what is a Second? (the answer keeps changing)

Made with code, Blender and pixel art. if your reading this then you are interested in my content so might aswell subscribe! What is a second? It sounds like the simplest question there is. We went four floors down to find out, and the answer changed on every floor. Follow Blip down through a pixel-art dungeon and watch the definition of a second break and get rebuilt: from a slice of the day, to a slice of the year, to 9,192,631,770 beats of a caesium atom, to the optical clocks that may replace it. On the way: a boss fight with the spinning Earth, leap seconds that crash servers, why your head ages a little faster than your feet, and a vote that decides how we keep time. CHAPTERS 0:00 What is a second? 1:08 Floor one: the day 2:44 Floor two: the year 3:29 Floor three: the atom 4:34 Boss fight: THE TURNING 5:14 Look at that number again 6:41 The perfect clock has a second problem 7:52 There isn't one clock 8:56 Leap seconds 9:39 Then the Earth sped up 11:28 Floor four: light 13:43 Every clock is a ruler 14:50 The question left behind If you want more holes like this one, subscribe, and tell me in the comments what we should fall into next. #physics #time #science #amimation