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Saharanpur (Uttar Pradesh), May 19: Islamic seminary Darul Uloom Deoband has issued a fatwa asking Muslims to offer their Eid prayers this time at home, instead of congregating at mosques.

The directive comes amid a nationwide lockdown to slow down the spread of coronavirus.

Despite the relaxations announced in the lockdown, religious and other large gatherings are still banned.

The fatwa was issued in response to a query put to the seminary, its spokesman Ashraf Usmani said.

The fatwa said the Eid namaz can be offered in the same manner that the Friday prayers are now being read at home.

It said not holding the namaz in the usual manner is pardonable in circumstances such as these.

New Delhi, Mar 26: While the humans are on lockdown and spending time with their families, animals are free and without any fear roaming around on the otherwise busy roads. From Malabar civets to large Indian bisons, animals are enjoying this time.

Indian Forest Officer Susanta Nanda recently shared a video with the caption, "Indian bison( the gaur) goes for a street walk. The largest extant Bovine, is native to South and Southeast Asia. It can be very aggressive. Rare to see in markets."

The 8-second video shows the large animal freely walking in the market area of Chikmagalur district, Karnataka, while the few onlookers on the road get aside and watch the Bison with utmost amazement.

The videos of animals having a gala time on the roads have become common. After the video was posted online, it became a hit. The clip garnered over 3.1k views and over 100 retweets.

Twitter is amazed at the video. Have a look at the comments.

One user wrote, "Oh! We should vacate this place for them. Guess humans have stayed for too long."

Another Twitter user wrote, "That’s one thing people would follow social distancing with!"

London, May 20: The current physical distancing guidelines of 6 feet may be insufficient to prevent COVID-19 transmission, according to a study which says a mild cough in low wind speeds can propel saliva droplets by as much as 18 feet.

Researchers, including those from the University of Nicosia in Cyprus, said a good baseline for studying the airborne transmission of viruses, like the one behind the COVID-19 pandemic, is a deeper understanding of how particles travel through the air when people cough.

In the study, published in the journal Physics of Fluids, they said even with a slight breeze of about four kilometres per hour (kph), saliva travels 18 feet in 5 seconds.

"The droplet cloud will affect both adults and children of different heights," said study co-author Dimitris Drikakis from the University of Nicosia.

According to the scientists, shorter adults and children could be at higher risk if they are located within the trajectory of the saliva droplets.

They said saliva is a complex fluid, which travels suspended in a bulk of surrounding air released by a cough, adding that many factors affect how saliva droplets travel in the air.

These factors, the study noted, include the size and number of droplets, how they interact with one another and the surrounding air as they disperse and evaporate, how heat and mass are transferred, and the humidity and temperature of the surrounding air.

In the study, the scientists created a computer simulation to examine the state of every saliva droplet moving through the air in front of a coughing person.

The model considered the effects of humidity, dispersion force, interactions of molecules of saliva and air, and how the droplets change from liquid to vapour and evaporate, along with a grid representing the space in front of a coughing person.

Each grid, the scientists said, holds information about variables like pressure, fluid velocity, temperature, droplet mass, and droplet position.

The study analysed the fates of nearly 1,008 simulated saliva droplets, and solved as many as 3.7 million equations.

"The purpose of the mathematical modelling and simulation is to take into account all the real coupling or interaction mechanisms that may take place between the main bulk fluid flow and the saliva droplets, and between the saliva droplets themselves," explained Talib Dbouk, another co-author of the study.

However, the researchers added that further studies are needed to determine the effect of ground surface temperature on the behaviour of saliva in air.

They also believe that indoor environments, especially ones with air conditioning, may significantly affect the particle movement through air.

This work is important since it concerns safety distance guidelines, and advances the understanding of the transmission of airborne diseases, Drikakis said.