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Aspect of a lens or reflector
A focal cloud is the collection of focal points of an imperfect lens or parabolic reflector whether optical, electrostatic or electromagnetic. This includes
Focal_cloud
Radio aerial composed of directly-connected and passive elements
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Driven_and_parasitic_elements
Radio frequency not deliberately created
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Spurious_emission
Formula in telecommunications engineering of antenna performance
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Friis_transmission_equation
Signal processing technique for sensor arrays
International Conference on Cloud Computing Technologies and Applications (Cloudtech). Brussels, Belgium: IEEE. pp. 1–5. doi:10.1109/CloudTech.2018.8713331.
Beamforming
Blurry region in optics
fraction of a second. Airy disk Astigmatism Bokeh Chromatic aberration Focal cloud Orb (optics) Point spread function Zeiss formula Ray 2000, p. 50. Ray
Circle_of_confusion
Lobes of far field radiation pattern of antenna
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Sidelobes
Telecommunications networks transmitted by radio waves
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Cellular_network
Short electrical transmission line
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Stub_(electronics)
Multi-element, directional antenna useable over a wide band of frequencies
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Log-periodic_antenna
Electrically conductive surface, usually connected to electrical ground
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Ground_plane
Type of parabolic antenna
shape of a dish reflects the signal to the dish's focal point. Mounted on brackets at the dish's focal point is a device called a feedhorn. This feedhorn
Satellite_dish
Wi-Fi access point
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Wi-Fi_hotspot
Type of antenna
like radar, line-of-sight microwave transmission or radio astronomy. Focal cloud Horn antenna Mathur, Ashish; Trivedi, Ranjana; Mathur, G. B. (2011-01-01)
Feed_horn
Antenna with a fractal shape
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Fractal_antenna
Directional variation in strength of radio waves
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Radiation_pattern
Behaviour of travelling radio waves
television broadcast antenna and a roof mounted receiving antenna. If a cloud passed between the antennas the link could actually become NLOS but the
Radio_propagation
Antenna used with a television to receive television programs
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Television_antenna
Changing the direction of the main lobe of a radiation pattern
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Beam_steering
Cable or conductor connecting a radio transmitter to an antenna
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Antenna_feed
Type of radio antenna
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Yagi–Uda_antenna
Optical axis of a directional antenna
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Antenna_boresight
Area dedicated to radio transmitting
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Antenna_farm
Receiving device on satellite dishes
the orbital separation of the satellites to be received, the diameter and focal length of the dish used, and the position of the reception site relative
Low-noise_block_downconverter
Measure of how much of an antenna's signal is transmitted in one direction
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Directivity
Region of the radiation pattern of an antenna
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Main_lobe
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Antenna_rotator
Telecommunications device
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Antenna_tuner
Use of multiple antennas in radio
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
MIMO
Telecommunications performance metric
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Radiation_efficiency
Device used in the transmission of satellite signals
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Block_upconverter
Device that transmits and receives radio waves
electromagnetic theory of James Clerk Maxwell. Hertz placed dipole antennas at the focal point of parabolic reflectors for both transmitting and receiving. Starting
Antenna_(radio)
Two-conductor flat cable used to carry radio frequency signals
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Twin-lead
City in Minnesota, United States
St. Cloud or Saint Cloud (/ˈseɪnt klaʊd/; French: [sɛ̃ klu]) is a city in Stearns County, Minnesota, United States. The population was 68,881 at the 2020
St._Cloud,_Minnesota
Type of electrical resistance from an antenna
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Radiation_resistance
Characteristic of a radio antenna
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Antenna_factor
Regions of an electromagnetic field
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Near_and_far_field
Parameter characterizing an AC conductor
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Electrical_length
Type of radio antenna consisting of a loop or coil
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Loop_antenna
Type of antenna
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Self-complementary_antenna
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Wireless device radiation and health
Wireless_device_radiation_and_health
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Array_gain
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Vertical and horizontal (radio propagation)
Vertical_and_horizontal_(radio_propagation)
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Bell Laboratories Layered Space-Time
Bell_Laboratories_Layered_Space-Time
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Antenna_equivalent_radius
Antenna capable of modifying its frequency and radiation properties dynamically
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
Reconfigurable_antenna
Wide-angle photographic lens with strong barrel distortion
degrees, although lenses covering up to 280 degrees exist (see below). Their focal lengths depend on the film format they are designed for. Mass-produced fisheye
Fisheye_lens
High bandwidth channel access method
Radiocommunication Conference Radiation sources / regions Boresight Focal cloud Ground plane Main lobe Near and far field Side lobe Vertical plane Characteristics
WSDMA
Facility used to house computer servers
common to use cloud computing services in data centers owned and operated by providers like Amazon Web Services, Google Cloud Platform, IBM Cloud, and Microsoft
Data_center
Large-scale cybersecurity incident in 2024
provides a cloud data and AI platform widely adopted by large enterprises for storing and analyzing data. In 2024, it became the focal point of a major
Snowflake_data_breach
Species of carnivore
The Sunda clouded leopard (Neofelis diardi) is a medium-sized wild cat native to Borneo and Sumatra. It is listed as Vulnerable on the IUCN Red List since
Sunda_clouded_leopard
Parasitic disease
Encephalitozoonosis is eye infections, specifically phacoclastic uveitis, focal clouding of the lens, and anterior uveitis, with the mouse strain (type II) being
Encephalitozoonosis
Document used during film production
Filmmaker's Manual. Focal Press. p. 222. ISBN 0-240-80585-2. "Call sheet". Merriam-Webster. Retrieved August 10, 2012. "G-Casper – Free Cloud-Based Tool for
Daily_call_sheet
Linux distribution developed by Canonical
directly on hardware or run within a virtual machine. It is widely used for cloud computing, with integration support for platforms such as OpenStack. It
Ubuntu
Optical device which transmits and refracts light
different radii of curvature in two orthogonal planes. They have a different focal power in different meridians. This forms an astigmatic lens. An example
Lens
Photography of clouds or sky
Cloudscape photography is photography of clouds or sky. An early cloudscape photographer, Belgian photographer Léonard Misonne (1870–1943), was noted for
Cloudscape_photography
Cybersecurity discipline
years the increase of remote workers and shift to cloud-based workflows has centralized identity as a focal point for attackers, leading to the concept of
Identity threat detection and response
Identity_threat_detection_and_response
Apparent reduction of distance between objects in photographs
appear reduced. The effect is commonly associated with the use of long-focal length (telephoto) lenses, although it is primarily caused by the camera's
Telephoto_compression
Additional storage that enables faster access to main storage
user from the cache. A cloud storage gateway is a hybrid cloud storage device that connects a local network to one or more cloud storage services, typically
Cache_(computing)
multi-client and custom research, including strategic surveys targeting cloud computing, mobile computing, developer relations and developer marketing
Evans_Data_Corporation
Underwater phenomenon due to Snell's Law
ISBN 0-521-77504-3. Martin Edge and Ian Turner (1999). The Underwater Photographer. Focal Press. ISBN 0-240-51581-1. Robert Williams Wood (1914). Physical Optics
Snell's_window
Display of work at stages in a process
Twproject (formerly Teamwork), project and groupware management tool. Unicom Focal Point, a portfolio management and product management tool. Wrike, An agile
Kanban_board
Recognition of a person as being holy
moral presence is attributed. These saintly figures, he asserts, are "the focal points of spiritual force-fields". They exert "powerful attractive influence
Saint
Cysticercosis of the brain
symptoms are seizures, intracranial hypertension, cognitive impairment, and focal deficits. Epilepsy is the most common symptom of neurocysticercosis; neurocysticercosis
Neurocysticercosis
American businessman
RadiumOne, Gravity4, and BNN Breaking. He is currently the CEO of VendorCloud and RedLotus. In 2010, Bloomberg Businessweek named him to its list of the
Gurbaksh_Chahal
Moroccan-Swiss computer scientist and academic
DCL, EPFL. Retrieved 4 October 2024. "Guerraoui Wins an ERC Grant". EcoCloud. 2013-09-17. Archived from the original on 2018-11-24. Retrieved 2018-10-22
Rachid_Guerraoui
Photograph of Earth from the Artemis II mission
cratered lunar surface, with the planet's night side in darkness, and sunlit cloud systems visible over the Australia and Oceania regions. In the foreground
Earthset
Planned 2020s private Venus astrobiology probe
atmosphere, which would indicate potentially habitable conditions within Venus's cloud layer. Additionally, the mission will demonstrate an inexpensive, deep space
Venus_Life_Finder
Digital camera model
Unlike most similar cameras, it lacks a zoom lens, instead having a fixed focal length of 5.9 mm (or 28 mm, in 35 mm full frame equivalent). The GR 1st
Ricoh_GR_Digital
American rhythm and blues group
work with producer Norman Whitfield, beginning with the Top 10 hit single "Cloud Nine" in October 1968, pioneered psychedelic soul, and was significant in
The_Temptations
Computer system operated by BlackRock Solutions
to clients. Due to the 2008 financial crisis, risk management became a focal point for financial investments. Very few asset managers had the appropriate
Aladdin_(BlackRock)
Country in West Asia
reserves, its geopolitically significant location, and its role as the world's focal point of Shia Islam. Iran is a threshold state with one of the most scrutinized
Iran
Governor of Virginia from 2022 to 2026
Beloved in her high school senior son's AP English class, became one of the focal points of Virginia's 2021 gubernatorial election, and reviving the bill
Glenn_Youngkin
Reference document for drawing a character
character design". Writing for animation, comics & games. Amsterdam; Boston: Focal Press. pp. 28. ISBN 9780240805825. OCLC 70230693. Beiman, Nancy (2013) [2007]
Model_sheet
Governor of Florida since 2019
Retrieved February 28, 2016. Guggenheim, Benjamin. “National sales tax becomes focal point for Trump-DeSantis war” Archived May 20, 2023, at the Wayback Machine
Ron_DeSantis
Hybrid Cloud". "IBM Closes Acquisition of Turbonomic to Deliver Comprehensive AIOps Capabilities for Hybrid Cloud". "IBM to Acquire Premier Hybrid Cloud Consulting
List of mergers and acquisitions by IBM
List_of_mergers_and_acquisitions_by_IBM
finale pulls 651,000 viewers as Kitty Flanagan departs show". Mumbrella. Focal Attractions Pty Ltd. Retrieved 13 September 2018. Knox, David (20 March
List of The Weekly with Charlie Pickering episodes
List_of_The_Weekly_with_Charlie_Pickering_episodes
2021 American documentary television miniseries
Series". BAFTA. Retrieved September 26, 2026. "The FOCAL International Awards 2022 Shortlisted Nominees". FOCAL International. Retrieved September 26, 2026.
9/11:_One_Day_in_America
Monument and landmark in Edinburgh
the two streets leading off St Andrew Square to Princes Street, and is a focal point within that vista, its scale being large enough to screen the Old
Scott_Monument
WWII aerial photography camera
the Enola Gay's tail gunner position to photograph the nuclear mushroom cloud over Hiroshima. Designed by Fairchild Camera and Instrument, approximately
Fairchild_K-20
1940 World War II military campaign
Luftwaffe: The Life of Field Marshal Erhard Milch, Dorney, Windsor, UK: Focal Point Publications, ISBN 978-0-297-76532-5 Kieser, Egbert. Operation Sea
Battle_of_Britain
Suicide method
manually ignite a pilot light with a match; without the combustion the gas cloud would spread unimpeded. Carbon monoxide poisoning was the proximate cause
Suicide_by_poisoning
Genre of fiction about fiction
Chymical Wedding of Christian Rosenkreutz (Johann Valentin Andreae, 1617), The Cloud Dream of the Nine (Kim Man-jung, 1687), The Life and Opinions of Tristram
Metafiction
Convex lens used to magnify images
because it is more comfortable to put the magnifier close to the object (one focal length away). The eye can then be a larger distance away (so the eye can
Magnifying_glass
American actor (1959–2025)
policeman in Prodigy and Mobb Deep's video for "A, B, C's", as well as the focal character in House of Pain's video for "Fed Up". Greene appeared in the
Peter_Greene
Demolished mansion in Manhattan, New York
Henri Riesener for the use of Marie Antoinette at the Château de Saint-Cloud. The focal point of the salon was the ceiling, painted with a mythological scenes
William_K._Vanderbilt_House
American politician and diplomat (born 1959)
the president's team and ideological clashes over policy. He was also the focal point of criticism from left-leaning Democrats for the administration's
Rahm_Emanuel
2025 Full-frame mirrorless interchangeable-lens camera
synchronization 1/200 s Shutter Shutter Electronically controlled vertical-travel focal-plane mechanical shutter, Electronic front-curtain shutter, Electronic Shutter
Nikon_Z5II
Canadian actor (born 1964)
extensively as a researcher. She is a member of the researchers organization FOCAL International. Cubria, Kaitlin (May 19, 2019). "Keanu Reeves and Ex China
Keanu_Reeves
2025 adventure video game
religious themes in Shuten Order. By creating a fictional religion, the focal cult could have unique values, rules, and a worldview detached from the
Shuten_Order
Transnational drug-trafficking organization
in. He is the only individual to receive the title since Al Capone. The focal point for Sinaloa in Chicago is the city's "Little Village" neighborhood
Sinaloa_Cartel
Palestinian Arab nationalist (1897–1974)
immediate purpose, as conceived by its Egyptian sponsors, was to provide a focal point of opposition to Abdullah and serve as an instrument for frustrating
Amin_al-Husseini
Office building in Los Angeles, California
"congregated" to One Wilshire by the early 1990s, and by 1998, One Wilshire was a "focal point" for the telecom industry, in part because it had a clear line of
One_Wilshire
Group of global contributors to Wikimedia projects
similar to chapters, founded to support Wikimedia projects in a subject focal area. As of 2021[update] there are two such organizations. WikiPortraits
Wikimedia_movement
1989 superhero film by Tim Burton
Design and Art Direction (Screencraft Series). Focal Press. ISBN 0240804007. Published in 1999, Focal Press Anton Furst, Derek Meddings, Visualizing Gotham:
Batman_(1989_film)
Free online crowdsourced encyclopedia
September 16, 2007, The Washington Post reported that Wikipedia had become a focal point in the 2008 US election campaign, saying: "Type a candidate's name
Wikipedia
Daughter of US president George H. W. Bush (1949–1953)
the loss of his sister. He and his brother Jeb then became their mother's focal points, and she devoted her time to caring for them, as a means of overcoming
Pauline_Robinson_Bush
2010 video game
concerned about access to water in the desert setting and Hoover Dam became a focal point for worldbuilding. During a Game Developers Conference presentation
Fallout:_New_Vegas
Natural disaster in Texas, U.S.
Murphy, Sean (July 12, 2025). "Memorial in flood-ravaged Texas city becomes focal point of community's grief". AP News. Retrieved July 12, 2025. Turner, Sammy
July 2025 Central Texas floods
July_2025_Central_Texas_floods
Tower in Paris, France
Henri Deutsch de la Meurthe for the first person to make a flight from St. Cloud to the Eiffel Tower and back in less than half an hour. During the 1900s
Eiffel_Tower
travel, tourism, insurance
FOCAL CLOUD
FOCAL CLOUD
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FOCAL CLOUD
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FOCAL CLOUD
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FOCAL CLOUD
travel, tourism, insurance