h a l f b a k e r yAsk your doctor if the Halfbakery is right for you.
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So, in countries where air is polluted, people
traditionally use the full face masks, which (though good
for anonymity) are inconvenient:
- do not attach tightly
- they get wet from breathing
An elegant solution -- nasal masks (like the "Nasal-Aire II"
- link), and a filter on the
back of the clothes, or in the
backpack.
However, it leaves the tubes obviously visible on the
cheeks. So, a version of it -- eyeglasses that have the
breathing tubes inside their frames.
Nasal-Aire II
http://www.cpapxcha...p-mask-innomed.html
[Mindey, Jan 02 2015]
Nasal cannula
http://en.wikipedia.../wiki/Nasal_cannula
For medical use. [8th of 7, Jan 03 2015]
Japanese etc
http://bella-ts.dev...able-item-435558468
[not_morrison_rm, Jan 03 2015]
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Those side-pieces are going to be pretty big. A BA hose is about
40mm i.d., and the main objective is to keep the flow resistance as
low as practicable. |
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Small tubes mean higher pressures and velocities,therefore higher
losses. |
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Only gets a bun if they come with big eyebrows and moustache a la Groucho Marx. |
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S'pose you could do fake noseless one for the Voldemort look. |
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[+] but with Groucho glasses, a nasal exhale can flutter the eyebrows, suggestively. |
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This idea can be workable if the filtered air is supplied at positive
pressure via a demand-valve regulator. |
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That means the filter unit in the backpack is going to need a
blower motor and a battery, but such things already exist for
industrial use, in welding helmets and dust masks. |
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This would also be of considerable benefit to hayfever sufferes. If
the "glasses" are more like goggles, they will keep pollen-bearing
air away from the eyes, and the wearer can breathe filtered air. |
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Predictable Japanese anti-hayfever headwear wot I found in Akihabara, see link to photo. Most inconspicuous. Hardly a patch on the "Survive Toilet Panic" bag the council gave me when I registered at city hall. Happier days. |
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// the "Survive Toilet Panic" bag the council gave me // |
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You can't just leave it at that - explain. |
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