Belly button fluff

bolo said:
I've just cleaned out the filter on our tumble drier and it was jam-packed with blue fluff. And I always thought that my wife used a towel after her shower!
Pray tell, what're you doing near a tumble drier if you have a wife? ;)
 
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Wife works, I dont. And it was peeing down at the time! But don't feel sorry for me because being a house husband is the best job in the world. Housework from 9 to 10.30am then snooker from 11 until 2.30. Then sit back for an hour until the wife and kids come home when I totally chill out for the rest of the day!
 
fluff appears blue from white shirts etc because modern washing powders contain "blueing agents" to make whites appear more white..
they reflect more light making shirts seem whiter when in fact they are a little blue'r...

this is also the reason for the little white flecks that appear on dark clothes under UV light..
 
ColJack said:
fluff appears blue from white shirts etc because modern washing powders contain "blueing agents" to make whites appear more white..
they reflect more light making shirts seem whiter when in fact they are a little blue'r...
Where've you got this from? :confused:
 
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This from the same web page as the picture came from:

Where does navel fluff come from?
Michael Biesecker wrote an interesting article on navel fluff in the 19/4/95 edition of Technician, accessed via North Carolina State University library. In it he discusses the widely held belief that navel fluff forms when very tiny pieces of fibre break off the inside of clothing. These tiny fibres gather in the belly button and amalgamate into balls of lint.

He observes that the colour of navel fluff varies amongst different people, and that those who habitually wear clothes of a similar colour tend to produce fluff related to that colour. However, those who wear a variety of colours usually end up with fluff of a grayish blue colour similar to the lint found in the lint filters of clothes driers. This colour is most likely an average of all clothing colours worn.

Those with hairy stomachs tend to generate more fluff, as abdominal hair is alleged to assist with dislodging fibres from clothes then collecting and channelling them into the navel. Also those with larger bellies often experience greater volumes of fluff - possibly due the tendency of large stomachs to possess deeper navels, thus a larger space for the lint to lodge in.

But how does it accumulate in the navel? Dr Donald E. Smith remarks that navels may possess a moist and sticky secretion that catches whatever lands nearby. On the other hand, Dr Bhupendar S. Gupta, whose doctorate is in the study of textile fibres, attributes the accumulation of navel fluff to the stomach's "microclimate" - where the flow of air between clothing and the abdomen carries small lint particles that get lodged in the navel.

Probably the best investigation into navel fluff was conducted by Dr Karl Kruszelnicki of the University of Sydney. He devotes a whole chapter to it in his popular science book "Q&A With Dr K" (Harper Collins Publishers 2001). The role of abdominal hair in dislodging and channelling clothing fibres is confirmed, but he also suggests the type of washing machine can also play a role. Apparently top-loading machines are not as gentle as front-loaders, leading to greater quantities of dislodged fibres, many of which remain in the clothing and cause greater accumulation in the navel. He also found that a well developed "snail-trail" - hair connecting the pubic hair to the navel - also encourages lint in the belly.


So, maybe those who no longer suffer from it have changed their washing machine...?
 
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