Chasing Light: The Uncertainty We Can Never Catch

It started as a debate during a boring lecture in school. Me and Friends were watching down the window and talking , when one randomly asked, “Can we really measure the speed of light… like, actually measure it?” We all paused and laughed. It sounded so easy, Everyone “knows” the speed of light is 299,792,458 meters per second. But then he asked: “Yeah, but has anyone ever measured it — like how we measure the speed of a car?” The laughter faded. We stared at him. Then at each other. Turns out, that’s when you know you’re about to fall into a new physics paradox. And so this blog is born — from that conversation, from that curiosity. A journey to explore the mysterious uncertainty in measuring the true value of the speed of light. The Speed of Light: A Constant… But Is It? The speed of light is exactly 299,792,458 meters per second. We are so sure of it that since 1983, we’ve actually used the speed of light to define how long a meter is. It’s just t...