Meghnad Saha

Home > ... > Science and Technology > Physics > Physics: Biographies > ...

Essential reading Compare
side-by-side A Dictionary of Astronomy The Columbia Encyclopedia, Sixth Edition

Meghnad Saha

Meghnad Saha , 1893-1956, Indian physicist. He was a professor at Allahabad Univ. from 1923 to 1938 and a professor and physics department head at Calcutta Univ. from 1938. His theory of high-temperature ionization of elements and its application to stellar atmospheres, expressed in the Saha equation, is fundamental to modern astrophysics; subsequent development of his ideas has led to increased knowledge of the pressure and temperature distributions of stellar atmospheres.

Create a link to this page

Copy and paste this link tag into your Web page or blog:

<a href="http://www.encyclopedia.com/topic/.aspx#1E1-Saha-Meg" title="Facts and information about Meghnad Saha">Meghnad Saha</a>

Give this article a thumbs-up on StumbleUpon

Cite this article
Pick a style below, and copy the text for your bibliography.

MLA
Chicago
APA

"Meghnad Saha." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 19 Dec. 2009 <http://www.encyclopedia.com>.

"Meghnad Saha." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. (December 19, 2009). http://www.encyclopedia.com/doc/1E1-Saha-Meg.html

"Meghnad Saha." The Columbia Encyclopedia, Sixth Edition. 2008. Retrieved December 19, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-Saha-Meg.html

Learn more about citation styles

Saha ionization equation

A Dictionary of Astronomy | 1997 | Â© A Dictionary of Astronomy 1997, originally published by Oxford University Press 1997. (Hide copyright information) Copyright

Saha ionization equation A formula that relates the fraction of ionized atoms in a star's atmosphere to the temperature of the gas and the electron density (i.e. the number of free electrons per unit volume in the atmosphere). It provides an understanding of the relative prominence of spectral lines of different atoms and ions in the spectra of stars, and enables their temperatures to be derived from their spectral type. The equation was derived by the Indian astrophysicist and nuclear physicist Meghnad Saha (1894–1956).

Create a link to this page

Copy and paste this link tag into your Web page or blog:

<a href="http://www.encyclopedia.com/topic/.aspx#1O80-Sahaionizationequation" title="Facts and information about Meghnad Saha">Meghnad Saha</a>

Cite this article
Pick a style below, and copy the text for your bibliography.

MLA
Chicago
APA

"Saha ionization equation." A Dictionary of Astronomy. 1997. Encyclopedia.com. 19 Dec. 2009 <http://www.encyclopedia.com>.

"Saha ionization equation." A Dictionary of Astronomy. 1997. Encyclopedia.com. (December 19, 2009). http://www.encyclopedia.com/doc/1O80-Sahaionizationequation.html

"Saha ionization equation." A Dictionary of Astronomy. 1997. Retrieved December 19, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-Sahaionizationequation.html

Learn more about citation styles

Free newspaper and magazine articles

	Hinditron Secures First Order in India for New Cray XD1 Supercomputer, from Saha Institute of Nuclear Physics. Business Wire; 9/30/2004
	Aeras Appoints Dr. M. M. Sharma to Board of Directors. Business Wire; 7/27/2005

Facts and information from other sites

Related articles from newspapers, magazines, and more

	Hinditron Secures First Order in India for New Cray XD1 Supercomputer, from Saha Institute of Nuclear Physics. Business Wire; 9/30/2004; 700+ words ; ...pleased to continue its relationship with Saha Institute, Kolkata and support its research...processors over the Cray XD1 interconnect. About Saha Institute of Nuclear Physics Founded by Prof. Meghnad Saha and officially inaugurated in January 1950...
	PRESIDENT KALAM ADDRESSES INDIAN ASSOCIATION FOR CULTIVATION OF SCIENCE News Wire article from: The Hindustan Times; 1/17/2006; 700+ words ; ...of Indian science such as Sir C.V. Raman and Prof Meghnad Saha. Of course you had a great founder with a vision...encouraged by IACS since the days of Sir CV Raman and Dr Meghnad Saha should continue to exist for all generations. Thinking...
	Focus on target, students advised News Wire article from: The Hindustan Times; 10/16/2006; 453 words ; ...Joshi was addressing the inaugural session of fourth Meghnad Saha lecture on 'From Big Bang to Black Holes' hosted by...Pradeep Kumar outlined the life and achievements of Dr Meghnad Saha while convenor of the lecture. The Hindustan Times...
	What Will It Take For A Resident Indian To Win A Nobel Prize? Newspaper article from: Business Today; 1/15/2006; ; 700+ words ; ...Interestingly, the five before 1950 are all individual efforts, namely, the works by Ramanujam (mathematics), Meghnad Saha (ionisation equation), S.N. Bose (particle statistics), C.V. Raman (Raman Effect) and G.N. Ramachandran...
	PM LAYS FOUNDATION STONE FOR INDIAN INSTITUTE OF SCIENCE EDUCATION AND RESEARCH IN KOLKATA News Wire article from: The Hindustan Times; 7/11/2006; 700+ words ; ...at the world level such as Sir Jagdish Chandra Bose, Prof. Satyendra Nath Bose, Dr Prafulla Chandra Ray and Prof. Meghnad Saha, Prof. P.C. Mahalanbis captured the spirit of the Bengal Renaissance and spread scientific culture in Bengal and...
	'INDIA'S VITAL INTEREST LIES IN PROVIDING BEST EDUCATION' News Wire article from: The Hindustan Times; 6/2/2006; 654 words ; ...century', he said. Shri Singh also said that the great thinkers and educationists like Dr. Radhakrishnan, Dr. Meghnad Saha and Maulana Abul Kalam Azad are household names in India and it is on the foundation laid by them that the modern education...
	PRESIDENT KALAM'S ADDRESS AT SEOUL'S YONSEI UNIVERISTY News Wire article from: The Hindustan Times; 2/7/2006; 700+ words ; ...contributions towards number theory, J.C. Bose in the area of microwaves, S.N. Bose, for Bose-Einstein statistics and Meghnad Saha for 'Thermo-Ionization Equation' and Chandrasekhar Subramaniam for his Chandrasekhar limit and black hole. Like...
	India, South Korea must ensure quality while promoting virtual education: Kalam News Wire article from: The Hindustan Times; 2/7/2006; 700+ words ; ...contributions towards number theory, JC Bose in the area of microwaves, SN Bose, for Bose-Einstein statistics and Meghnad Saha for 'Thermo-Ionization Equation' and Chandrasekhar Subramaniam for his Chandrasekhar limit and black hole," Kalam...
	For Allahabad Doordarshan, old is gold and respected too News Wire article from: The Hindustan Times; 4/13/2006; 700+ words ; ...minister and veteran journalist PD Tandon, renowned artist and art critic Kshitindra Nath Majumdar, noted scientist Meghnad Saha and well-known poetess Mahadevi Verma. Moreover, many documentaries are in final stages. Many of these documentaries...
	Text of PM's speech at Kolkata News Wire article from: The Hindustan Times; 7/11/2006; 700+ words ; ...at the world level such as Sir Jagdish Chandra Bose, Prof. Satyendra Nath Bose, Dr Prafulla Chandra Ray and Prof. Meghnad Saha, Prof. P.C. Mahalanbis captured the spirit of the Bengal Renaissance and spread scientific culture in Bengal and...