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Active acquisition of information from a primary source
Observation in the natural sciences refers to the active acquisition of information from a primary source. It involves the act of noticing or perceiving
Observation
Information about the Earth environment
Earth observation (EO) is the gathering of information about the physical, chemical, and biological systems of the planet Earth. It can be performed via
Earth_observation
Unit described by the data that one analyzes, in statistics
a unit of observation (or individual) is the unit described by the data that one analyzes. A study may treat groups as a unit of observation withing a
Unit_of_observation
Topics referred to by the same term
Look up observation in Wiktionary, the free dictionary. Observation is sensing and assimilating the knowledge of a phenomenon into a framework of previous
Observation_(disambiguation)
Index of articles associated with the same name
An army of observation is a military body whose purpose is to monitor a given area or enemy body in preparation for possible hostilities. Some of the
Army_of_observation
Process of noting the occurrence of animals
Wildlife observation is the practice of noting the occurrence or abundance of animal species at a specific location and time, either for research purposes
Wildlife_observation
Military crewed balloon
An observation balloon is a type of balloon that is employed as an aerial platform for gathering intelligence and spotting artillery. The use of observation
Observation_balloon
Method in anthropology
Participant observation is one type of data collection method by practitioner-scholars typically used in qualitative research and ethnography. This type
Participant_observation
Type of medical service
Medical observation is a medical service aimed at continued care of selected patients, usually for a period of 6 to 24 (sometimes more) hours, to determine
Medical_observation
Topics referred to by the same term
Observation Hill may refer to: Observation Hill (Somaliland), location of Battle of Tug Argan in Somaliland Observation Hill (McMurdo Station), Antarctica
Observation_Hill
Tall structure for long-distance viewing
An observation tower is a tower used to view events from a long distance and to create a full 360 degree range of vision to conduct long distance observations
Observation_tower
Artillery spotter aircraft
An air observation post (AOP) is an aeroplane or helicopter used in the role of artillery spotter by the British Army and Commonwealth forces. In this
Air_observation_post
Elevated sightseeing platform
An observation deck, observation platform, or viewing platform is an elevated sightseeing platform usually situated upon a tall architectural structure
Observation_deck
Japanese light novel series
An Observation Log of My Fiancée Who Calls Herself a Villainess (Japanese: 自称悪役令嬢な婚約者の観察記録。, Hepburn: Jishō Akuyaku Reijō na Konyakusha no Kansatsu Kiroku)
An Observation Log of My Fiancée Who Calls Herself a Villainess
An_Observation_Log_of_My_Fiancée_Who_Calls_Herself_a_Villainess
1883 astronomical event
The Bonilla observation was an astronomical event in 1883 in which hundreds of unidentified flying objects were observed and photographed by Mexican astronomer
Bonilla_observation
Act of detecting something new
meaningful. In the sciences and other academic disciplines, discovery is the observation of new phenomena, new actions, or new events and involves providing new
Discovery_(observation)
United Kingdom social research organisation
Mass-Observation is a United Kingdom social research project. It was originally the name of an organisation which ran from 1937 to the mid-1960s, and
Mass-Observation
Train car with large windows for rear viewing
An observation car/carriage/coach (in US English, often abbreviated to simply observation or obs) is a type of railroad passenger car, generally operated
Observation_car
Method in social science research
Covert participant observation is a method in social science research. Participant observation involves a researcher joining the group they are studying
Covert participant observation
Covert_participant_observation
2019 video game
Observation is an adventure video game developed by No Code and published by Devolver Digital. The game, described as sci-fi thriller, puts the player
Observation_(video_game)
Analog observation is, in contrast to naturalistic observation, a research tool by which a subject is observed in an artificial setting. Typically, types
Analog_observation
Form of humor based on the commonplace aspects of everyday life
Observational comedy is a form of humour based on commonplace aspects of everyday life, especially small details and shared experiences. In a typical
Observational_comedy
Knowledge acquired by means of the senses
objects. It is generally accepted that unaided perception constitutes observation, but it is disputed to what extent objects accessible only to aided perception
Empirical_evidence
Monitoring process to ensure that a person cannot attempt suicide
hospitals, the practice is sometimes referred to as constant visual observation (CO). CO is the practice of placing somebody, generally someone in a
Suicide_watch
the observational method can exert varying amounts of control over the environment in which the observation takes place. This makes observational research
Observational methods in psychology
Observational_methods_in_psychology
Position from which soldiers can watch enemy movements
An observation post (commonly abbreviated OP), temporary or fixed, is a position from which soldiers can watch enemy movements, to warn of approaching
Observation_post
Mariner-class merchant ship
USNS Observation Island (T-AGM-23) was built as the Mariner-class merchant ship Empire State Mariner for the United States Maritime Commission, launched
USNS_Observation_Island
Website and apps for collecting, validating and sharing biodiversity observations
biodiversity observations. Observation.org may be accessed via its website or from its mobile applications like ObsIdentify or Observation. By 2026, the database
Observation.org
Satellite designed to observe Earth from orbit
An Earth observation satellite or Earth remote sensing satellite is a satellite used or designed for Earth observation (EO) from orbit, including spy
Earth_observation_satellite
Fact that observing a situation changes it
physics, the observer effect is the disturbance of a system by the act of observation. This is often the result of utilising instruments that, by necessity
Observer_effect_(physics)
Japanese manga series
Poyopoyo Kansatsu Nikki (ポヨポヨ観察日記, Poyopoyo Observation Diary) is a Japanese manga series created by Rū Tatsuki about a spherical cat named Poyo and the
Poyopoyo_Kansatsu_Nikki
Observation Post overlooking the inner German border
Observation Post Alpha, OP Alpha, or Point Alpha was a Cold War observation post between Rasdorf, Hesse, West Germany and Geisa, Thuringia, East Germany
Observation_Post_Alpha
Index of articles associated with the same name
Observer effect, observer bias, observation effect, or observation bias may refer to a number of concepts, some of them closely related: Hawthorne effect
Observer_effect
Topics referred to by the same term
Natural observation may refer to: Observational study Naturalistic observation Self-observation This disambiguation page lists articles associated with
Natural_observation
Methods and instruments used to observe the Moon
Space Station) transit. Solar System portal List of lunar craters Moon Observational astronomy Planetshine "Why Does the Moon Look Larger at the Horizon
Lunar_observation
1984 musical by Andrew Lloyd Webber
diesel and electric engines in the hope of impressing a first-class observation car, Pearl. The actors perform on roller skates. Running for 7,409 performances
Starlight_Express
Observation of a subject in its natural habitat
Naturalistic observation, sometimes referred to as fieldwork, is a valuable form of empirical data collection in research methodology across numerous
Naturalistic_observation
Method of determining the direction of Mecca
use sophisticated instruments. This observation is called rasd al-qibla ('observing the qibla'). This observation is not observable in the hemisphere
Qibla_observation_by_shadows
Observation that would cause a large change if deleted
In statistics, an influential observation is an observation for a statistical calculation whose deletion from the dataset would noticeably change the
Influential_observation
Division of astronomy
Observational astronomy is a division of astronomy that is concerned with recording data about the observable universe, the practice and study of observing
Observational_astronomy
Skyscraper in Manhattan, New York
triangular observation deck, known as The Edge, jutting out from the 100th floor, with a bar and event space on the 101st floor. This observation deck, at
30_Hudson_Yards
Study of the origin of the universe (structure and evolution)
Observational cosmology is the study of the structure, the evolution and the origin of the universe through observation, using instruments such as telescopes
Observational_cosmology
Study of the Sun's behavior
Solar observation is the scientific endeavor of studying the Sun and its behavior and relation to the Earth and the remainder of the Solar System. Deliberate
Solar_observation
Interplay between observation, experiment, and theory in science
method is an empirical method for acquiring knowledge through careful observation, rigorous skepticism, hypothesis testing, and experimental validation
Scientific_method
2015 detection made by LIGO interferometers
The first direct observation of gravitational waves was made on 14 September 2015 and was announced by the LIGO and Virgo collaborations on 11 February
First observation of gravitational waves
First_observation_of_gravitational_waves
the social sciences, observational research (or field research) is a social research technique that involves the direct observation of phenomena in their
Observational_techniques
Building in New York, United States of America
The Prospect Point Observation Tower (also known as the Niagara Falls Observation Tower) is a tower in Niagara Falls, New York, United States just east
Prospect Point Observation Tower
Prospect_Point_Observation_Tower
The Observation was a steamship that exploded on September 9, 1932, in the East River of New York City. Workers were being transported to the construction
Observation_(steamboat)
British Army artillery battery
4/73 (Sphinx) Special Observation Post Battery Royal Artillery is a Surveillance and Target Acquisition (STA) unit of the British Army. It fields the
4/73 (Sphinx) Special Observation Post Battery Royal Artillery
4/73_(Sphinx)_Special_Observation_Post_Battery_Royal_Artillery
Schomberg Observation Tower is a German observation tower that was constructed in 2005 and was finished in 2006. It is a steel truss tower that is used
Schomberg_Observation_Tower
Multiple proofs regarding Earth's approximately spherical shape
shape of Earth can be empirically evidenced by many different types of observation, ranging from ground level, flight, or orbit. The spherical shape causes
Empirical evidence for the spherical shape of Earth
Empirical_evidence_for_the_spherical_shape_of_Earth
Háj is an observation tower on the top of Háj hill in Olomouc Region of the Czech Republic, about 3 kilometres northwest from Šumperk. Its height is 29
Háj_(observation_tower)
Semantic property
Observational equivalence is the property of two or more underlying entities being indistinguishable on the basis of their observable implications. Thus
Observational_equivalence
Japan's national air and space agency
2025. The next funded Earth-observation mission after GOSAT is the GCOM (Global Change Observation Mission) Earth-observation program as a successor to
JAXA
Tool for angle measurement
backstaff is difficult to use. For solar observations, filters allow direct observation of the Sun. Since the measurement is relative to the horizon, the measuring
Sextant
Ancient and modern recorded observations of supernovae explosions
The known history of supernova observation goes back to 1006 AD. All earlier proposals for supernova observations are speculations with many alternatives
History of supernova observation
History_of_supernova_observation
Difference between a measured value of a quantity and its true value
Observational error (or measurement error) is the difference between a measured value of a quantity and its unknown true value. Such errors are inherent
Observational_error
Mountain, highest point in Tennessee, United States
insect balsam woolly adelgid. Built in 1959, the observation tower features a circular observation platform accessed by a spiral ramp. The ramp is 375
Kuwohi
Observation wheel in Melbourne Docklands, Australia
Described by its operators as an "observation wheel" and claimed to be "the Southern Hemisphere's only giant observation wheel", it is 120 m (394 ft) tall
Melbourne_Star
Flying squadron of the British Army's Army Air Corps
Corps (AAC). It was formerly No. 661 Squadron, a Royal Air Force air observation post squadron associated with the Canadian 1st Army and later part of
No._661_Squadron_AAC
Helicopter which is built or converted for use by military forces
Examples of specialized military helicopters are attack helicopters, observation helicopters and anti-submarine warfare (ASW) helicopters. Military helicopters
Military_helicopter
Military seaplanes used as observation posts
Observation seaplanes are military aircraft with flotation devices allowing them to land on and take off from water. Their primary purpose was to observe
Observation_seaplane
Psychoanalytic infant observation is a distinct empirical case study method in psychoanalytic and psychotherapy training which was developed at the Tavistock
Psychoanalytic infant observation
Psychoanalytic_infant_observation
Former skyscraper in Manhattan, New York
the World Trade Center Observatories," and on the roof was an outdoor observation deck accessible to the public and a disused helipad at the center. The
2 World Trade Center (1971–2001)
2_World_Trade_Center_(1971–2001)
Hypothesis about sapient life and the universe
of science and cosmology, the anthropic principle (also known as the observation selection effect) is the proposition that the range of possible observations
Anthropic_principle
Flying squadron of the British Army's Army Air Corps
Army Air Corps. It was formerly No. 662 Squadron, a Royal Air Force air observation post squadron associated with the 21st Army Group during the Second World
No._662_Squadron_AAC
1966 mass shooting in Texas, U.S.
the public, both within the Main Building tower and from the tower's observation deck. Whitman shot and killed 15 people, including an unborn child, and
University of Texas tower shooting
University_of_Texas_tower_shooting
Learning that occurs through observing the behaviour of others
Observational learning is learning that occurs through observing the behavior of others. It is a form of social learning which takes various forms, based
Observational_learning
Observed value of a random variable
In probability and statistics, a realization or observation (also called observed value) of a random variable or random element is the value that is actually
Realization_(probability)
1849–1850 novel by Charles Dickens
self-understanding". "The Personal History, Adventures, Experience, and Observation of David Copperfield the Younger, of Blunderstone Rookery" was published
David_Copperfield
Advisory body to the European Space Agency
Committee for Earth Observation (ACEO) is the senior advisory body to the European Space Agency's (ESA's) Director of Earth Observation (EO) Programmes.
Advisory Committee for Earth Observation
Advisory_Committee_for_Earth_Observation
High place for viewing scenery
A scenic viewpoint—also called an observation point, viewpoint, viewing point, vista point, scenic overlook, etc.—is an elevated location where people
Scenic_viewpoint
Military role for observing artillery strikes and directing them to their targets
the target depended on the terrain and battlefield situation. Elevated observation posts could be used as an aid to facilitate communication between the
Artillery_observer
Flying squadron of the British Army's Army Air Corps
afterwards in Germany. Numbers 651 to 663 Squadrons of the RAF were air observation post units working closely with British Army units in artillery spotting
No._652_Squadron_AAC
Observation deck in Gold Coast, Australia
SkyPoint (formerly Q1 Observation Deck and QDeck) is an observation deck located 230 metres (750 ft) off the ground at the top of the Q1 on the Gold Coast
SkyPoint_Observation_Deck
Greatest and least values in a statistical data sample
sample maximum and sample minimum, also called the largest observation and smallest observation, are the values of the greatest and least elements of a sample
Sample_maximum_and_minimum
Adage that work expands to fill its available time
done. The essay starts by mentioning the first sense as a "commonplace observation", and the bulk of the essay discusses the second, which is what Parkinson
Parkinson's_law
Observation, restaurant in Tampere, Finland
The Pyynikki observation tower (Finnish: Pyynikin näkötorni) is a 26 meter observation tower in Pyynikki, a district and a nature reserve in Tampere,
Pyynikki_observation_tower
also known as the M49 observation telescope, is a multipurpose scope system used primarily for long range marksmanship observation. It can also be used
M49_spotting_scope
The Centre for Polar Observation & Modelling (CPOM) is a Natural Environment Research Council (NERC) Centre of Excellence that studies processes in the
Centre for Polar Observation & Modelling
Centre_for_Polar_Observation_&_Modelling
British Army commando artillery battery
148 (Meiktila) Commando Forward Observation Battery is a specialist Naval Gunfire Support Forward Observation (NGSFO) unit within 29 Commando Regiment
148 (Meiktila) Battery Royal Artillery
148_(Meiktila)_Battery_Royal_Artillery
Observation tower in Bolbro Hill, Odense
Odinstårnet (The Odin Tower) was an observation tower located on Bolbro Bakke (Bolbro Hill) in Odense, Denmark. The tower, 175 metres (581 ft) tall, was
Odinstårnet
Chamber for transporting divers vertically through the water
out. An observation bell is a closed bell, generally operated with internal pressure at atmospheric pressure, which provides an observation platform
Diving_bell
Movement in Western philosophy
cognitively meaningful only if it can be verified through empirical observation or if it is a tautology (true by virtue of its own meaning or its own
Logical_positivism
Flying squadron of the British Army's Army Air Corps
Army Air Corps. It was formerly No. 664 Squadron, a Royal Air Force air observation post squadron associated with the Canadian 1st Army during the Second
No._664_Squadron_AAC
Field army of the Electorate of Hanover in the Seven Years' War
The Hanoverian Army of Observation was a field army of the Electorate of Hanover in the Seven Years' War. It was led by Prince William, Duke of Cumberland
Hanoverian Army of Observation
Hanoverian_Army_of_Observation
1935 film by George Cukor
Dickens' 1850 novel The Personal History, Adventures, Experience, & Observation of David Copperfield the Younger (though a number of characters and incidents
David_Copperfield_(1935_film)
Time between earliest and latest observations of a Solar System body
In observational astronomy, the observation arc (or arc length) of a Solar System body is the time period between its earliest and latest observations
Observation_arc
United States historic place
The Sinnott Memorial Observation Station is a sheltered viewpoint built into the caldera cliff 900 feet above Crater Lake in southern Oregon, United States
Sinnott Memorial Observation Station
Sinnott_Memorial_Observation_Station
Nonfictional motion picture
information. Some examples are explicitly educational, while others serve as observational works; docufiction movies notably include aspects of dramatic storytelling
Documentary_film
Japanese reconnaissance floatplane
The Mitsubishi F1M (Allied reporting name "Pete") is a Japanese observation seaplane of World War II. It was the last biplane type of the Imperial Japanese
Mitsubishi_F1M
1982 novel by Stanisław Lem
Observation on the Spot (Polish title Wizja lokalna is an expression meaning crime scene reconstruction) is a social science fiction novel by Polish writer
Observation_on_the_Spot
Military exploration and observation by means of aircraft or other airborne platforms
artillery spotting, the collection of imagery intelligence, and the observation of enemy maneuvers. After the French Revolution, the new rulers became
Aerial_reconnaissance
4th episode of the 1st season of Alien: Earth
"Observation" is the fourth episode of the American science fiction horror television series Alien: Earth, the first television series of the Alien franchise
Observation_(Alien:_Earth)
Ground station in the Philippines
The Philippine Earth Data Resource and Observation Center, also known as the PEDRO Center is an organization tasked in operating satellite ground stations
PEDRO_Center
System consisting of two black holes in close orbit around each other
wave observation in September 2015. Supermassive binary black hole candidates have been proposed based on indirect evidence, but await observational confirmation
Binary_black_hole
Observation Post Fritsche was a small American military base in Nurestan Province, in Afghanistan. It was originally known as Observation Post Warheit
Observation_Post_Fritsche
Aircraft without any human pilot on board
fire monitoring, river monitoring, environmental monitoring, weather observation, policing and surveillance, infrastructure inspections, smuggling, product
Unmanned_aerial_vehicle
Lunar Impactor
The Lunar Crater Observation and Sensing Satellite (LCROSS) was a robotic spacecraft operated by NASA. The mission was conceived as a low-cost means of
LCROSS
Hotel in Scarborough, Western Australia
Perth suburb of Scarborough, Western Australia. Originally known as Observation City, the hotel was constructed in the 1980s by Bond Corporation to accommodate
Rendezvous Hotel Perth Scarborough
Rendezvous_Hotel_Perth_Scarborough
OBSERVATION
OBSERVATION
OBSERVATION
Male
Egyptian
, a priest of Amen.
Girl/Female
Hindu
Ardhanareeshwar, Goddess of justice, Name of a Goddess
Girl/Female
Indian, Punjabi, Sikh
The Perfect God
Girl/Female
Hindu
Girl/Female
Hindu
Boy/Male
American, British, English, Gaelic, Gujarati, Hindu, Indian, Irish, Kannada, Malayalam, Marathi, Telugu
Light Skinned; Fair-skinned; Fair; The God of Silence
Male
Greek
(Καλλίας) Greek name derived from the word kallos, KALLIAS means "beauty."
Boy/Male
Tamil
Sandipan | ஸாஂதீபந
A sage, Lighting
Boy/Male
Hindu, Indian, Marathi
Lord Shiva
Girl/Female
Muslim/Islamic
Acclaim
OBSERVATION
OBSERVATION
OBSERVATION
OBSERVATION
OBSERVATION
n.
A remark or observation subjoined to a demonstration or a train of reasoning.
v. i.
The act of watching; forbearance of sleep; vigil; wakeful, vigilant, or constantly observant attention; close observation; guard; preservative or preventive vigilance; formerly, a watching or guarding by night.
n.
An account, by a traveler, of occurrences and observations during a journey; as, a book of travels; -- often used as the title of a book; as, Travels in Italy.
a.
Pertaining to, or designating, a set of astronomical tables computed by Kepler, and founded on the observations of Tycho Brahe; -- so named from Rudolph II., emperor of Germany.
a.
Conscious of one's self as an object of the observation of others; as, the speaker was too self-conscious.
a.
Of or pertaining to science; used in science; as, scientific principles; scientific apparatus; scientific observations.
a.
Of or pertaining to zoophytology; as, zoophytological observations.
v. t.
To give heed to; to observe the actions or motions of, for any purpose; to keep in view; not to lose from sight and observation; as, to watch the progress of a bill in the legislature.
v. t.
To assign a weight to; to express by a number the probable accuracy of, as an observation. See Weight of observations, under Weight.
a.
Of or pertaining to the thermoscope; made by means of the thermoscope; as, thermoscopic observations.
a.
Adapted for the observation of objects on land and on the earth; as, a terrestrial telescope, in distinction from an astronomical telescope.
n.
A spectroscope arranged to be attached to a telescope for observation of distant objects, as the sun or stars.
a.
Of a pertaining to observation; consisting of, or containing, observations.
n.
Observation of the heavens or heavenly bodies.
n.
A brief remark or observation; an expression; a phrase, clause, or short sentence.
n.
Sphere or scope of observation.
a.
Lying toward the west; situated at the west, or in a western direction from the point of observation or reckoning; proceeding toward the west, or coming from the west; as, a west course is one toward the west; an east and west line; a west wind blows from the west.
a.
Made, or ascertained, by means of a thermometer; as, thermometrical observations.
a.
Of or pertaining to a theodolite; made by means of a theodolite; as, theodolitic observations.
n.
Close examination; minute inspection; critical observation.