networks.
- Intercontinental and transoceanic fixed links
- Arab Mashreq International Road Network
- Asian Highway Network
- Trans-African Highway network
- Trans-European Transport Network
- EuroVelo
- European long-distance paths
- Transcontinental railroad
Rapid transit (67 articles)
Africa (1 article)
Americas (14 articles)
Brazil (2 articles)
Canada (3 articles)
United States (5 articles)
- Bay Area Rapid Transit
- Chicago "L"
- Massachusetts Bay Transportation Authority
- New York City Subway (Level 4)
- Washington Metro
Asia (24 articles)
China (6 articles)
India (5 articles)
Japan (6 articles)
- Hiroshima Electric Railway
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- Osaka Metro
- Sapporo Municipal Subway
- Tokyo Metropolitan Bureau of Transportation
- Tokyo Metro
South Korea (2 articles)
Europe (27 articles)
France (3 articles)
Germany (3 articles)
Italy (2 articles)
Netherlands (2 articles)
Russia (2 articles)
Spain (2 articles)
United Kingdom (2 articles)
Oceania (1 article)
High-speed rail (13 articles)
- Acela
- AVE
- China Railway High-speed
- Eurostar
- Frecciarossa
- Intercity Express
- Korea Train Express
- Railjet
- Shinkansen (Level 4)
- Taiwan High Speed Rail
- TGV
- Thalys
- Sapsan
Railway lines (4 articles)
- Trans-Australian Railway
- Chinese Eastern Railway
- Trans-Mongolian Railway
- Trans-Siberian Railway (Level 4)
Railway services (2 articles)