Some 40% of aerosols in the troposphere (the lowest layer of Earth’s atmosphere) are dust particles from wind erosion. They are not usually found in dry climates. [OED] An example from OED: Moving freely about like the motes we see in the sunbeam. Those are the big particles. In an aerial ballet too massive to describe, the countless crystals dance along the wind currents and bow to their partners, and the sunbeams dance with them. senses, so that those bodies are in motion that we see in sunbeams, moved by blows that remain invisible. People often ask why spider webs and dust can be seen on the fans. Why doesn't it eventually fall down? I loved watching the small particles moving around in the path of the light, called motes. Dust mites live and multiply easily in warm, humid places. Your inability to see the dust until you narrow the slit has nothing to do with the narrowness of the beam but instead the dynamic range of light that your eye can see at one time.. A bit of searching turns up reports of a contrast ratio for you eye at one time as between 100:1 and 1000:1. Held together by static electricity, dust bunnies often start as one large particle and collect other smaller particles as they travel across flat surfaces.
He said that it was a statistical effect of a large number of gas molecules bouncing off of each dust particle that made it zig and zag randomly in the air. one of the innumerable minute specks seen floating in a beam of light; (contextually) an irritating particle in the eye or throat.
I remember watching them as a young girl, with delight. “Rail Dust” describes specs of any ferrous material that lands on a car’s painted surface and creates orange dots of rust. Re: pool dust solved, A thanks will do! In 1905, Einstein explained this motion of dust particles, that was already knows as Brownian Motion. The more dangerous type of dust, the tiny particles that can lodge in your lungs and wreak havoc, are about .3 microns in size. What is rail dust? The size of dust particles.
The word dust is an umbrella term to define a collection of particles that include pollen, dead skin cells from humans and animals, broken hair pieces from humans and animals, particles of burnt ash, fibres of textiles and paper etc. But they must understand that there is a lot of dust in the circulating air." Dust is heavier than air. The dust that you can see is about 10 microns in diameter. 1880, W. Wallace, Epicureanism They were particles dancing in the air, feeling the glow of the morning sunlight. Dust mite particles are often found in pillows, mattresses, carpeting and upholstered furniture. Post by rozebudd » Fri 01 Jun, 2007 12:41 Debbie, I started having this same problem last year, and I also have so far spend hundreds trying to rid my pool pf this "mysterey" mustard algea, to NO avail either!