It wouldn’t travel to earth or it would just pass through us. But does the frequency of light reach infinity? Theoretically there is no such limit, but in practice we haven’t observe it. I have an analogue of that metaphor myself, consider a guitar, this time the wavelength can go to infinity, since $f_n=nv/2L$ 1. The piano metaphor, that the full spectrum of light of different wavelength is like the full notes on a piano with only one note that human can hear/see, is beautiful.The restrictions of human eyes: (1) wavelength: $380–700 \space \text$ or maybe higher, see FPS : Human eye can see how many frames per second?.(I will come back to this “linear process” later in §2.) Here’s something interesting to me in these chapters. I have read about them in several textbooks, but when these clues forming a linear process, it’s something else. The first 6 chapters are Astronomy 101 to me. This is a review of The Invisible Universe: Why There’s More to Reality than Meets the Eye by Matt Bothwell. Book Review: The Invisible Universe: Why There's More to Reality than Meets the Eye
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