Search results
- Dictionarydust/dʌst/
noun
- 1. fine, dry powder consisting of tiny particles of earth or waste matter lying on the ground or on surfaces or carried in the air: "the car sent up clouds of dust" Similar
- 2. an act of dusting: "a quick dust, to get rid of the cobwebs"
verb
- 1. remove the dust or dirt from the surface of (something) by wiping or brushing it: "I broke the vase I had been dusting" Similar
- 2. cover lightly with a powdered substance: "roll out on a surface dusted with icing sugar" Similar
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Jun 20, 2024 · PM stands for particulate matter (also called particle pollution): the term for a mixture of solid particles and liquid droplets found in the air. Some particles, such as dust, dirt, soot, or smoke, are large or dark enough to be seen with the naked eye. Others are so small they can only be detected using an electron microscope.
4 days ago · Dust is the accumulation of microscopic particles that float around in the air and land on surfaces. For aesthetic reasons, dust is unsightly and makes a space look and feel filthy. Beyond its unsightliness, and perhaps more importantly, breathing in dust particles is harmful.
Jun 19, 2024 · Dust Bowl, name for both the drought period in the Great Plains that lasted from 1930 to 1936 and the section of the Great Plains of the United States that extended over southeastern Colorado, southwestern Kansas, the panhandles of Texas and Oklahoma, and northeastern New Mexico.
Jun 20, 2024 · The air we breathe indoors and outdoors always contains particle pollution. Some particles, such as dust, dirt, soot, or smoke, are large enough to be seen with the naked eye. Others are so small they can only be detected using an electron microscope (Figure 1).
Nov 27, 2019 · Dust is Particulate Matter (PM) measured in microns (μm) which are one thousandth (10 −3) of a millimeter or one millionth (10 −6) of a meter. A dust particle size of 200μm is small enough to remain airborne, but once it reaches below 100μm, it becomes harder to see with the naked eye.
4 days ago · Airborne suspensions of extremely small solid or liquid particles called “particulates” (e.g., soot, dust, smokes, fumes, mists), especially those less than 10 micrometres (μm; millionths of a metre) in size, are significant air pollutants because of their very harmful effects on human health.
Jun 14, 2024 · aerosol, a system of liquid or solid particles uniformly distributed in a finely divided state through a gas, usually air. Aerosol particles, such as dust, play an important role in the precipitation process, providing the nuclei upon which condensation and freezing take place.
Jun 20, 2024 · Solid materials suspended in the atmosphere in the form of small, irregular particles, many of which are microscopic in size. Dust and Ash are due to biogenic and anthropogenic sources such as volcanic eruptions, salt spray, plant pollen, smoke, industrial processes, etc.
Jun 28, 2024 · Bitcoin dust refers to the very small amounts of bitcoin leftover or unspent in a transaction that is lower in value than the minimum limit of a valid transaction.
4 days ago · You’re listening to The English We Speak from BBC Learning English, and we’re talking about the expression ‘gathering dust’. We use this expression to say that something hasn’t been...
