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Google honours astrophysicist Chandrasekhar with doodle (Lead)
Mumbai, Oct 19 (IANS) Google on Thursday dedicated a special Doodle to mark the 107th birth anniversary of India-born US scientist Subrahmanyan Chandrasekhar who became the first astrophysicist to win the Nobel Prize for his treatise on the evolution of stars along with Willaim A. Fowler in 1983.
The animated Goodle (Google + Doodle) set against a dark starry backdrop shows a weighing scale in which a dwarf star on one side is trying to overcome the limit of 1.44 on the other – central to what was known as the “Chandrasekhar Limit”.
As a young student, Chandrasekhar authored his first scientific paper, “Thermodynamics of Compton Scattering with reference to the Interior of Stars”.
Later, inspired by Fowler’s works on the stability of White Dwarfs, he studied the final stages of stellar evolution and the fate of a star after its nuclear fuel is exhausted.
He explained that after the star is bereft of its nuclear fuels, an inward gravitational collapse occurs which is normally stopped by the outward pressure exerted by the star’s highly-compressed and ionized gases.
At this stage, the star converts into an extremely dense white dwarf with a peculiarity whereby the greater its mass, the smaller its radius.
This situation excludes massive stars from turning into white dwarfs and Chandrasekhar showed maximum mass of a stable white dwarf star.
His theory, known as “Chandrasekhar Limit”, said the mass of a white dwarf could not exceed 1.44 times that of the sun and his calculations threw new light on Supernovas, Neutron stars and Black Holes.
Born on October 19, 1910 in a Tamil family of Lahore in today’s Pakistan, Chandrasekhar was the nephew of another Indian scientific stalwart and 1920 Nobel laureate, Sir Chandrasekhara Venkata Raman, who is renowned for his work in the area of scattering of light called “Raman Effect”.
Chandrasekhar also contributed to the study of the theory of colliding gravitational waves. Later NASA honoured him by naming its top X-ray observatory as the “Chandra X-ray Observatory”.
Penning his first scientific paper at the age of 20, on the theory of evolution of stars, he joined the University of Chicago as a Deputy Professor at the age of 26, and worked there throughout his career till retirement in 1980.
He migrated to the US in 1937. In 1944, he was elected to the Royal Society of London, at age 34. After marriage with Lalitha Doraiswamy in 1936, the couple became US citizens.
Continuing as a researcher after superannuation, in 1983 Chandrasekhar wrote his renowned mathematical theory on Black Holes which were first discovered in 1972.
After an illustrious scientific career, Chandrasekhar passed away in Chicago following a heart attack on August 21, 1995. His wife expired in 2013 at the age of 102.
–IANS
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Lucknow: Vishal Singh, a renowned social worker from Lucknow, also known as Foodman, has once again made India proud. He was honored by the Happy Hands Gloves Cooperative Limited Company in Korathai, Thailand, for his work with the Hunger Free World Mission.
The Hunger Free World Mission’s meeting was held in Korathai, Thailand, under Vishal Singh’s leadership. Representatives from several countries, including Mr. Raja Dwivedi (Managing Director of Happy Hands Gloves Limited), Thailand Coordinator Mr. Raja Mishra, and member Mr. Varun Singh, attended the event.
Under Vishal Singh’s leadership, the attendees took a pledge to work together toward creating a hunger-free world.
Speaking on the occasion, Vishal Singh explained that the main goal of the Hunger Free World Mission is social participation. He said the mission is not just about feeding people but also about meeting other basic needs of those who are struggling. The mission focuses on helping families of terminally ill patients in hospitals by providing food and shelter. It also works to fulfill essential needs like education, jobs, and care for the elderly.
For the last 16 years, the Vijay Sri Foundation has been providing free services, benefiting thousands of people. Vishal Singh highlighted that the mission aims to gain global recognition like other organizations such as WHO, WWF, and Red Cross, which work for social causes.
During this meeting, Vishal Singh was appointed as the Chairman of the Hunger Free World Mission by representatives from various countries. They also discussed holding regular meetings in different countries to push the mission forward.
Business tycoon Dr. Abhishek Verma has also supported this humanitarian mission, vowing to promote the idea of “Seva Parmo Dharma” (Service is the highest duty) worldwide. Vishal Singh praised him, stating that people like Dr .Abhishek Verma inspire others to work for the betterment of society.
Recently, Romania’s Ambassador, Mr . Daniela Sezonov Ţane, invited Vishal Singh to the Romanian Embassy in Delhi, where they discussed the mission in detail. Impressed by his humanitarian work, she honored Vishal Singh and invited him to Romania to take the mission forward .
Food man Vishal Singh has been serving the people of India for the past 16 years. Through the Vijay Sri Foundation, he provides free meals to cancer patients & their families ,shelter, and education for women & children along with running free old-age homes in Lucknow.
In addition to his humanitarian work, Vishal Singh also addresses issues like crime and corruption through his role as Chairman of Seva Path Media and Managing Director of Vijay Sri Foundation.
During the COVID-19 pandemic, Vishal Singh and his team worked tirelessly to provide food and help to the needy, including starving children, elderly citizens, and pregnant women. Despite contracting the virus himself, he continued to assist others after his recovery. He even created a life-saving oxygen regulator using household items, which was praised by doctors both in India and abroad.
In his address at the meeting, Vishal Singh spoke about his mission to create a hunger-free world. He pointed out that India’s large population, along with issues like unemployment and poverty, has caused the country to fall on the Hunger Index. He urged people to contribute just one handful of grains daily to help create a hunger-free world.
He concluded by saying that through social participation, we can empower the people around us, meet their basic needs, and work together to build a stronger, more prosperous, and developed society.
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