Seeing the Invisible: How a 350-year-old photography technique is helping to fight COVID

Various infectious agents like Coronavirus are known to be transmitted via respiratory aerosols produced by infected patients. Such aerosols may be produced during normal activities by breathing, talking, coughing and sneezing. To fight the COVID pandemic and to stop the transmission, knowledge of human respiration is very much necessary. Moreover, how devices like face-masks can control the travel of respiratory clouds? These information are also necessary to chalk out plans to restrict the pandemic.The schlieren photography technique,mostly applied in engineering and physics, can be effectively used here to visualize airflows around human subjects in different conditions, non-intrusively. Scientists are currently using schlieren Photography to understand COVID better. But this cutting edge technology was discovered almost 350 years ago.

It all started from IGNORANCE!

In 1989, Professor Charles Rosenberg published a seminal paper in American Academy of Arts & Science journal—What is an Epidemic? AIDS in Historical Perspective. Prof. Rosenberg mentioned in the paper that epidemics and pandemics could be extraordinary sampling devices for Social scientists and Historians. Structural analysis of such events can reveal some fundamental behaviors of... Continue Reading →

Be Aware of Droplets and Bubbles!

Covid-19 appears to spread mostly through respiratory droplets. But what is a droplet and how can droplets spread diseases? Here is a short graphic essay to finding out the answers.  Pathogenic respiratory droplets mostly created by spitting, sneezing and coughing in public. But what happens when someone spit? Here is the answer through visuals. All... Continue Reading →

A round of shots for everybody!-an illustrated essay (collaboration with ClubSciWri)

This essay in comics has been published in Club Sci Wri. The main article is written by Ananya Sen, edited by Pauravi Sindhe and Roopsha Sengupta.  The illustrator is Arghya Manna (Drawing History of Science). One can find the main post here. Before the discovery of the vaccine and when the actual scientific reason behind the... Continue Reading →

Stories of Indian Women in Science (a collaborative project between Sci-Illustrate and Drawing History of Science) RAJESHWARI CHATERJEE

  Rajeshwari Chatterjee (1922 – 2010). Known for her significant contributions to the field of #microwave & antennae engineering . Rajeshwari was born to an upper class Indian family which included her social activist grandmother, who started an accelerated school to promote women’s education. She attended this school, & encouraged by her grandmother, pursued higher education, completing her... Continue Reading →

The Emergence of Life and Form! an illustrated essay (collaboration with ClubSciWri)

This essay in comics is actually published in Club Sci Wri. The main article is written by Shubhendu Sen Roy, edited by Dolonchapa Chakraborty.  The illustrator is Arghya Manna (Drawing History of Science). One can find the main post here. Here is the excerpt from the main publication in Club Sci Wri page Preformationism. This image is called ‘origin of... Continue Reading →

Waging a war on microbes-an essay in comics (collaboration with Club Sci Wri)

  This essay in comics is actually published in Club Sci Wri. The main article is written by Ananya Sen, edited by Pourvi Shinde and Roopsha Sengupta. The illustrator is Arghya Manna (Drawing History of Science). One can find the main post here. Here is the excerpt from the main publication in Club Sci Wri page The antagonism between... Continue Reading →

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