Name:	GoneFishin -	Reply
Subject:	Florida Atlantic Univ Visual On Mask and Coughing
Date:	7/1/2020 11:08:27 PM

Interesting Coughing With and Without Mask

Research from Florida Atlantic University’s College of Engineering and Computer Science, just published in the journal Physics of Fluids , demonstrates through visualization of emulated coughs and sneezes, a method to assess the effectiveness of facemasks in obstructing droplets. The rationale behind the recommendation for using masks or other face coverings is to reduce the risk of cross-infection via the transmission of respiratory droplets from infected to healthy individuals.

Researchers employed flow visualization in a laboratory setting using a laser light sheet and a mixture of distilled water and glycerin to generate the synthetic fog that made up the content of a cough-jet. They visualized droplets expelled from a mannequin’s mouth while simulating coughing and sneezing. They tested masks that are readily available to the general public, which do not draw away from the supply of medical-grade masks and respirators for healthcare workers. They tested a single-layer bandana-style covering, a homemade mask that was stitched using two-layers of cotton quilting fabric consisting of 70 threads per inch, and a non-sterile cone-style mask that is available in most pharmacies. By placing these various masks on the mannequin, they were able to map out the paths of droplets and demonstrate how differently they perform.

Results showed that loosely folded facemasks and bandana-style coverings stop aerosolized respiratory droplets to some degree. However, well-fitted homemade masks with multiple layers of quilting fabric, and off-the-shelf cone style masks, proved to be the most effective in reducing droplet dispersal. These masks were able to curtail the speed and range of the respiratory jets significantly, albeit with some leakage through the mask material and from small gaps along the edges.

Importantly, uncovered emulated coughs were able to travel noticeably farther than the currently recommended 6-foot distancing guideline. Without a mask, droplets traveled more than 8 feet; with a bandana, they traveled 3 feet, 7 inches; with a folded cotton handkerchief, they traveled 1 foot, 3 inches; with the stitched quilted cotton mask, they traveled 2.5 inches; and with the cone-style mask, droplets traveled about 8 inches.  

Name:	weagle74 -	Reply
Subject:	Florida Atlantic Univ Visual On Mask and Coughing
Date:	7/2/2020 8:54:52 AM

So, just curious.... Most people turn away and cover their mouths when coughing or sneezing rather than just expelling willy-nilly into the surrounding environment. I wonder if they tested that very common method of protecting others? Obviously, if you're in a crowded situation that won't allow you to turn away from others, the effectiveness would be greatly diminished.

Name:	RHH -	Reply
Subject:	Florida Atlantic Univ Visual On Mask and Coughing
Date:	7/2/2020 11:07:55 AM

Thank you for posting this well documented experiment. Wearing any kind of mask protects OTHERS (in varying degrees) from exposure to viral particles from asymptomatic or presymptomatic individuals.  I can't understand why people like MM continue to argue the point. Is it lack of giving a damn about others or some kind of perverse allegiance to the POTUS? Likely both.

Name:	CRD -	Reply
Subject:	Florida Atlantic Univ Visual On Mask and Coughing
Date:	7/2/2020 2:19:24 PM

Respectfully, likely neither.  Please refer to my comments in previous thread.

Name:	architect -	Reply
Subject:	Florida Atlantic Univ Visual On Mask and Coughing
Date:	7/2/2020 9:27:22 PM (updated 7/2/2020 9:31:46 PM)

I guess MM, CRD, Carlson and the other Trumpistas will now turn against their own...Gov. Abbott of TX has sold out to the believers in science and against the ''know nothings'' and mandated all Texans wear face masks in public!

PS:  To answer your question RHH, it has everything to do with MM and his fellow travelers being 100% Trump Personalty Cultists and nothing else.  If Trump appears on TV tomorrow wearing a mask and mandates all his followers to do the same they will all turn on a dime!

Name:	CRD -	Reply
Subject:	Florida Atlantic Univ Visual On Mask and Coughing
Date:	7/3/2020 9:10:39 PM

Just wished that one, merely one, of the left's leadership would have stepped up like Abbott and at least tried to stop a super spreader event like the protests/riots/looting/vandalism/murder in Minneapolis, Atlanta, Washington DC, Seattle, NYC.  But the sad fact, is that your dear leader Biden is holed up in his basement, a slave to his radical left, Pelosi is a slave to AOC and Chucky Schumer is Cuomo's beetch.  And you think that the GOP has problems?

Name:	RHH -	Reply
Subject:	Florida Atlantic Univ Visual On Mask and Coughing
Date:	7/3/2020 9:22:00 PM

No. I think you have a problem with masks that you can't defend so you change the subject.

Name:	Lifer -	Reply
Subject:	Florida Atlantic Univ Visual On Mask and Coughing
Date:	7/3/2020 9:51:33 PM

The only doctor on the forum and you think you know more about masks.  He is a surgeon so he spend most of his life in mask in contolled environments to decrease infection.  

Name:	RHH -	Reply
Subject:	Florida Atlantic Univ Visual On Mask and Coughing
Date:	7/3/2020 11:11:59 PM

The only doctor? I think not.

Name:	CRD -	Reply
Subject:	Florida Atlantic Univ Visual On Mask and Coughing
Date:	7/4/2020 12:19:05 AM

Very willing to engage in debate regarding masks.  I, in my earlier post in this thread was responding to Archie's comment.  Follow along RHH, it is not that difficult.

Name:	Lifer -	Reply
Subject:	Florida Atlantic Univ Visual On Mask and Coughing
Date:	7/4/2020 6:21:41 AM

Thats right you CLAIM to be a doctor but like your political arguments, its just not belivable. 

Name:	RHH -	Reply
Subject:	Florida Atlantic Univ Visual On Mask and Coughing
Date:	7/4/2020 7:27:11 AM

That's right. Keep thinking that I'm just Goofy, Archie, Copper, John Doe etc...And keep believing  that this little cloistered forum group that reaffirms your narrow minded positions is the real world.

Name:	MartiniMan -	Reply
Subject:	Florida Atlantic Univ Visual On Mask and Coughing
Date:	7/4/2020 10:04:43 AM

RHH is scientifically illiterate and a sheeple.  He thinks masks protect us but never seems to say why if he is wearing a mask he should care about whether others do.  Does he think the aerosols only go in one direction?  Does he only exhale?  You just can't use logic with people like this.  Trust me, whatever Trump says, people with TDS are going to say the opposite.