The "time period" of Doraemon can be understood in two distinct ways: either concerning the scientific definition of a time period or referring to the chronological eras relevant to the character and its media.
Understanding "Time Period" in a Scientific Context
In physics, a time period refers to the duration required for one complete cycle or oscillation to occur. It is symbolized by the letter T and its standard unit of measurement is seconds. This concept is inversely related to frequency, which quantifies the number of occurrences of a repeating event per unit of time, typically measured in Hertz.
Given this scientific definition, Doraemon, a fictional robotic cat, does not exhibit oscillations or repeating physical phenomena that would allow for the measurement of a scientific time period. Therefore, from a physics standpoint, Doraemon does not have a measurable "time period."
The Chronological Eras of Doraemon
If "time period" refers to the chronological setting or the span of its creation and existence in media, then several significant timeframes are associated with Doraemon:
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Character Origin: Doraemon himself originates from the 22nd century, specifically being manufactured on September 3, 2112.
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Primary Story Setting: Despite Doraemon's future origin, the majority of the stories are set in the mid-to-late 20th century Japan, reflecting the contemporary era when the manga was first created and serialized. Nobita Nobi, the boy Doraemon lives with, resides in this period.
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Manga Publication: The original Doraemon manga series, created by Fujiko F. Fujio, was first serialized in various Shogakukan magazines starting in December 1969 and continued until June 1996.
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Anime Adaptations: The beloved character has been adapted into several long-running anime series:
Aspect Time Period / Era Details Character Origin 22nd Century (2112) Doraemon is a robot from the future sent back in time. Primary Story Setting Mid-20th Century (approx. 1970s Japan) Most adventures unfold in contemporary Japan during the manga's run. Manga Publication December 1969 – June 1996 The original serialization period by Fujiko F. Fujio. Anime (First Series) April 1, 1973 – September 30, 1973 Produced by Nippon TV. Anime (Second Series) April 2, 1979 – March 25, 2005 Produced by TV Asahi, widely known as the "classic" Doraemon anime. Anime (Third Series) April 15, 2005 – Present The ongoing Doraemon series by TV Asahi, featuring updated animation and voice cast.
These different chronological "time periods" define Doraemon's journey from a future robot to a timeless cultural icon, experienced across decades of manga and anime.
