Zaman nedir? 1. bölüm

What is time? Have we ever considered this question? It's a concept we all know perfectly well, but find ourselves speechless when it comes to describing it. Time is change. Time is, in fact, a consequence of our own inadequacy. Why do we need such a concept? What tools have people used from past to present to describe this change, to measure time? For example, sundials, water clocks, hourglasses, candlesticks, mechanical clocks, and the latest technology, precision atomic clocks. How has civilization advanced? I wonder how scientists from past to present have defined time (Aristotle, Immanuel Kant, Leibnez, Goliath, Newton, Einstein). Which one was correct? Einstein's theory of special relativity, published in 1905, told us that time doesn't flow the same for everyone. The faster you are in space, the slower it moves for you. When you reach the speed of light, time stops for you. So, is it possible to reach the speed of light? Let's say we reach the speed of light, and if we surpass it, would we go back in time? What are the twins and grandfather paradoxes? Is time related to entropy? In 1915, Einstein discovered that time, in addition to being dependent on speed, also depends on gravity. Spacetime was a curved thing. Was Einstein wrong? Quantum, for example! The expansion of the universe, for example! Are the planets moving away from us? What is the Doppler effect? ​​What did Edvin Hubble prove with his space telescope? What are concepts like time dilation, time contraction, and time warp? Let's take a long journey in this video and understand how nature works... #alberteinstein #whatistime #time 00:00 Definition of time 07:42 What have we used to measure time from the past to the present? 10:50 The definition of 1 second 11:14 The relativity of time and scientists' views on time 13:40 Einstein's special theory of relativity and the twin paradox 16:47 Einstein's general theory of relativity and the source of Mercury's orbital deviation 17:32 The Hafeal-Keating experiment 18:18 What is time warping? 18:55 Time dilation and time contraction 19:08 Spacetime delineation and spacetime curvature 19:55 Solar eclipse experiment and proof of general relativity 20:27 Advocating for Newton 21:00 Einstein's errors: The Doppler effect and the expansion of the universe 22:35 Quantum theory 23:01 The insurmountable limit in the universe: the speed of light 24:55 Time travel 26:21 Paradoxes and the principle of causality 27:38 The relationship between thermodynamics and time 29:52 Closing