Search results
Results from the WOW.Com Content Network
A fire whirl, fire devil or fire tornado is a whirlwind induced by a fire and often (at least partially) composed of flame or ash. These start with a whirl of wind , often made visible by smoke , and may occur when intense rising heat and turbulent wind conditions combine to form whirling eddies of air.
The vortex trails produced as the wind passes over a rope produce a sound with a frequency that varies with the velocity of the wind and the thickness of the rope. [ citation needed ] Each doubling of the wind velocity results in an octave increase in the tone, allowing up to a six octave variation in a strong, gusty wind.
De Motu may have been originally intended for publication, but Galileo eventually abandoned it in an incomplete form. What remains now includes a first draft essay on motion, several reworked portions of the essay, a dialogue, a set of topics and propositions, and a series of fragmentary thoughts, notes, and memoranda.
[failed verification] Violent, erratic wind drafts suck movables into the fire and as is observed with all intense conflagrations, radiated heat from the fire can melt some metals, glass, and turn street tarmac into flammable hot liquid. The very high temperatures ignite anything that might possibly burn, until the firestorm runs low on fuel.
A whirlwind A dust devil at school ground Whirlwind, 61 km northeast of Broome, Western Australia. A whirlwind is a phenomenon in which a vortex of wind (a vertically oriented rotating column of air) forms due to instabilities and turbulence created by heating and flow gradients.
Mandatory evacuation orders are in effect in several zones, according to Cal Fire — California's wildfire-fighting agency — which said on its website the fast-moving blaze represented "an ...
At one point, the tornado was moving with a forward speed of 73 miles per hour (117 km/h), setting the record as the fastest forward moving violent tornado in history. The tornado also became the deadliest tornado in United States history as well as the longest traveled tornado in history.
During extreme cold events, you may hear a loud boom and feel like you have experienced an earthquake. However, this event was more likely a cryoseism, also known as an ice quake or a frost quake ...