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The decimal system is deeply rooted in our lives. However, if you think about it, we use 24, 60, and 360 for time and angles, not 10 or 100, and for some reason, the musical scales used in music are divided into 12 equal parts, not 10. Why is the decimal system not mainstream in these fields? What would happen if we were to bring in the concept of the decimal system? This video will explain these questions. ■Notes: The content mentioned in this video introduces the most plausible theories among several. There may be other reasons. - The correct way to call the decimal system and 10 equal parts is to call them "jisshinho" and "jittoubun", but please note that there are some parts in the video where they are read differently. - The decimal system and decimal numbers are treated as different things. (If decimal numbers are included, sexagesimal numbers will also be included) ■Table of Contents0:00 Opening0:28 Introduction2:51 Angle (degree system)7:44 Time12:04 Temperament (12-tone equal temperament)27:53 Conclusion■Recommended • Self-built PC Rating Check Ver.2024 • Turn farmland into buildings!? Maizo Country Diary #6 (Slow commentary) ■References/pages・National Astronomical Observatory of Japan Calendar Wiki Fixed and irregular time systemshttps://eco.mtk.nao.ac.jp/koyomi/wiki... ・An attempt at a global internet timehttps://kakuyomu.jp/works/11773540548... ・swatch: About Swatch Internet Timehttps://www.swatch.com/en-en/internet... ・The science of temperament and scalesNew edition: How did Do-Re-Mi... come about? (Bluebacks): By Ogata Atsushi・Wikipedia... Decimal time, 19 equal temperament ・Photo AC ・Example of microtones: Kirby Super Star - Underground Trees Area BGM • [SFC] Kirby Super Star - Underground Trees Area Chitei... • (Perfect reproduction of microtones!) Kirby Super Star: Underground Trees Area Ki... ■AfterwordThis channel mainly produces PC-related and Minecraft commentary videos, but sometimes we upload videos related to science and mathematics other than PC, such as huge numbers. Since it is not a business purpose but a personal hobby, updates are quite irregular and we may upload videos of other genres to change the mood, so please understand. Of the contents covered this time, "temperament" in particular is a field that I have been interested in for a long time, and I have wanted to cover it someday. However, the content is difficult to understand when actually explaining it, and the content is far from 30 minutes, so (I'm sorry) there are some parts where the explanation is rough and the explanation of theory is omitted. I would be grateful if you would become interested in temperament and other things after watching this video. Thank you for your continued support. #Science #Unit system #Music #Temperament #Slowly