Doppler was born in Salzburg (today Austria) on November 29th,1803. Doppler was the second son born to Johann Evangelist Doppler and Theresia Seeleuthner (Doppler). Doppler's father, Johann Doppler, was a skilled third-generation stone mason in Salzburg. Doppler was inclined to pursue his father's craft but was unfit for the work of stone mason due to his weak health. Doppler started elementary education at the age of 13 in 1816, and after completion, he moved on to high school at a school in Linz. In 1822, by the recommendation of mathematician Sion Stampfer, Doppler took a break from high school to take classes at the Polytechnic Institute in Vienna where he studied Math and physics. Doppler returned to Salzburg at 21 to finish his secondary education. After completing high school, Doppler studied philosophy in Salzburg and mathematics and physics at the University of Vienna and Imperial–Royal Polytechnic Institute (now TU Wien). In 1829, Doppler was chosen for an assistant position to Professor Adam von Burg at the Polytechnic Institute of Vienna, where he continued his studies. In 1835 Doppler decided to immigrate to the United States to pursue a position in academia. Before departing for the United States, Doppler was offered a professorship of mathematics in Prague teaching position at a state operated high school in Prague, which convinced him to stay in Europe. Shortly after, in 1837 Doppler was appointed as an associate professor of math and geometry at the Prague Polytechnic (now Czech Technical University in Prague). Doppler received a full professorship appointment at the Prague Polytechnic Institute in 1841.

Doppler married Mathilde Sturm in 1836 while working as a high school teacher in Prague. Doppler and Mathilde had five children together. Their first child was Mathilde Doppler who was born on January 22nd, 1837. Doppler's second child, Ludwig Doppler was born on April 8th, 1838. Two years later, in 1840 Adolf Doppler was born. Doppler's fourth child, Bertha Doppler was born on July 4th, 1843.

In 1945 H. D. Buys Ballot, conducted an experiment to validate Doppler's previously postulated theory. ^[1] For this experiment, Ballot filled a train car with musicians and moved the train back and forth passed the train station. The observed change in the frequency of the sound validated Doppler's equations. In 1946 Doppler published a revised version of his first paper including the experimental validation of his equations by Ballot. ^[2] (More research is needed on the details of this experiment).

Doppler's family was masons (stone) and was allowed to pursue another career due to poor health. -Significant?

Include a section on the development of the Doppler Effect - First experiment included a group of trumpeter moving back and forth on a train.

Could include a passage about how Armand Fizeau found an application in astronomy for the Doppler effect, this was confirmed by William Huggins.

Doppler gave two papers on his principal one in 1842 and a revised one in 1846

While in Vienna Doppler had five children, three sons and two daughters. - Need more info

Article needs to be sectioned off to be more organized

Doppler's middle name comes from his great great grandfather Andreas Doppler

• Peer review confirmed the need for article restructuring.
• Ensure clarity of fact vs opinion of Doppler's beliefs on his theory
• Add info about experiments and other contributions that molded the Doppler effect.
• Add more about Doppler's development of his effect.
• Edit the draft to make it flow with the surrounding material
• Develop the personal info on Doppler's life, wife, children, etc.
• Fold the name debate into another section or consider rewriting it to be more relevant in another section. (May not be noteworthy)