You can transmit silence perfectly well, but how can the receiver tell the difference between a signal of absolute silence, and no signal being sent at all? Early telephony couldn't, and that was a problem. The problem that 2600Hz signals solve isn't one of transmission, but reception. Sorry, what I said is a bit awkward and misleading. Please also read the site-wide Reddiquette. Please avoid reposting TILs that have already made the front page in the past on YouTube)Īdd or tags to your posts, as necessary. Link to the appropriate start time when referencing videos (e.g. Link to the appropriate heading when referencing an article (particularly on Wikipedia) If you are interested in reading about the TILs on this list use the search box feature and enter the keywords to pull up past TILs.Īvoid mobile versions of websites (e.g. The purpose is to keep content fresh on /r/todayilearned as requested by its members. The titles have been abridged for the sake of brevity, however the context remains the same. If your TIL is found on this list, it will be removed.
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