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Debris piles made by powerful tornadoes
Cycloidal marks, also known as cycloidal damage swaths, are lineo-circular piles of debris that are produced by some powerful multiple-vortex tornadoes
Cycloidal_marks
1955 tornado in Nebraska, U.S.
path, cycloidal debris marks were documented in aerial shots after the event. At the time, cycloidal marks were an unknown phenomenon, and the marks left
1955_Scottsbluff_tornado
2003 F4 tornado in South Dakota, U.S.
Manchester. It would destroy crops, trees, and powerlines, digging cycloidal mark patterns into the field − likely having a multiple-vortex structure
2003_Manchester_tornado
EF5 tornado in Iowa
tornado traveled through a series of farm fields, leaving distinct cycloidal marks in the corn stubble. The tornado rapidly grew in size right after touchdown
2008 Parkersburg–New Hartford tornado
2008_Parkersburg–New_Hartford_tornado
Scale for rating tornado intensity
or both; and depending on the circumstances, ground-swirl patterns (cycloidal marks), weather radar data, witness testimonies, media reports and damage
Fujita_scale
Curve traced by a point on a rolling circle
Tautochrone curve Trochoid (for points located outside the circle) Cycloidal marks Cajori, Florian (1999). A History of Mathematics. New York: Chelsea
Cycloid
Tornado outbreak
south and east of Hebron, impacting many farmsteads and tree groves. Cycloidal marks were also produced by the tornado in this region. The tornado then
Tornado outbreak and derecho of June 9–11, 2026
Tornado_outbreak_and_derecho_of_June_9–11,_2026
Violent late-season EF4 tornado in Illinois
studied the cycloidal marks left behind by the tornado after tracking through the city of Washington in the rural areas. Areas of the cycloidal marks were split
2013 Washington, Illinois tornado
2013_Washington,_Illinois_tornado
Toothed gear based on epicycloids and hypocycloids
A cycloidal gear is a toothed gear with a cycloidal profile. Such gears are used in mechanical clocks and watches, rather than the involute gear form
Cycloid_gear
2024 EF3 tornado in Ohio, U.S.
areas, impacting several farmsteads at EF1-EF2 intensities, carving cycloidal marks onto fields, and blowing down several trees and power poles. The tornado
2024 Lakeview–Russells Point tornado
2024_Lakeview–Russells_Point_tornado
EF4 tornado in Mississippi, US
damage. Aerial imagery of this area also revealed ground scouring and cycloidal marks in open fields. A narrow path of wind-rowed granularized debris was
2023_Rolling_Fork_tornado
Violently rotating column of air
Doppler weather radar data, photogrammetry, and ground swirl patterns (cycloidal marks) may also be analyzed to determine intensity and award a rating. Tornadoes
Tornado
Measurement of strength and severity of tornadoes
tornadoes. Doppler radar data, photogrammetry, and ground swirl patterns (cycloidal marks) may also be analyzed to determine the intensity and assign a rating
Tornado_intensity
2008 natural disaster in the US
tornado traveled through a series of farm fields, leaving distinct cycloidal marks in the corn stubble. It then tracked toward Parkersburg, becoming violent
Tornado outbreak of May 22–27, 2008
Tornado_outbreak_of_May_22–27,_2008
punching (or punching the core) Corridor outbreak Cumulonimbus cloud (Cb) Cycloidal marks Cyclonic rotation Cyclogenesis Cyclone – An area of cyclonic low pressure
Glossary_of_tornado_terms
Storm characterized by lightning
tornadoes. Doppler radar data, photogrammetry, and ground swirl patterns (cycloidal marks) may also be analyzed to determine intensity and award a rating. Waterspouts
Thunderstorm
2023 severe weather outbreak in the Southern U.S
imagery of this area also revealed ground scouring and the presence of cycloidal marks in open fields. Beyond this point, the tornado caused widespread EF2
Tornado outbreak of March 24–27, 2023
Tornado_outbreak_of_March_24–27,_2023
Early-season tornado outbreak in Southern United States
the resort to the east, strewing debris across a field and leaving cycloidal marks in the dirt while continuing to snap trees at a weaker, but still strong
Tornado outbreak of March 13–15, 2024
Tornado_outbreak_of_March_13–15,_2024
Scale for rating tornado intensity
engineering analysis. Also sometimes available are ground swirl patterns (cycloidal marks) left in the wake of a tornado. If an on site analysis is not possible
TORRO_scale
tornadoes Gustnado Dust devil Fire whirl Steam devil Tornado impacts Cycloidal marks Debris fallout Power flash Tornado climatology Dixie Alley South American
Outline_of_tornadoes
2010 EF4 tornado in Mississippi, U.S
driver. The tornado traveled northeast through rural areas, carving cycloidal marks onto fields and snapping trees and power poles along US 80. The tornado
2010_Yazoo_City_tornado
homes were destroyed and the two fatalities occurred. The tornado left cycloidal marks on the ground, which were later understood to indicate a multiple-vortex
Tornadoes_of_1955
Tornado outbreak in South Dakota, US
crops, trees and several farm buildings were damaged. Tornado left cycloidal marks in farm fields. F0 Vermillion area Clay 2158 0.2 miles (0.32 km) Brief
2003 South Dakota tornado outbreak
2003_South_Dakota_tornado_outbreak
2023 EF3 tornado across Tennessee and Kentucky, USA
beyond Cabana Drive, the tornado traversed through open fields, carving cycloidal marks into the ground. Nearing Tiny Town Road, the tornado returned to damaging
2023_Clarksville_tornado
As it moved south of Heere, it completely debranched trees and left cycloidal marks in fields. The next day, a weak tornado struck a forest and nearby
Tornadoes_of_2024
Severe weather event in the eastern United States
administrative building and a hangar were damaged. The tornado left cycloidal marks in farm fields outside of town. F0 Marion Marion OH 40°35′00″N 83°08′00″W
2002 Veterans Day weekend tornado outbreak
2002_Veterans_Day_weekend_tornado_outbreak
Weather event in the United States
multiple poorly anchored homes were leveled and swept away. Intense cycloidal marks were observed in farm fields outside of town. Past Fairdale, the tornado
Tornado outbreak of April 8–9, 2015
Tornado_outbreak_of_April_8–9,_2015
and many trees and power lines were downed as well. Tornado left cycloidal marks in farm fields outside of town, and damaged or destroyed several rural
List of tornadoes in the outbreak of November 17, 2013
List_of_tornadoes_in_the_outbreak_of_November_17,_2013
Mechanism for regulating the speed of clocks
clock's drive force. To make its period isochronous, Huygens mounted cycloidal-shaped metal guides next to the pivots in his clocks, that constrained
Pendulum
and many trees and power lines were downed as well. Tornado left cycloidal marks in farm fields outside of town, and damaged or destroyed several rural
List of United States tornadoes from November to December 2013
List_of_United_States_tornadoes_from_November_to_December_2013
EF4 tornado in Georgia and Tennessee, U.S.
located near Friendship Road, where 20 homes were destroyed and deep cycloidal ground scouring was documented. A pickup truck located in the area was
2011_Ringgold–Apison_tornado
Erroneous AI-generated content presented as true
scientist Teresa Kubacka has recounted deliberately making up the phrase "cycloidal inverted electromagnon" and testing ChatGPT by asking it about the (nonexistent)
Hallucination (artificial intelligence)
Hallucination_(artificial_intelligence)
Relationship between fields of study
54, No. 3 (Sep., 2003), pp. 439–463 https://www.jstor.org/stable/3541794 Mark Steiner (1992), "Mathematical Rigor in Physics". https://www.taylorfrancis
Relationship between mathematics and physics
Relationship_between_mathematics_and_physics
American inventor, engineer and professor
the Kirsten pipe (a tobacco pipe), and the Kirsten-Boeing propeller (a cycloidal propeller ). The Kirsten Wind Tunnel at University of Washington was promoted
Frederick_Kirsten
Staten Island Ferry vessels
in each ship are arranged in two married pairs, each of which drive a cycloidal propeller at each end of the ship for double-ended operation. "Eastern
Ollis-class_ferry
Fastest curve descent without friction
the quickest path from A to B or from D to B, the brachistochrone, is a cycloidal arc, which is shown in Fig. 3 for the path from A to B, and Fig.4 for
Brachistochrone_curve
Three-shaft planetary gearset
which in turn made the rotating ring gear rotate by a single tooth like a cycloidal drive.[citation needed] More than one member of a system can serve as
Epicyclic_gearing
2023 tornado outbreak in the Midwestern and Southern United States
video by many storm chasers in the area. The tornado began to leave cycloidal scour marks in farm fields, indicating the presence of multiple-vortices within
Tornado outbreak of March 31 – April 1, 2023
Tornado_outbreak_of_March_31_–_April_1,_2023
of Ilo, Peru in 2015, for three weeks and six months respectively. The Cycloidal Wave Energy Converter is a wave energy concept being developed by Atargis
List_of_wave_power_projects
Shipping company based in Tacoma, Washington, U.S.
Today[when?] Foss provides three large conventional SeaRiver tugs and one Foss cycloidal tractor tug. The Foss SeaRiver Tug office is located at 150A West Industrial
Foss_Maritime
Weather event in the United States
Two outbuildings were destroyed, many trees were snapped, and cycloidal scour marks were left in farm fields as well. As the tornado crossed into Caldwell
Tornado outbreak of May 25–27, 2024
Tornado_outbreak_of_May_25–27,_2024
English clockmaker (1693–1776)
instead of being steel, they are of diamond, and their backs are shaped to cycloidal curves... The action of this escapement is quite different from that of
John_Harrison
Class of Italian minehunters
with two diesel motors driving two Voith Schneider Propellers; these cycloidal propellers eliminate the need for the aft two active rudders. The ships
Lerici-class_minehunter
Weather event in the United States
that heavily damaged a brick home near Bern, Kansas, and left cycloidal scouring marks in open farm fields. A total of 31 tornadoes were confirmed on
Tornado outbreak of May 20–23, 2019
Tornado_outbreak_of_May_20–23,_2019
Ferry service in the Malaysian state of Penang
service in 1957. It had a weight of 180 tonnes and was equipped with a cycloidal propulsion system, while retaining the older side-loading capability that
Penang_ferry_service
Windstorms in the southern United States
circulation themselves at times. Aerial flyovers revealed extensive cycloidal scouring marks in farm fields outside of Marysville. EF3 damage continued to the
Tornado outbreak of March 2–3, 2012
Tornado_outbreak_of_March_2–3,_2012
lantern on the other hand could project a painted image on a surface, and marks the point where cameras and projectors became two different kinds of devices
List of Dutch inventions and innovations
List_of_Dutch_inventions_and_innovations
Franklin T.; Moon, Sung Min (2024). "Evaluating the Viability of Surface Marks to Estimate Tornado Winds in Rural Areas". 104th Annual AMS Meeting 2024
List of F5, EF5, and IF5 tornadoes
List_of_F5,_EF5,_and_IF5_tornadoes
Mechanism for regulating the speed of clocks
the small angle approximation. To be time-independent, the path must be cycloidal. To minimize the effect with amplitude, pendulum swings are kept as small
Escapement
Ferry across the River Thames in east London
ferries featured Voith Schneider propulsion systems for manoeuvrability. A cycloidal propeller was fitted centrally at either end, each driven by a 500bhp
Woolwich_Ferry
Natural satellite orbiting Saturn
October 1, 2017. Hurford, T.A.; Sarid, A.R.; Greenberg, R. (January 2007). "Cycloidal cracks on Europa: Improved modeling and non-synchronous rotation implications"
Enceladus
Deadly EF4 tornado in Kentucky, United States
debarked, barns and farm buildings were destroyed, livestock was killed, and cycloidal markings were left in fields outside the town. Four deaths and numerous
2021_Western_Kentucky_tornado
Weather event in the United States
Farms were swept away in rural areas outside of town, and intense cycloidal scour marks were visible in fields. A department store was flattened and the
Tornado outbreak of May 15–16, 1968
Tornado_outbreak_of_May_15–16,_1968
Group of sudden tornadoes around South Dakota
destroyed, and several others were damaged. Aerial survey revealed cycloidal scour marks in farm fields. Two people were injured. F2 SE of Huron Beadle 0018
Tornado outbreak of August 24, 2006
Tornado_outbreak_of_August_24,_2006
Dutch mathematician and physicist (1629–1695)
oscillating properties of the cycloid, Huygens was able to transform a cycloidal pendulum into a vibrating spring through a combination of geometry and
Christiaan_Huygens
Class of chemical compounds
Arévalo-López, Ángel; Ritter, Clemens; Choi, Kwang-Yong; Lü, Minfeng (2021). "Cycloidal Magnetic Order Promoted by Labile Mixed Anionic Paths in M2(SeO3)F2 (M
Selenite_fluoride
Kirkham-Williams Mercury I (Prof Frederick K Kirsten, University of WA) Kirsten 1934 Cycloidal Flying machine see:Lee-Richards (James Kistler ) Kistler Skeeter (a.k
List_of_aircraft_(K)
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CYCLOIDAL MARKS
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