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Infrasound

Index Infrasound

Infrasound, sometimes referred to as low-frequency sound, is sound that is lower in frequency than 20 Hz or cycles per second, the "normal" limit of human hearing. [1]

119 relations: Absolute threshold of hearing, African elephant, Allies of World War I, Alligator, ANSI/ASA S1.1-2013, Apparitional experience, Artillery, Aurora, Avalanche, Baleen whale, Ballistocardiography, Bioacoustics, Blaster beam, Bolide, British Science Association, Brown note, Chelyabinsk meteor, Clear-air turbulence, Collins English Dictionary, Comprehensive Nuclear-Test-Ban Treaty, Coventry Cathedral, Coventry Telegraph, Coventry University, Decibel, Diesel engine, Discovery Channel, Dissipation, Doubleday (publisher), Eardrum, Earthquake, Edinburgh Castle, Electret microphone, Electromagnetic radiation, Elephant, Equal-loudness contour, Explosion, Felidae, Fencing, Feraliminal Lycanthropizer, Foil (fencing), Forensic seismology, Giraffe, Graz, Helmholtz resonance, Hertz, Hippopotamus, Homing pigeon, Hydrophone, Ibaraki University, Ice calving, ..., Iceberg, Johnson–Nyquist noise, Langley Research Center, Lee wave, Lightning, List of reportedly haunted locations, Loudspeaker, Meteoroid, Microbarom, Microbarometer, Motion sickness, National Oceanic and Atmospheric Administration, National Physical Laboratory (United Kingdom), National Science Foundation, Navigation, Nonlinear system, Nuclear explosion, Okapi, Organ pipe, Pipe organ, Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization, Psychologist, Purcell Room, Purr, Radionuclide, Resonance, Rhinoceros, Richard Wiseman, Roar (vocalization), Rotary woofer, Seismology, Severe weather, Sine wave, Society for Psychical Research, Sonic boom, Sonic weapon, Sound pressure, Standing wave, Subcontrabass tuba, Subwoofer, Sumatran rhinoceros, Supernatural, The Hum, The Journal of Experimental Biology, Tiger, Tim Storms, Tornado, Transducer, Transmission line loudspeaker, Tuba, Turbulence, Ultrasound, University of Alaska Fairbanks, University of Hertfordshire, Upper-atmospheric lightning, Vestibular system, Vic Tandy, Vise, Vladimir Gavreau, Volcano, Warwick, Waterfall, Waveguide (acoustics), Whale, Whale vocalization, Wind turbine, Wind wave, World War I, 2004 Indian Ocean earthquake and tsunami. Expand index (69 more) »

Absolute threshold of hearing

The absolute threshold of hearing (ATH) is the minimum sound level of a pure tone that an average human ear with normal hearing can hear with no other sound present.

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African elephant

African elephants are elephants of the genus Loxodonta.

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Allies of World War I

The Allies of World War I, or Entente Powers, were the countries that opposed the Central Powers in the First World War.

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Alligator

An alligator is a crocodilian in the genus Alligator of the family Alligatoridae.

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ANSI/ASA S1.1-2013

ANSI/ASA S1.1-2013, published by the American National Standards Institute (ANSI), is the current American National Standard on Acoustical Terminology.

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Apparitional experience

In parapsychology, an apparitional experience is an anomalous experience characterized by the apparent perception of either a living being or an inanimate object without there being any material stimulus for such a perception.

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Artillery

Artillery is a class of large military weapons built to fire munitions far beyond the range and power of infantry's small arms.

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Aurora

An aurora (plural: auroras or aurorae), sometimes referred to as polar lights, northern lights (aurora borealis) or southern lights (aurora australis), is a natural light display in the Earth's sky, predominantly seen in the high-latitude regions (around the Arctic and Antarctic).

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Avalanche

An avalanche (also called a snowslide) is a cohesive slab of snow lying upon a weaker layer of snow in the snowpack that fractures and slides down a steep slope when triggered.

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Baleen whale

Baleen whales (systematic name Mysticeti), known earlier as whalebone whales, form a parvorder of the infraorder Cetacea (whales, dolphins and porpoises).

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Ballistocardiography

The ballistocardiograph (BCG) is a measure of ballistic forces on the heart.

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Bioacoustics

Bioacoustics is a cross-disciplinary science that combines biology and acoustics.

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Blaster beam

The blaster beam is a concept electronic musical instrument consisting of a 12 to long metal beam strung with numerous tensed wires under which are mounted electric guitar pickups which can be moved to alter the sound produced.

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Bolide

A bolide (French via Latin from the Greek βολίς bolís, "missile") is an extremely bright meteor, especially one that explodes in the atmosphere.

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British Science Association

The British Science Association (BSA) is a charity and learned society founded in 1831 to aid in the promotion and development of science.

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Brown note

The brown note is a hypothetical infrasonic frequency that would cause humans to lose control of their bowels due to resonance.

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Chelyabinsk meteor

The Chelyabinsk meteor was a superbolide caused by an approximately 20-metre near-Earth asteroid that entered Earth's atmosphere over Russia on 15 February 2013 at about 09:20 YEKT (03:20 UTC), with a speed of 19.16 ± 0.15 kilometres per second (60,000–69,000 km/h or 40,000–42,900 mph).

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Clear-air turbulence

Clear-air turbulence (CAT) is the turbulent movement of air masses in the absence of any visual clues, such as clouds, and is caused when bodies of air moving at widely different speeds meet.

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Collins English Dictionary

The Collins English Dictionary is a printed and online dictionary of English.

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Comprehensive Nuclear-Test-Ban Treaty

The Comprehensive Nuclear-Test-Ban Treaty (CTBT) is a multilateral treaty that bans all nuclear explosions, for both civilian and military purposes, in all environments.

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Coventry Cathedral

The Cathedral Church of St Michael, commonly known as Coventry Cathedral, is the seat of the Bishop of Coventry and the Diocese of Coventry, in Coventry, West Midlands, England.

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Coventry Telegraph

The Coventry Telegraph, which publishes online as CoventryLive, is a local English tabloid newspaper.

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Coventry University

Coventry University is a public research university in Coventry, England, known as Lanchester Polytechnic until 1987, and Coventry Polytechnic until it was awarded university status in 1992.

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Decibel

The decibel (symbol: dB) is a unit of measurement used to express the ratio of one value of a physical property to another on a logarithmic scale.

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Diesel engine

The diesel engine (also known as a compression-ignition or CI engine), named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel which is injected into the combustion chamber is caused by the elevated temperature of the air in the cylinder due to mechanical compression (adiabatic compression).

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Discovery Channel

Discovery Channel (known as The Discovery Channel from 1985 to 1995, and often referred to as simply Discovery) is an American pay television channel that is the flagship television property of Discovery Inc., a publicly traded company run by CEO David Zaslav.

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Dissipation

Dissipation is the result of an irreversible process that takes place in homogeneous thermodynamic systems.

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Doubleday (publisher)

Doubleday is an American publishing company founded as Doubleday & McClure Company in 1897 that by 1947 was the largest in the United States.

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Eardrum

In the anatomy of humans and various other tetrapods, the eardrum, also called the tympanic membrane or myringa, is a thin, cone-shaped membrane that separates the external ear from the middle ear.

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Earthquake

An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's lithosphere that creates seismic waves.

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Edinburgh Castle

Edinburgh Castle is a historic fortress which dominates the skyline of the city of Edinburgh, Scotland, from its position on the Castle Rock.

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Electret microphone

An electret microphone is a type of electrostatic capacitor-based microphone, which eliminates the need for a polarizing power supply by using a permanently charged material.

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Electromagnetic radiation

In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space-time, carrying electromagnetic radiant energy.

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Elephant

Elephants are large mammals of the family Elephantidae and the order Proboscidea.

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Equal-loudness contour

An equal-loudness contour is a measure of sound pressure (dB SPL), over the frequency spectrum, for which a listener perceives a constant loudness when presented with pure steady tones.

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Explosion

An explosion is a rapid increase in volume and release of energy in an extreme manner, usually with the generation of high temperatures and the release of gases.

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Felidae

The biological family Felidae is a lineage of carnivorans colloquially referred to as cats.

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Fencing

Fencing is a group of three related combat sports.

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Feraliminal Lycanthropizer

The Feraliminal Lycanthropizer is a fictional machine invented by American writer David Woodard, whose 1990 pamphlet of the same title speculates on its history and purpose.

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Foil (fencing)

A foil is one of the three weapons used in the sport of fencing, all of which are metal.

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Forensic seismology

Forensic seismology is the forensic use of the techniques of seismology to detect and study distant phenomena, particularly explosions, including those of nuclear weapons.

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Giraffe

The giraffe (Giraffa) is a genus of African even-toed ungulate mammals, the tallest living terrestrial animals and the largest ruminants.

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Graz

Graz is the capital of Styria and the second-largest city in Austria after Vienna.

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Helmholtz resonance

Helmholtz resonance or wind throb is the phenomenon of air resonance in a cavity, such as when one blows across the top of an empty bottle.

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Hertz

The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.

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Hippopotamus

The common hippopotamus (Hippopotamus amphibius), or hippo, is a large, mostly herbivorous, semiaquatic mammal native to sub-Saharan Africa, and one of only two extant species in the family Hippopotamidae, the other being the pygmy hippopotamus (Choeropsis liberiensis or Hexaprotodon liberiensis).

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Homing pigeon

The homing pigeon is a variety of domestic pigeon (Columba livia domestica) derived from the rock pigeon, selectively bred for its ability to find its way home over extremely long distances.

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Hydrophone

A hydrophone (Ancient Greek ὕδωρ.

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Ibaraki University

, Japan, is a national university located in Ibaraki Prefecture, with campuses in the cities of Mito, Ami and Hitachi.

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Ice calving

Ice calving, also known as glacier calving or iceberg calving, is the breaking of ice chunks from the edge of a glacier.

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Iceberg

An iceberg or ice mountain is a large piece of freshwater ice that has broken off a glacier or an ice shelf and is floating freely in open water.

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Johnson–Nyquist noise

Johnson–Nyquist noise (thermal noise, Johnson noise, or Nyquist noise) is the electronic noise generated by the thermal agitation of the charge carriers (usually the electrons) inside an electrical conductor at equilibrium, which happens regardless of any applied voltage.

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Langley Research Center

Langley Research Center (LaRC or NASA Langley) located in Hampton, Virginia, United States, is the oldest of NASA's field centers.

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Lee wave

In meteorology, lee waves are atmospheric stationary waves.

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Lightning

Lightning is a sudden electrostatic discharge that occurs typically during a thunderstorm.

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List of reportedly haunted locations

This is a list of reportedly haunted locations throughout the world, that are said to be haunted by ghosts or other supernatural beings, including demons.

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Loudspeaker

A loudspeaker (or loud-speaker or speaker) is an electroacoustic transducer; which converts an electrical audio signal into a corresponding sound.

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Meteoroid

A meteoroid is a small rocky or metallic body in outer space.

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Microbarom

In acoustics, microbaroms, also known as the "voice of the sea", are a class of atmospheric infrasonic waves generated in marine storms by a non-linear interaction of ocean surface waves with the atmosphere.

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Microbarometer

Microbarometers are sensitive barometers that can measure air pressure with high precision.

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Motion sickness

Motion sickness is a condition in which a disagreement exists between visually perceived movement and the vestibular system's sense of movement.

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National Oceanic and Atmospheric Administration

The National Oceanic and Atmospheric Administration (NOAA; pronounced, like "Noah") is an American scientific agency within the United States Department of Commerce that focuses on the conditions of the oceans, major waterways, and the atmosphere.

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National Physical Laboratory (United Kingdom)

The National Physical Laboratory (NPL) is the national measurement standards laboratory for the United Kingdom, based at Bushy Park in Teddington, London, England.

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National Science Foundation

The National Science Foundation (NSF) is a United States government agency that supports fundamental research and education in all the non-medical fields of science and engineering.

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Navigation

Navigation is a field of study that focuses on the process of monitoring and controlling the movement of a craft or vehicle from one place to another.

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Nonlinear system

In mathematics and science, a nonlinear system is a system in which the change of the output is not proportional to the change of the input.

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Nuclear explosion

A nuclear explosion is an explosion that occurs as a result of the rapid release of energy from a high-speed nuclear reaction.

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Okapi

The okapi (Okapia johnstoni), also known as the forest giraffe, congolese giraffe or zebra giraffe, is an artiodactyl mammal native to the northeast of the Democratic Republic of the Congo in Central Africa.

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Organ pipe

An organ pipe is a sound-producing element of the pipe organ that resonates at a specific pitch when pressurized air (commonly referred to as wind) is driven through it.

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Pipe organ

The pipe organ is a musical instrument that produces sound by driving pressurized air (called wind) through organ pipes selected via a keyboard.

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Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization

The Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization, CTBTO Preparatory Commission or CTBTO Prep Com is an international organization based in Vienna, Austria, that is tasked with preparing the activities of the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO).

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Psychologist

A psychologist studies normal and abnormal mental states from cognitive, emotional, and social processes and behavior by observing, interpreting, and recording how individuals relate to one another and to their environments.

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Purcell Room

The Purcell Room is a concert and performance venue which forms part of the Southbank Centre, one of central London's leading cultural complexes.

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Purr

A purr is a tonal fluttering sound made by some species of felids, and two species of genets.

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Radionuclide

A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is an atom that has excess nuclear energy, making it unstable.

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Resonance

In physics, resonance is a phenomenon in which a vibrating system or external force drives another system to oscillate with greater amplitude at specific frequencies.

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Rhinoceros

A rhinoceros, commonly abbreviated to rhino, is one of any five extant species of odd-toed ungulates in the family Rhinocerotidae, as well as any of the numerous extinct species.

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Richard Wiseman

Richard J. Wiseman (born 1966) is a Professor of the Public Understanding of Psychology at the University of Hertfordshire in the United Kingdom.

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Roar (vocalization)

A roar is a type of animal vocalization consisting of both a low fundamental frequency (pitch) and low formant frequency.

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Rotary woofer

A rotary woofer is a subwoofer-style loudspeaker which reproduces very low frequency content by using a conventional speaker voice coil's motion to change the pitch of a set of fan blades rotating at a constant speed.

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Seismology

Seismology (from Ancient Greek σεισμός (seismós) meaning "earthquake" and -λογία (-logía) meaning "study of") is the scientific study of earthquakes and the propagation of elastic waves through the Earth or through other planet-like bodies.

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Severe weather

Severe weather refers to any dangerous meteorological phenomena with the potential to cause damage, serious social disruption, or loss of human life.

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Sine wave

A sine wave or sinusoid is a mathematical curve that describes a smooth periodic oscillation.

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Society for Psychical Research

The Society for Psychical Research (SPR) is a nonprofit organisation in the United Kingdom.

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Sonic boom

A sonic boom is the sound associated with the shock waves created whenever an object traveling through the air travels faster than the speed of sound.

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Sonic weapon

Sonic and ultrasonic weapons (USW) are weapons of various types that use sound to injure, incapacitate, or kill an opponent.

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Sound pressure

Sound pressure or acoustic pressure is the local pressure deviation from the ambient (average or equilibrium) atmospheric pressure, caused by a sound wave.

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Standing wave

In physics, a standing wave – also known as a stationary wave – is a wave which oscillates in time but whose peak amplitude profile does not move in space.

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Subcontrabass tuba

The subcontrabass tuba is an extension of the tuba family within the modern contrabass tuba.

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Subwoofer

A subwoofer (or sub) is a woofer, or a complete loudspeaker, which is dedicated to the reproduction of low-pitched audio frequencies known as bass and sub-bass.

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Sumatran rhinoceros

The Sumatran rhinoceros, also known as the hairy rhinoceros or Asian two-horned rhinoceros (Dicerorhinus sumatrensis), is a rare member of the family Rhinocerotidae and one of five extant rhinoceroses.

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Supernatural

The supernatural (Medieval Latin: supernātūrālis: supra "above" + naturalis "natural", first used: 1520–1530 AD) is that which exists (or is claimed to exist), yet cannot be explained by laws of nature.

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The Hum

The Hum is a phenomenon, or collection of phenomena, involving widespread reports of a persistent and invasive low-frequency humming, rumbling, or droning noise not audible to all people.

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The Journal of Experimental Biology

The Journal of Experimental Biology is a peer-reviewed scientific journal in the field of comparative physiology and integrative biology.

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Tiger

The tiger (Panthera tigris) is the largest cat species, most recognizable for its pattern of dark vertical stripes on reddish-orange fur with a lighter underside.

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Tim Storms

Tim Storms (born August 28, 1972) is an American singer and composer.

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Tornado

A tornado is a rapidly rotating column of air that is in contact with both the surface of the Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud.

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Transducer

A transducer is a device that converts energy from one form to another.

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Transmission line loudspeaker

A transmission line loudspeaker is a loudspeaker enclosure design (topology) that uses an acoustic transmission line within the cabinet, compared to the simpler enclosures used by sealed (closed) or ported (bass reflex) designs.

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Tuba

The tuba is the largest and lowest-pitched musical instrument in the brass family.

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Turbulence

In fluid dynamics, turbulence or turbulent flow is any pattern of fluid motion characterized by chaotic changes in pressure and flow velocity.

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Ultrasound

Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing.

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University of Alaska Fairbanks

The University of Alaska Fairbanks (also referred to as UAF or Alaska) is a public research university in Fairbanks, Alaska, United States.

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University of Hertfordshire

The University of Hertfordshire is a university in Hertfordshire, United Kingdom.

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Upper-atmospheric lightning

Upper-atmospheric lightning or ionospheric lightning are terms sometimes used by researchers to refer to a family of short-lived electrical-breakdown phenomena that occur well above the altitudes of normal lightning and storm clouds.

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Vestibular system

The vestibular system, in most mammals, is the sensory system that provides the leading contribution to the sense of balance and spatial orientation for the purpose of coordinating movement with balance. Together with the cochlea, a part of the auditory system, it constitutes the labyrinth of the inner ear in most mammals.

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Vic Tandy

Vic Tandy (1955 – 23 July 2005) was a British lecturer for information technology at Coventry University in Warwickshire and an engineer.

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Vise

A vise (American English) or vice (British English) is a mechanical apparatus used to secure an object to allow work to be performed on it.

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Vladimir Gavreau

Vladimir Gavreau, born Vladimir Gavronsky (died between 1968 and 1972), was a French scientist making experiments on the biological effects of infrasound.

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Volcano

A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.

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Warwick

Warwick is the county town of Warwickshire, England.

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Waterfall

A waterfall is a place where water flows over a vertical drop or a series of steep drops in the course of a stream or river.

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Waveguide (acoustics)

An acoustic waveguide is a physical structure for guiding sound waves.

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Whale

Whales are a widely distributed and diverse group of fully aquatic placental marine mammals.

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Whale vocalization

Whale sounds are used by whales for different kinds of communication.

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Wind turbine

A wind turbine is a device that converts the wind's kinetic energy into electrical energy.

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Wind wave

In fluid dynamics, wind waves, or wind-generated waves, are surface waves that occur on the free surface of bodies of water (like oceans, seas, lakes, rivers, canals, puddles or ponds).

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World War I

World War I (often abbreviated as WWI or WW1), also known as the First World War, the Great War, or the War to End All Wars, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918.

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2004 Indian Ocean earthquake and tsunami

The 2004 Indian Ocean earthquake occurred at 00:58:53 UTC on 26 December with the epicentre off the west coast of Sumatra, Indonesia.

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Infrasonic, Infrasonic Sound, Infrasonic sound, Infrasonic wave, Infrasonics, Low frequency sound.

References

[1] https://en.wikipedia.org/wiki/Infrasound

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