Time Spent Talking, Not Just Physical Distance, Plays Role In Covid-19 Spread Researchers Say

Stay six feet apart — that’s the rule of thumb when it comes to social distancing. However, a new study suggests we need to take speech into account in addition to physical distancing when creating Covid-19 transmission mitigation strategies. By assessing the physics of saliva droplet formation and subsequent spray while a person speaks, researchers have shown the words we say play a role in how many droplets we spread — and how far they go.  

The paper, published in Physical Review Fluids, explores the mechanics behind transmission of droplets through speech. Manouk Abkarian of the University of Montpellier, France, and Howard Stone of Princeton University used high-speed videos to study how a talking person forms saliva droplets.

“Since there are many excellent studies on the size of droplets formed in some of these activities, we decided to study the airflows that would

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Distance Learning Summit — Campus Technology

Campus Technology Distance Learning Summit

As colleges and universities navigate the ever-shifting challenges of higher education’s “new normal,” they are also looking ahead: How can the lessons learned from the pandemic redefine teaching and learning moving forward? And how can the technology decisions made today impact the future? In thoughtful hour-long editorial sessions, education and IT leaders will share their ideas, experiences and outlook, and engage attendees with a live Q&A.

9:00 – 10:00AM PT

Session 1: How the Pandemic Gave IT as Seat at the Table

For information technology leaders in higher education, one silver lining of the pandemic has been the opportunity it has given IT to shine at a strategic level. In this panel discussion, CIOs will share how they have been able to get involved in pandemic response planning, fast-track IT projects, provide critical solutions to campus challenges, elevate the position of IT within institutional leadership,
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Astronomers Now Know the Distance To A Powerful Magnetar That Went Dark In 2008

The universe is so vast that even the closest stars are light-years away. They are so distant that they were long thought to be fixed points in the velvet night. Since we can’t yet travel to the stars, measuring their distance is a challenge. Astronomers use a hierarchy of techniques known as the cosmic distance ladder, where the distance of nearby stars are used to determine the distance of farther objects such as galaxies and quasars. All of this is based upon the most basic method known as parallax.

Parallax relies upon the fact that the Earth orbits the Sun. Over six months, the position of the Earth shifts by 300 million kilometers. By observing a star’s location against more distant objects, we see that the star appears to shift as seen from different positions. This parallax shift is such that the

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