David Alter

David Alter

Born	December 3, 1807
Birth place	Westmoreland County, Pennsylvania, USA
Died	September 18, 1881
Place of death	Freeport, Pennsylvania, USA
Nationality	American
Known for	Invention of the electric telegraph, spectroscopy

David Alter (December 3, 1807 – September 18, 1881) was an American physician, physicist, and inventor. He is best known for his work in spectroscopy and for inventing an early version of the electric telegraph.

Early Life and Education

David Alter was born in Westmoreland County, Pennsylvania. He pursued his education in medicine and graduated from the Western Reserve College in Ohio. Alter's interest in science and invention was evident from an early age, and he continued to explore various scientific fields throughout his life.

Career and Inventions

Medical Practice

Alter initially practiced medicine in Elderton, Pennsylvania. His medical practice provided him with the financial stability to pursue his scientific interests.

Spectroscopy

In 1853, David Alter made significant contributions to the field of spectroscopy. He was one of the first to observe and document the spectra of metals, noting that each element produced a unique spectral signature. This work laid the groundwork for future developments in spectroscopy, a field that would become crucial for chemical analysis and the study of atomic structure.

Electric Telegraph

David Alter is credited with inventing an early version of the electric telegraph in 1836, a year before Samuel Morse developed his more famous version. Alter's telegraph was capable of transmitting messages over a wire using electrical signals. Although his invention did not gain widespread adoption, it was an important step in the development of long-distance communication technology.

Other Inventions

Alter also invented a number of other devices, including an electric clock and a method for extracting oil from coal. His diverse interests and inventive spirit led him to explore various scientific and technological challenges of his time.

Personal Life

David Alter married Laura Rowley, and they had several children. He spent much of his life in Freeport, Pennsylvania, where he continued his scientific work and inventions until his death in 1881.

Legacy

Although not as widely recognized as some of his contemporaries, David Alter's contributions to science and technology were significant. His early work in spectroscopy and telegraphy paved the way for future innovations in these fields.

Also see

• Spectroscopy
• Electric telegraph
• Samuel Morse
• History of telecommunication