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gerontius grumpus
43940.  Sat Jan 07, 2006 4:09 pm Reply with quote

Perhaps the feather mites chase them away.

Rory Gilmore
43943.  Sat Jan 07, 2006 4:20 pm Reply with quote

Or they build little wings and leave?

gerontius grumpus
43946.  Sat Jan 07, 2006 4:28 pm Reply with quote

They'll have to be careful not to fly too close to the bedside lamp.

Rory Gilmore
43952.  Sat Jan 07, 2006 4:42 pm Reply with quote

Or to the drink spilt on the floor.

43959.  Sat Jan 07, 2006 4:49 pm Reply with quote

Creepy-looking little buggers though, aren't they?

43961.  Sat Jan 07, 2006 4:53 pm Reply with quote

Some things you probably don't want to know about dust mites:

House dust mites are not visible without at least 10X magnification, as they are only 250 to 300 microns in length and have translucent bodies.

Beds are a prime habitat for them - a typical used mattress may have anywhere from 100,000 to 10 million mites inside. They prefer warm, moist surroundings such as the inside of a mattress when someone is on it.

Ten percent of the weight of a two year old pillow can be composed of dead mites and their droppings.

The mites' favourite food is dander (both human and animal skin flakes). Humans shed about 1/5 ounce of dander (dead skin) each week. About 80 percent of the material seen floating in a sunbeam is actually skin flakes.

Source -

Last edited by Jenny on Sat Jan 07, 2006 6:32 pm; edited 1 time in total

Rory Gilmore
43962.  Sat Jan 07, 2006 4:54 pm Reply with quote

Jenny wrote:
Creepy-looking little buggers though, aren't they?
Yeah, you wouldn't trust one with your gran, that's for sure. What size are they in, like, non-microns? Oh right, it means micrometre.

Last edited by Rory Gilmore on Sat Jan 07, 2006 5:09 pm; edited 2 times in total

43963.  Sat Jan 07, 2006 4:55 pm Reply with quote

See post 43961

Last edited by Jenny on Sat Jan 07, 2006 6:28 pm; edited 1 time in total

Rory Gilmore
43964.  Sat Jan 07, 2006 4:57 pm Reply with quote

The Aral Sea...
Did you mean for that?

43996.  Sat Jan 07, 2006 6:29 pm Reply with quote

Sorry Rory - I realised I'd got the number wrong (why can't you cut and paste numbers into that link box, I wonder?) - I've edited it now.

Rory Gilmore
44584.  Tue Jan 10, 2006 12:13 pm Reply with quote

Another thing about dust-mites: The allergic reaction is caused not by the mites directly, but by a substance found in their shit.

44585.  Tue Jan 10, 2006 12:18 pm Reply with quote

It's STILL linking to 36116 though (The Dead Sea).

Don't ask me why but it is, damn its eyes.

Rory Gilmore
44592.  Tue Jan 10, 2006 12:46 pm Reply with quote

It's the same place as before, but further up the road. I mean, page.

44694.  Tue Jan 10, 2006 8:43 pm Reply with quote

Very odd. The post I was trying (and evidently failing) to link to was the one just under the picture though.

47070.  Sat Jan 21, 2006 5:20 pm Reply with quote

Another kind of dust completely, but there might be a link to dust mites.

Nasa's Stardust probe has recently captured grains of dust from comet Wild 2 using a substance called aerogel, otherwise known as 'frozen smoke' or 'glass foam'.

Like glass, it is made of silicon oxide, but it's 1000 times less dense than glass - in fact 99.8% air - and is the lowest-density solid in existence. A gram of it can spread out over 3000 square metres. However, it can hold up more than 4000 times its own weight. It is also almost 40 times better than fibreglass at insulating heat and sound. A one-inch thick pane can insulate as well as 15 panes of glass with air trapped between them.

The reason it was used by Stardust is that the density is so low that it could slow down and capture comet dust without damaging it. Other materials would have caused the dust to vapourise or change shape but aerogel allowed the dust to make tracks and embed itself.

Aerogel was invented by Steven S Kistler of the College of the Pacific in Stockton, California, in the 1930s but disregarded until scientists needed something in which to store rocket fuel.

Source - today's Guardian.


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