The current physical distancing guidelines provided by the World Health Organisation (WHO) and by the US Centers for Disease Control and Prevention (CDC) may not be adequate to curb the coronavirus spread, according to a research which says the gas cloud from a cough or sneeze may help virus particles travel up to 8 metres. The research, published in the Journal of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.
Study author, MIT associate professor Lydia Bourouiba, warned that droplets of all sizes can travel 23 to 27 feet, or 7-8 metres, carrying the pathogen.
According to Bourouiba, the current guidelines are based on "arbitrary" assumptions of droplet size, "overly simplified", and "may limit the effectiveness of the proposed interventions" against the deadly pandemic.
She explained that the old guidelines assume droplets to be one of two categories, small or large, taking short-range semi-ballistic trajectories when a person exhales, coughs, or sneezes.
However based on more recent discoveries, the MIT scientist said, sneezes and coughs are made of a puff cloud that carries ambient air, transporting within it clusters of droplets of a wide range of sizes.
Bourouiba warned that this puff cloud, with ambient air entrapped in it, can offer the droplets moisture and warmth that can prevent it from evaporation in the outer environment.
"The locally moist and warm atmosphere within the turbulent gas cloud allows the contained droplets to evade evaporation for much longer than occurs with isolated droplets," she said.
"Under these conditions, the lifetime of a droplet could be considerably extended by a factor of up to 1000, from a fraction of a second to minutes," the researcher explained in the study.
The MIT scientist, who has researched the dynamics of coughs and sneezes for years, added that these droplets settle along the trajectory of a cough or sneeze contaminating surfaces, with their residues staying suspended in the air for hours.
"Even when maximum containment policies were enforced, the rapid international spread of COVID-19 suggests that using arbitrary droplet size cutoffs may not accurately reflect what actually occurs with respiratory emissions, possibly contributing to the ineffectiveness of some procedures used to limit the spread of respiratory disease," Bourouiba wrote in the study
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If we Muslims bow down , We bow down to only the lord of the worlds, a creator who created U, me and all that exists.
We must bow down in humility to Almighty God only, not his creation which is man made.
Physically we should bow down somewhere, and naturally to some direction. If we were to do it right now, we would be bowing towards a random direction. our physical presence on earth forces this upon us as a prostrating Believer to GOD almighty, whether you like it or not.
The bowing down to God Almighty in the direction of the KAABA or the city of Mecca in general is a way to UNIFY all MUSLIMS to bow down to God Almighty, as one body and one unity, towards ONE DIRECTION & towards the mosque.
As to WORSHIPING the cubic black bldg. the Kaaba, We absolutely DO NOT WORSHIP IT.
I will repeat what aharkul mentioned : Umar RA came near the black stone and kissed it and said \ NO doubt, I know that YOU are a STONE and Can neither Benefit anyone NOR Harm anyone. Had i not seen ALLAH's apostel (Prophet Muhammed pbuh) kissing you, I would not have kissed YOU.
While there are traditions about kissing or touching the stone, its real significance is a MARKER of the point at which one starts the tawaaf (Circumambulation) .. A stone is just a stone."
Mr. Nothing But True, Listen Why Muslim Kissing the black stone in KAABHA because our Great Prophet (S.A) kissed the black stone which is braught from Heavan by Angels. Becuase of this only all Muslim Brother's and Sisters kissing Black Stone of Kaabha following the sunnah of Our Prophet (S.A.) Nothing Else.
Umer (R.A) before kissing the black stone said that there is no any special with you . I am kissing because our prophet (S.A.) kissed you. So Everyone should worship one god and not the creation.
Mr. Reality..you look like \Shishlya\" of Mr. Zoker Naik..before preaching others about Creator and Creation, why can't you apply this principle to yourself? WHY ARE YOU KNEELING TOWARDS AND KISSING \"THE BLACK STONE\" IN KAABA? Please throw the stone to Garbage..."
NA TASYA PRATIMA ASTI... There is no image of God
Bhagwad Geeta says in Chapter 7 Verse 20.
Those whose intelligence has been STOLEN by MATERIAL desires WORSHIP demigods besides the TRUE GOD.
It is mentioned in chandogya upanishad, Propathaka chapter 6, Khanda seciton 2, Shloka
EKAM EVADITIYAM : He is ONE only without a second.
Then Y are worshiping idols and different man made creative gods which cannot help themselves.. How can you guys not using your intellect when your OWN SCRIPTURES says not to DO SO>>>
Its HIgh time hindu brothers should know the REALITY and consequences it will take when we ignore the CREATOR and worship the CREATION.
WORSHIP THE CREATOR NOT HIS CREATION.
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