WiFi的诞生源于寻找黑洞的实验
DiebugWi-Fi exists because scientists went looking for black holes and found something else
来源: makeuseof | 原文链接: https://www.makeuseof.com/wi-fi-scientists-black-holes-discovery/
Wi-Fi exists because scientists went looking for black holes and found something else Credit: NASA.gov By Jonathon Jachura Published Aug 19, 2026, 2:30 PM EDT Jonathon Jachura is a mechanical engineer with over 12 years of HVAC industry experience who specializes in translating complex home systems into practical advice for everyday homeowners. His background spans technical sales and product management for major manufacturers, combined with hands-on experience as a two-time homeowner who has tackled everything from system installations to troubleshooting repairs. Jon focuses on helping readers make confident decisions about their homes through clear, actionable guidance that saves both time and money. Sign in to your MakeUseOf account Add Us Add on Google Preferred Source Google News Summary Generate a summary of this story Like Like follow Follow followed Followed Thread Log in Here is a fact-based summary of the story contents: Try something different: Show me the facts Explain it like I’m 5 Give me a lighthearted recap The math that keeps your phone connected two rooms away from the router was built to find something that turned out not to be there. In the 1970s, a group of radio astronomers went hunting for the radio signature of exploding black holes the size of a proton. They came up empty. What they did produce along the way was a signal-processing technique for pulling a clean signal out of a smeared, noisy mess, and that technique eventually became a patented piece of the Wi-Fi standard your router runs today. I have four access points in my ceilings and 1,200Mbps coming into the house. The chain from that failed hunt to the hardware overhead is shorter than you’d expect, and it explains a lot about how home networks behave. ## A 1974 prediction sent radio astronomers hunting ### Hawking said tiny black holes should leave a radio fingerprint Credit: University of Cambridge (cam.ac.uk) Stephen Hawking published work in 1974 arguing that black holes are not permanently sealed. Very small ones, he calculated, would slowly evaporate and finish their lives in a burst of energy that included radio waves. A black hole the size of a proton carrying the mass of a mountain would effectively announce its own death across the radio spectrum. John O’Sullivan, an Australian engineer working on radio telescopes in the Netherlands, decided to go looking for one. Sensitivity was not the obstacle. Clarity was. A radio pulse crossing thousands of light-years of gas and dust does not arrive as a sharp spike. Different frequencies inside the same pulse travel at slightly different speeds, so the signal stretches into a low, wide bump and sinks below the background noise of the universe. O’Sullivan and his collaborators built mathematical tools around fast Fourier transforms to reverse that stretching and rebuild the original spike. The tools worked. The black holes never turned up. Related I made my Wi-Fi channel narrower, and my whole house got faster The
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