Why is "Coherer" trending?
Latest news, Wikipedia summary, and trend analysis.
Trend Analysis
- Ranking position: #
- Date: 2026-04-30 19:51:54
This topic has appeared in the trending rankings 1 time(s) in the past year. While it does not trend frequently, its appearance suggests a renewed or concentrated surge of public interest.
Based on Wikipedia pageviews and search interest, this topic gained significant attention on the selected date.
Trend Insight
This topic is not currently in the ranking.
Wikipedia Overview
The coherer was a primitive form of radio signal detector used in the first radio receivers during the wireless telegraphy era at the beginning of the 20th century. Its use in radio was based on the 1890 findings of French physicist Édouard Branly and adapted by other physicists and inventors over the next ten years. The device consists of a tube or capsule containing two electrodes spaced a small distance apart with loose metal filings in the space between. When a radio frequency signal is applied to the device, the metal particles would cling together or "cohere", reducing the initial high resistance of the device, thereby allowing a much greater direct current to flow through it. In a receiver, the current would activate a bell, or a Morse paper tape recorder to make a record of the received signal. The metal filings in the coherer remained conductive after the signal (pulse) ended so that the coherer had to be "decohered" by tapping it with a clapper actuated by an electromagnet, each time a signal was received, thereby restoring the coherer to its original state. Coherers remained in widespread use until about 1907, when they were replaced by more sensitive electrolytic and crystal detectors.
Related Topics
Trending Topic Today
Search Interest Perspective
-
Cohering particles via weak electromagnetic waves for highly conductive polymer composites - Nature
-
The First Radio Sets: A Spark Gap And A Coherer - Hackaday
-
Who Invented Radio: Guglielmo Marconi or Aleksandr Popov? - IEEE Spectrum
-
Popov makes early radio transmission, March 24, 1896 - EDN - Voice of the Engineer
-
Spark Gap And Coherer Meet Beagle Bone - Hackaday
-
The wireless dispute - Frontline Magazine
-
The wireless telegraph - PressReader
-
All You Need to Know About Jagadish Chandra Bose - NewsGram
-
Mysterious phenomenon where 'PC monitor turns off when lighter is lit' - GIGAZINE
-
A chronology of events - Frontline Magazine
-
7 Surprising Things India Has Given The World - BBC
-
New Part Day: Memristors - Hackaday
Why This Topic Is Trending
This topic has recently gained attention due to increased public interest. Search activity and Wikipedia pageviews suggest growing global engagement.
Search Interest & Related Topics
Search interest data over the past 12 months indicates that this topic periodically attracts global attention. Sudden spikes often correlate with major news events, public statements, or geopolitical developments.