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The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

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Ole Romer: A Short Life Story of a Danish Astronomer.

N8725046

Publication Date	1986
Personal Author	Ziggelaar, A.
Page Count	8
Abstract	Ole Romer (1644-1710) was the first to prove that light propagates at finite speed. He constructed planetariums, a micrometer, a grid telescope, a double view telescope, and thermometers. With his transit circle he measured very exact stellar positions. He was also prefect of police in Copenhagen.
Keywords	Astronomy Biography Scientists Astronomical telescopes Light (Visible radiation) Light speed Micrometers Thermometers Velocity measurement Romer Ole
Source Agency	NASA Foreign Exchange Program
NTIS Subject Category	54B - Astronomy & Celestial Mechanics
Corporate Authors	Royal Danish School of Educational Studies, Copenhagen. Inst. of Physics.; National Aeronautics and Space Administration, Washington, DC.
Supplemental Notes	In ESA Proceedings of the Girep Conference, 1986. Cosmos: An Educational Challenge, p121-128.
Document Type	Analytic Daughter
NTIS Issue Number	198720

Ole Romer: A Short Life Story of a Danish Astronomer.

Ole Romer: A Short Life Story of a Danish Astronomer.
N8725046

Publication Date	1986
Personal Author	Ziggelaar, A.
Page Count	8
Abstract	Ole Romer (1644-1710) was the first to prove that light propagates at finite speed. He constructed planetariums, a micrometer, a grid telescope, a double view telescope, and thermometers. With his transit circle he measured very exact stellar positions. He was also prefect of police in Copenhagen.
Keywords	Astronomy Biography Scientists Astronomical telescopes Light (Visible radiation) Light speed Micrometers Thermometers Velocity measurement Romer Ole
Source Agency	NASA Foreign Exchange Program
NTIS Subject Category	54B - Astronomy & Celestial Mechanics
Corporate Authors	Royal Danish School of Educational Studies, Copenhagen. Inst. of Physics.; National Aeronautics and Space Administration, Washington, DC.
Supplemental Notes	In ESA Proceedings of the Girep Conference, 1986. Cosmos: An Educational Challenge, p121-128.
Document Type	Analytic Daughter
NTIS Issue Number	198720