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Concept used in black hole solutions
closed trapped surfaces in 1965. A trapped surface is one where light is not moving away from the black hole. The boundary of the union of all trapped surfaces
Trapped_surface
Alternative of event horizon first suggested by Stephen Hawking
the surface is called trapped. The apparent horizon is the outermost of all trapped surfaces, also called the "marginally outer trapped surface" (MOTS)
Apparent_horizon
Black hole conjecture
Penrose singularity theorem of 1964 it is known that if there is trapped null surface (and some other conditions) then a singularity must form, in 1983
Hoop_conjecture
Bound between quantum information and spacetime geometry
towards the past, to the interior or the exterior. If B is a trapped surface, such as the surface of a star in its final stages of gravitational collapse,
Bousso's_holographic_bound
Use of a device to remotely catch an animal
Animal trapping, or simply trapping or ginning, is the use of a device to remotely catch and often kill an animal. Animals may be trapped for a variety
Trapping
Cave-in and miner rescue in Atacama Region, Chile
men were trapped deep inside. A thick dust cloud caused by the rock fall blinded the miners for as much as six hours. Initially, the trapped miners tried
2010_Copiapó_mining_accident
Deviation from the normal change of an atmospheric property with altitude
form an additional barrier to air circulation. During a severe inversion, trapped air pollutants form a brownish haze that can cause respiratory problems
Inversion_(meteorology)
Physical phenomenon
wave's transmission. Other types of surface wave are the trapped surface wave, the gliding wave and Dyakonov surface waves (DSW) propagating at the interface
Surface_wave
Topics referred to by the same term
first-person shooter Star Wars Jedi Knight: Dark Forces II Marginally outer trapped surfaces - black hole boundaries in General Relativity Music of the Sun, an
MOTS
Region in spacetime from which nothing can escape
PMC 5253930. PMID 28163644. S2CID 16566181. Senovilla, José M. M. (2011). "Trapped surfaces". International Journal of Modern Physics D. 20 (11): 2139–2168. arXiv:1107
Event_horizon
Plants that consume animals
Carabid beetle (Lebia grandis) trapped by Sarracenia purpurea Muscoid fly trapped by Dionaea muscipula Leaf beetle (Paria) trapped by Dionaea muscipula Limoniid
Carnivorous_plant
Species of carnivorous plant
"sensitive hairs") on their inner surfaces. Additionally, when an insect or spider touches one of these hairs, the trap prepares to close, only fully enclosing
Venus_flytrap
Subgenre of American hip-hop
2015, trap music once again surfaced to the top of mainstream music charts as New Jersey rapper Fetty Wap's hit single "Trap Queen" peaked at number two
Trap_music
Specialized field of wilderness rescue
years before cavers returned him to the surface in 1954. Neil Moss in Peak Cavern, England in 1959. Trapped in a narrow tunnel, he was suffocated by
Cave_rescue
Genus of cephalopods
innovation unique to the genus. It is used as a brood chamber, and to trap surface air to maintain buoyancy. It was once speculated that argonauts did not
Argonaut_(animal)
Diagram used to represent quantum field theory calculations
quantization of areas: the operator of the area A of a two-dimensional surface Σ should have a discrete spectrum. Every spin network is an eigenstate
Spin_network
Concept in planetary sciences
layers of an adiabatic atmosphere. On airless bodies, the ices trapped inside cold-traps can potentially remain there for geologic time periods, allowing
Cold_trap_(astronomy)
Type of vacuum pump
molecular-weight gases can be trapped. Trapping nitrogen, helium, and hydrogen requires extremely low temperatures (~10K) and large surface area as described below
Cryopump
18th episode of the 9th season of Family Guy
"It's a Trap!" is a direct-to-video special of the animated series Family Guy, which later served as the two-part season finale of the show's ninth season
It's_a_Trap!
Class of echinoderms
help keep the mucus stream in place. The total length of the food-trapping surface may be very large; the 56 arms of a Japanese sea lily, with 24 cm (9 in)
Crinoid
Trap for small animals
move across the terrain), or too large to be trapped (or large enough to escape if trapped). Trappability can also be affected by conditions such as temperature
Pitfall_trap
men trapped 700 meters (2,300 ft) below ground who survived underground for a record 69 days. All 33 men were rescued and brought to the surface on 13
Health issues during the 2010 Copiapó mining accident
Health_issues_during_the_2010_Copiapó_mining_accident
Plant flower structures
The structures of pollination traps can include deep tubular corollas with downward pointing hairs, slippery surfaces, adhesive liquid, attractants (often
Pollination_trap
Device for trapping charged particles
uses a static electric field and static magnetic field. Paul traps are used in trapped ion quantum computers and realizing atomic clocks, including the
Ion_trap
Siege and mine deaths in South Africa in 2024
attempt to force illegal miners to come to the surface and be arrested. The blocking of key shaft exits trapped miners underground, with reports suggesting
Stilfontein_mine_deaths
Subsurface pool of hydrocarbons
until they either seep to the surface or are trapped by a non-permeable stratigraphic trap. They can be extracted from the trap by drilling. The largest natural
Petroleum_reservoir
Animals that feed by straining food from water
delay between closing the mouth and opening the gill flaps, plankton is trapped against the dermal denticles which line its gill plates and pharynx. This
Filter_feeder
Geological structure allowing accumulation of hydrocarbons in a reservoir
the fault surface (such as clay) that also acts to prevent migration. This is known as clay smear. Stratigraphic trap In a stratigraphic trap, the geometry
Petroleum_trap
Animal trap used to catch and kill mice
rodent to trip it; and the larger surface area of the trip increases the probability that the rodent will set off the trap. The exact latching mechanism holding
Mousetrap
2018 international rescue mission in Thailand
In June 2018, a junior soccer team became trapped in Tham Luang Nang Non, a cave system in Chiang Rai province, northern Thailand. Twelve members of the
Tham_Luang_cave_rescue
Melting or otherwise disintegrating ice on open water
contaminants, can be trapped between the crystals when they initially form, and melting will begin at these boundaries due to the trapped contaminants. No
Rotten_ice
Floating buoy attached to a submarine
Once on the surface it can indicate to rescuers the position of the submarine, and may include a telephone for communication with the trapped submariners
Rescue_buoy_(submarine)
Coal mine disaster in Illinois, US
feet below the surface of the surrounding prairie. Water poured into the mine and the main shaft was quickly inaccessible to the trapped miners. Since
1883_Diamond_Mine_Disaster
American cave explorer (1887–1925)
1887 – c. February 13, 1925) was an American cave explorer who became trapped and died in what became Mammoth Cave National Park. The incident earned
Floyd_Collins
2006 mining accident in Tasmania, Australia
were rescued on 9 May 2006, two weeks after being trapped nearly 1 kilometre (0.62 mi) below the surface. At 9:26 p.m. (Australian Eastern Standard Time)
Beaconsfield_Mine_collapse
Natural satellite orbiting Earth
the South, where water is trapped in permanently shadowed craters and crevices, allowing it to persist as ice on the surface since they are shielded from
Moon
Object with escape velocity exceeding the speed of light
the same way as projectiles, any light emitted at the surface of a dark star would be trapped by the star's gravity, rendering it dark, hence the name
Dark star (Newtonian mechanics)
Dark_star_(Newtonian_mechanics)
English musician (born 1946)
appeared in a series of livestreams with his family, billed as the "Von Trapped Family", performing songs by Barrett and Leonard Cohen. In July, he released
David_Gilmour
Asphalt pit or asphalt lake
an anticlinal trap. If there is a fault or fracture in the overlying strata above the oil reserve, the oil may migrate to the surface. This is possible
Tar_pit
American songwriter
the age of 63. 1970 – Linde Manor 1971 – Surface Noise (unreleased) 1973 – Dennis Linde (Elektra) 1974 – Trapped in the Suburbs 1977 – Under the Eye (Monument)
Dennis_Linde
Swimming pool cleaning device
disturbed return water helps remove organic debris from the pool surface and directs it to be trapped within the back-dilution system for easy disposal. Some return
Pool_skimmer
Water distillation and purification system using solar energy
transparent glass plate while trapping the long-wave radiation emitted by the heated sand and water inside the still. This trapped heat raises the water temperature
Solar_still
Naturally-pressurized water source
groundwater to the surface without pumping because it is under pressure within a body of rock or sediment known as an aquifer. When trapped water in an aquifer
Artesian_well
Large contact lens resting on the sclera, creating a tear-filled vault over the cornea
order to ensure no bubbles become trapped under the lens after it is seated on the eye. If there is a bubble trapped then it is usually recommended to
Scleral_lens
Hypersonic aircraft design
fuselage ended. Since the air was trapped between this sheet and the fuselage, a large volume of air would be trapped, much more than the more basic approach
Waverider
Species of true bug
beneath their wing cases when they are on the surface as the oxygen is trapped by tiny hairs. They use trapped air in their physical gill to convert water-borne
Lesser_water_boatman
Plumbing device
In plumbing, a trap is a U-shaped portion of pipe designed to trap liquid or gas to prevent unwanted flow; most notably sewer gases from entering buildings
Trap_(plumbing)
Alternative model for black holes
bursts". arXiv:astro-ph/9803014. Mitra, Abhas (2000). "Non-occurrence of trapped surfaces and black holes in spherical gravitational collapse: An abridged version"
Magnetospheric eternally collapsing object
Magnetospheric_eternally_collapsing_object
Device that condenses specific vapors and gases
cold traps are necessary when removing large amounts of liquid as in freeze drying. Cold traps also refer to the application of cooled surfaces or baffles
Cold_trap
Primary organ of the respiratory system
mouth and behind the mouth in the oropharynx, and larger particles are trapped in nasal hair after inhalation. In addition to their function in respiration
Lung
Branching shapes
negative charge, accumulating on the outer surfaces of the specimen. Under continued irradiation, the amount of trapped charge builds until the effective voltage
Lichtenberg_figure
Automatic value for steam equipment
and sits on the surface of the condensate–steam interface. When there is no condensate, the actuator keeps the valve closed. When the trap is full of condensate
Steam_trap
2017 film by Mark Dennis
Time Trap is a 2017 science fiction action adventure film, directed by Ben Foster and Mark Dennis. Starring Brianne Howey, Cassidy Gifford, Olivia Draguicevich
Time_Trap_(film)
Device used to accumulate positrons
number of trapped positrons. If larger particle numbers are desired, the positrons are transferred to an ultra-high vacuum (UHV) Penning–Malmberg trap in a
Buffer-gas_trap
2021 song from animated film Encanto
"Surface Pressure" is a song from Disney's 2021 animated musical film Encanto, released by Walt Disney Records as part of the film's soundtrack on November
Surface_Pressure
Organisms on the ocean's surface
Organisms that live freely at the ocean surface, termed neuston, include keystone organisms like the golden seaweed Sargassum that makes up the Sargasso
Ocean_surface_ecosystem
Material trapped inside a mineral during formation
any material trapped inside a mineral during its formation. In gemology, it is an object enclosed within a gemstone or reaching its surface from the interior
Inclusion_(mineral)
Type of insect trap that uses pheromones to lure insects
insects enter through open sides and become adhered to the liner surface. Delta traps are commonly used for the capture of moth species in orchards and
Pheromone_trap
6th episode of the 1st season of Fallout
"The Trap" is the sixth episode of the first season of the American post-apocalyptic drama television series Fallout. The episode was written by co-executive
The_Trap_(Fallout)
2015 film by Patricia Riggen
in which 33 miners were trapped inside the San José Mine in Chile for 69 days. The film stars Antonio Banderas as trapped miner Mario Sepúlveda. It
The_33
Gas produced naturally within marshes, swamps and bogs
to form a crust that prevents oxygen from reaching the organic material trapped below. That is the condition that allows anaerobic digestion and fermentation
Marsh_gas
Device used to remotely catch aquatic animals
A fish trap is a trap used for catching fish and other aquatic animals of value. Fish traps include fishing weirs, cage traps, fish wheels and some fishing
Fish_trap
Icelandic rock band
list. This song is also featured in the first episode of the TV series Trapped (2015). By year's end, Kaleo had signed with Sena, the country's main record
Kaleo_(band)
Zone of energetic charged particles around the planet Earth
David P. Stern and Mauricio Peredo Background: Trapped particle radiation models—Introduction to the trapped radiation belts by SPENVIS SPENVIS—Space Environment
Van_Allen_radiation_belt
2020 Swedish film
Breaking Surface is a 2020 Swedish Norwegian Belgian survival thriller drama film written and directed by Joachim Hedén [sv] and starring Moa Gammel Ginsburg
Breaking_Surface
Type of vacuum pump
Gasses are trapped by a combination of chemical reactions with the surface of the highly-reactive sputtered material, and being physically trapped underneath
Ion_pump
Device used to monitor or reduce insect populations
type and funnel type. Light traps are widely used to survey nocturnal moths. Total species richness and abundance of trapped moths may be influenced by
Insect_trap
Underwater diving breathing gas supplied from the surface
Institution. "Surface-supplied Diver Training Manual" (PDF) (1st ed.). Chattanooga, TN: Diving Control Board, Tennessee Aquarium. 2007. "Trapped diver umbilical
Surface-supplied_diving
Mineralized debris within the crevices of the tonsils
smooths the surface of the tonsils. This technique flattens the edges of the crypts and crevices that collect the debris, preventing trapped material from
Tonsil_stones
Very large volume eruption of basalt lava
hotspot reaching the surface of the Earth via a mantle plume. Flood basalt provinces such as the Deccan Traps of India are often called traps, after the Swedish
Flood_basalt
Atomic physics technique to achieve high phase space densities
reach. Atoms trapped in optical or magnetic traps can be evaporatively cooled via two primary mechanisms, usually specific to the type of trap in question:
Evaporative cooling (atomic physics)
Evaporative_cooling_(atomic_physics)
Species of marine cnidarian
on the surface of the water. A gas-filled bladder called the pneumatophore provides buoyancy that lets the animal stay afloat on the surface of the water
Portuguese_man_o'_war
Sliding or hinged door that is flush with the surface of a floor, ceiling, or roof
A trapdoor or hatch is a sliding or hinged door that is flush with the surface of a floor, ceiling, or roof. It is traditionally small in size. It was
Trapdoor
Use of magnetic fields to isolate particles or atoms
of the trapped atom. The chip shown is 2 cm x 2 cm; this size was chosen for ease in manufacture. In principle, the size of such microchip traps can be
Magnetic_trap_(atoms)
Dwarf planet in the asteroid belt
surface are expected to end up in the traps, hopping an average of three times before escaping or being trapped. Dawn, the first spacecraft to orbit Ceres
Ceres_(dwarf_planet)
Large igneous province in India
The Deccan Traps are a large igneous province of west-central India (17–24°N, 73–74°E). They are one of the largest volcanic features on Earth, with lava
Deccan_Traps
Improvised footpath created by frequent trampling
25% in 2020. These parks provided a safe place for recreation for people trapped indoors. Due to the higher flow of people and the desire for separation
Desire_path
Instrument used in oceanography to measure the quantity of sinking particulate material
within the surface euphotic zone, and is of interest to scientists studying the role of the biological pump in the carbon cycle. Sediments traps normally
Sediment_trap
Red-colored seep of saltwater flowing from Taylor Glacier in Antarctica
The more soluble ferrous ions initially are dissolved in old seawater trapped in an ancient pocket remaining from the Antarctic Ocean when a fjord was
Blood_Falls
Ability of a plant to retain information
memory. Venus flytraps have many tiny hairs along the trap's surface that when touched, trigger the trap to close. But the process requires more than one hair
Plant_memory
Closed cave in Utah
Retrieved September 29, 2023. Morgan, Emiley (November 26, 2009). "Man trapped in Utah County's Nutty Putty cave dies". Deseret News. Archived from the
Nutty_Putty_Cave
1993 disease outbreak
its natural reservoir. By late June, testing had shown that about 30% of trapped western deer mice and smaller percentages of rodents of other species had
1993 Four Corners hantavirus outbreak
1993_Four_Corners_hantavirus_outbreak
1950 mining accident in Ayrshire, Scotland
flooded pit workings, trapping more than a hundred miners underground. For several days rescue teams worked non-stop to reach the trapped men. Most were eventually
Knockshinnoch_disaster
Carnivorous plants resembling pitchers
Some pitcher plants contain mutualistic insect larvae, which feed on trapped prey, and whose excreta the plant absorbs. Whatever the mechanism of digestion
Pitcher_plant
1988 American film
Trapped Alive (originally titled Forever Mine; also known as Trapped) is a 1988 American slasher film directed by Leszek Burzynski, and starring Cameron
Trapped_Alive
Shooting range safety feature
A bullet trap (or pellet trap when used specifically for air guns) is a device to stop and collect projectiles fired at a shooting range to prevent overpenetrations
Bullet_trap
Study of water distribution
to find the amount of water trapped or retained for a given surface. This has been studied extensively for random surfaces. One system in which the retention
Water retention on random surfaces
Water_retention_on_random_surfaces
Quantum bit
motional states or alternatively the spin states of an electron trapped above the surface of liquid helium. The electron-on-helium qubit was proposed as
Electron-on-helium_qubit
2026 film by Renny Harlin
Zoey, Matt, Becky, and Cora’s stepbrother Finn are trapped in an air pocket. Swimming to the surface to find help, Matt encounters Cora and Finn’s father
Deep_Water_(2026_film)
Trap designed to catch birds of prey
rodent or small bird, with a series of monofilament nooses attached to the surface to snare the legs of a free-flying raptor that attempts to take the bait
Bal-chatri
2014 mining accident in Zenica, Bosnia
"Raspotočje", 34 miners remained trapped inside the mine. All miners were trapped more than 500 meters below the surface, but were provided with fresh air
2014_Zenica_mine_disaster
Valve on the exterior of a ship's hull
open to the sea through flood ports. The trapped air in the tank provides positive buoyancy while on the surface, although sea water sloshing in through
Kingston_valve
Phenomenon in solid-state physics of semiconductors
trap levels: An electron in the conduction band can be trapped in an intragap state. An electron can be emitted into the conduction band from a trap level
Carrier generation and recombination
Carrier_generation_and_recombination
Compact astronomical body
intense magnetic fields. He discovered that the fields get trapped on the black hole surface. In 1967, Werner Israel showed that any non-spinning, uncharged
Black_hole
Airfoil design
airfoil shape as a trapped vortex or vortex attachment. This purportedly prevents separation and maintains airflow over the surface of the airfoil. The
Kline–Fogleman_airfoil
Minimization of heat transfer
paint – Type of paint in which can be used to coat a surface to reduce heat transfer Heat trap – Valves or loops of pipe on water heaters Removable insulation
Thermal_insulation
Region where Earth's magnetic field is weakest relative to an idealised dipole
where Earth's inner Van Allen radiation belt comes closest to Earth's surface, dipping down to an altitude of 200 kilometres (120 mi). This leads to
South_Atlantic_Anomaly
Large igneous province in South America and Africa
flows occurred 136 to 132 million years ago. The province had a post-flow surface area of 1,000,000 square kilometres (390,000 sq mi) and an original volume
Paraná_and_Etendeka_traps
First planet from the Sun
rocky planet with a trace atmosphere and a surface gravity slightly higher than that of Mars. The surface of Mercury is similar to Earth's Moon, being
Mercury_(planet)
Non-orientable surface with one edge
In mathematics, a Möbius strip, Möbius band, or Möbius loop is a surface that can be formed by attaching the ends of a strip of paper together with a
Möbius_strip
TRAPPED SURFACE
TRAPPED SURFACE
Boy/Male
British, English
Traveler
Boy/Male
Australian, Biblical, Finnish, German
Dedicated; Disciplined; Experienced; Trained
Boy/Male
Muslim/Islamic
The wrapped one
Boy/Male
Arabic, Muslim
Wrapped in; Enveloped; Attribute of the Prophet Muhammad
Boy/Male
American, Anglo, British, English
Game Warden; Falcon Trainer; Bird Trapper
Boy/Male
Muslim
Wrapped in, Enveloped
Boy/Male
Muslim/Islamic
Wrapped
Boy/Male
Biblical
Wrapped up, hidden, covered, myrrh, rosin.
Girl/Female
American, Australian, British, English
Soft-napped Fabric
Surname or Lastname
German
German : metonymic occupational name for the owner of a tavern or a nickname for a drinker, from Low German tappe ‘tap’.German : variant of Tapp.English : variant spelling of Tapp.
Surname or Lastname
English
English : metonymic occupational name for a trapper, from a derivative of Middle English trapp ‘trap’.German : nickname for a stupid person, from Middle High German trappe ‘bustard’ (of Slavic origin).German : topographic name for someone living by a step-like feature in the terrain, from Middle Low German treppe, trappe ‘step’, or by a flight of steps, standard German Treppe.Thomas Trapp (b. 1635) was in Edgartown, Martha’s Vineyard, MA, by 1659. He or his family probably came originally from Great Baddow, Essex, England.
Boy/Male
Indian
Wrapped in, Enveloped
Boy/Male
Arabic, Muslim
Wrapped
Surname or Lastname
English and German
English and German : occupational name for a wine merchant or tavernkeeper, Middle English tapper (an agent derivative of tappen ‘to draw off’), Low German tappe ‘tap’.North German : nickname from Middle Low German tapper ‘capable’, ‘eager’, ‘courageous’.Swedish : soldier’s name from tapper ‘brave’.
Surname or Lastname
English
English : variant of Tripp.
Boy/Male
Indian
The wrapped one
Boy/Male
Muslim
The wrapped one
Boy/Male
Indian
Trained
Boy/Male
Muslim
Trained
Boy/Male
Arabic, Australian, Muslim
Wrapped
TRAPPED SURFACE
TRAPPED SURFACE
Boy/Male
Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Punjabi, Sanskrit, Sikh, Tamil, Telugu, Traditional
Bravery; The Sun of Valour; Lord Hanuman; Praiseworthy; Record; Strong Strong; One who Continue Progress
Surname or Lastname
English
English : variant spelling of Dunnock, a nickname from Old English dunnoc ‘hedge sparrow’.
Surname or Lastname
English (now chiefly Yorkshire)
English (now chiefly Yorkshire) : metonymic occupational name for a maker of spurs, from Middle English spore, spure ‘spur’.
Male
Greek
(ΤεÏÎντιος) Greek form of Latin Terentius, possibly TERENTIOS means "rub, turn, twist."
Male
Hebrew
(1-רï‹×¢Ö´×™, 2-רׄ×Ö´×™) Hebrew name RO'I means 1) "my shepherd" or 2) "my seer."
Boy/Male
Muslim
Instruction, Courage, Daring, Guidance
Surname or Lastname
English
English : nickname for a hunchback, from Old French bossu ‘hunchbacked’ (a derivative of bosse ‘lump’, ‘hump’; compare Bossard 2).German : from a short form of the personal name Borkhardt, a variant of Burkhart.Possibly an altered spelling of South German Bös (see Bos).Danish : medieval variant of Buus, a surname of uncertain origin, perhaps from German būsemen ‘devil’, ‘ghost’.
Boy/Male
Tamil
Sitanshu | ஸிதாஂஷூÂ
The Moon
Male
Irish
Irish Gaelic form of English Henry, ANRAÃ means "home-ruler."
Girl/Female
German, Swedish
Noble; Kind; Brightness
TRAPPED SURFACE
TRAPPED SURFACE
TRAPPED SURFACE
TRAPPED SURFACE
TRAPPED SURFACE
n.
Specifically, a loose outer garment; an article of dress intended to be wrapped round the person; as, a morning wrapper; a gentleman's wrapper.
n.
That in which anything is wrapped, or inclosed; envelope; covering.
imp. & p. p.
of Frap
a.
Not trained.
imp. & p. p.
of Strap
imp. & p. p.
of Wrap
imp. & p. p.
of Tramp
imp. & p. p.
of Tap
a.
Having clouds resting on the top or head; reaching to the clouds; as, cloud-capped mountains.
n.
A boy who opens and shuts a trapdoor in a gallery or level.
n.
A wrapper.
imp. & p. p.
of Trap
a.
Covered or wrapped in flannel.
p. a.
Wrapped; covered; cloaked.
a.
Having the top capped or covered with snow; as, snow-capped mountains.
n.
One who traps animals; one who makes a business of trapping animals for their furs.
a.
Confined; cramped.
imp. & p. p.
of Trip