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Walter Coplen 1900 - 1968

Walter Coplen of Los Angeles, Los Angeles County, CA was born on November 23, 1900, and died at age 67 years old in April 1968.

Walter Coplen

Los Angeles, Los Angeles County, CA 90027

November 23, 1900

April 1968

Male

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Walter Coplen Walter Coplen (1900 - 1968)

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Walter Coplen's History: 1900 - 1968

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11/23

1900

Birthday

November 23, 1900

Birthdate

Unknown

Birthplace

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04/dd

1968

Death

April 1968

Death date

Unknown
Cause of death

Unknown
Death location

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Walter Coplen lived 7 years shorter than the average family member when died at the age of 67.

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Walter Coplen lived 7 years shorter than the average family member when died at the age of 67.

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Did you know?

In 1900, in the year that Walter Coplen was born, the German physicist Max Planck formulated an energy theory, postulating the existence of "quanta," which lays the groundwork for the quantum theory of modern physics. In December, he introduced a paper on the Planck postulate which stated that E=hv - the energy of a photon is proportional to its frequency times a constant. Planck won a Nobel Prize in 1918 for his work in theoretical Physics.

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In 1919, at the age of 19 years old, Walter was alive when in Norfolk Virginia, the first rotary dial telephones were introduced by the American Telephone and Telegraph Company (AT&T), making it easier to make a call without an operator.

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