Flashes of light.....
Every time i look at (not into!) a fibre optic, I cannot but wonder at all those pulses/flashes of light.
Not 1,000,0000 pulses per second, not 1000,000,000 pulses, but 40,000,000,000 or even 100,000,000,000 pulses per second. And every single one one of those pulses counts. It means something to someone. Something completely and utterly different than the previous or subsequent pulse. They have all been assembled in a precise order, and at the far end of the glass strand, all get dis-assembled and added into new streams of hundreds of thousands of millions of pulses per second all precisely ordered and going in multiple different directions. And in an instant, that happens multiple times, and those flashes get propagated around the planet and end up exactly where they were intended to be,
And then the pulses get precisely disassembled from that fibre, reconstructed into a binary sequence, which in turns gets reconstructed into words, or a picture, a song or a video or details of a medical procedure or drug that saves someones life.......
It's just amazing. Gobsmacking. Imagine trying to explain how it works it to your grandmother, or great-great grandmother.
And humanity has achieved this in just 60 years. Unbelievable. Thank you to the visionaries who thought it out and made it possible. Humanity owes you more than you will ever know. And i and fellow commentards owe you our entire careers.
And everyone else takes it for granted, whinges when it doesn't work, and owes you Facebook. Oh well.