Diamond dust is similar to fog in that it is a cloud based at the surface; however, it differs from fog in two main ways. Definitions by the largest Idiom Dictionary. What does dust expression mean? Sometimes clouds linger for a while, filling up the sky so you can’t see the sun. The smallest concentration (kg of powder / m3) below which the explosion cannot happen is … That might mean that the dust cloud that hits the United States will be far more intense than usual, and that health effects due to the cloud might be more severe. 2) Clouds are transient. Sometimes they form out of vapor and then an errant gust of wind scatters them into nothing again just minutes later. 3. Hence a continuous source of new particles is needed to maintain the zodiacal cloud. Dust cloud:Dust storms can rise miles above the earth and spread thousands of miles wide and few miles high can travel around the globe and deposit in either ocean or elsewhere after several day dust phrase. The cloud of dust is the result of atmospheric conditions in the Sahara at this time of year. The Poynting–Robertson effect forces the dust into more circular (but still elongated) orbits, while spiralling slowly into the Sun. The Harmattan brings desert-like weather conditions: it lowers the humidity, dissipates cloud cover, prevents rainfall formation and sometimes creates big clouds of dust which can result in dust storms or sandstorms. Clouds can come and go quickly, like they’re late for a date with a cute cloud far away. That might mean that the dust cloud that hits the United States will be far more intense than usual, and that health effects due to the cloud might be more severe. The one part of the OED definition I would like to keep is “condensed” as I think this is one of the most important ideas that will help us separate clouds from haze and dust. [citation needed] The wind can increase fire risk and cause severe crop damage. If the concentration of dust is too low or too high, explosion will not happen. Definition of dust in the Idioms Dictionary. A dust cloud can explode only if there is the right proportion of powder in suspension in air. Dust - Idioms by The Free Dictionary ... and merged their individuality again in a receding multitude that was swallowed up at last in a cloud of dust. With motions born of long practice in virtuals, Red started actively pinging the area and accelerated towards the dust-cloud and the covert ops pilot that had just made such a silly mistake. The "Godzilla" dust cloud from the Sahara heading towards the southeastern U.S. is one of the biggest recorded for 50 years. Generally fog refers to a cloud composed of liquid water (the term ice fog usually refers to a fog that formed as liquid water and then froze, and frequently seems to occur in valleys with airborne pollution such as Fairbanks, Alaska, while diamond dust forms directly as ice). Divorce, as Theodor Adorno observed, even between good-natured, amiable, educated people, is apt to stir up a dust-cloud that covers and discolours all it touches.. Divorce, American Style. I would define cloud as “a visible mass of liquid and/or solid particles suspended in an atmosphere that form from condensation of atmospheric gases.” The cloud has yet to disintegrate over the Caribbean sea, as you can see by the low visibility in the islands, while visibility in Trinidad and Tobago is limited to half a mile.