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Origin of Time Zones

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by mcgorry
September 18, 2017

Howard Mansfield explains how the railroads invented time zones and their effect on the rest of the country. Measuring time was at one time… read more

Howard Mansfield explains how the railroads invented time zones and their effect on the rest of the country. Measuring time was at one time determined by the position of the sun in the sky. However, with the expansion of the railroad in the 19th century, the concept of time and how we kept it changed. close

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Origin of Time Zones

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Program ID:
433299-2
Category:
Interview
Format:
Interview
Location:
Concord, New Hampshire, United States
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Origin of Time Zones

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