Cosmos, Mysuro from the Indian Astrophysical Institute, organized practical experiments and demonstrations, in Vignan Bhavan in Manasagangotri to mark Zero Shadow Day on Tuesday. | Photo Credit: Ma Sriram
The cosmological educational and research center (Cosmos), Mysur, the Indian Astrophysical Institute on Tuesday watched “Zero Shadow Day” in Vignan Bhavan, Manasagangotri here. Amoghavarsha N., project collaborator Cosmos, IIA, presented a lecture on science for a day of zero shadow.
Later, the participants were shown practical experiments and demonstrations by the SCOPE IIA team, led by Vikranth Pulamathi. Participants were asked to make a shadow length (Shanku Yantra) to alleviate changes in the shadow every five minutes from 11.45 to 1.00 to 1.00 hours. The phenomenon of zero shadow was observed in 12.22 pm, which, according to Cosmos, showed a hollow cylinder on the glass plate along with Gnomons.
Yashaswini pcs and Renjithmon AA of IIA showed sunspots to participants. The event ended with participants who calculated the sun declination, found the right north and recorded the phenomena of zero shadow, followed by the question and response session.
Zero Shadow Day (ZSD) occurs when the sun is directly above the head (ie on zenite). At the moment, any object held vertically will not throw any shadow on the ground, because the sun’s rays fall directly on it, rather than at an angle. On other days, the sun is not completely overhead at noon, explained the press release from Cosmos.
“Only places located between the tropic of cancer and the Tropic of Capricorn will experience a ZSD that occurs twice a year, which corresponds to northern and southern movement. Because the Earth is in favor of eight about 23.5 degrees because it spins around the sun to move only for placement only for place. He is experiencing at different hours.
Published – April 22 2025 20:58
