What sonar device let Morse code messages be sent underwater from a submarine in 1915?

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1What sonar device let Morse code messages be sent underwater from a submarine in 1915?
Step 1 : Introduction to the question “What sonar device let Morse code messages be sent underwater from a submarine in 1915?…Hint :Reginald Step 2 : Answer to the question “What sonar device let Morse code messages be sent underwater from a submarine in 1915? Fessenden Oscillator | You may try other alternate answer: The Fessenden: Please let us know as comment, if the answer is not correct!
https://www.try3steps.com/2020/04/answer-what-sonar-device-let-morse-code.html

2What sonar device let Morse code messages be sent underwater from a submarine in 1915?
What sonar device let Morse code messages be sent underwater from a submarine in 1915? Fessenden oscillator. Reginald Aubrey Fessenden (October 6, 1866 – July 22, 1932) was a Canadian-born inventor, who did a majority of his work in the United States and also claimed U.S. citizenship through his American-born father.[1]
https://what.youwacom.ma/2017/02/21/what-sonar-device-let-morse-code-messages-be-sent-underwater-from-a-submarine-in-1915-2017/

3What sonar device let Morse code messages be sent underwater from a submarine in 1915?
A Fessenden oscillator is an electro-acoustic transducer invented by Reginald Fessenden, with development starting in 1912 at the Submarine Signal Company of Boston. It was the first successful acoustical echo ranging device. Similar in operating principle to a dynamic voice coil loudspeaker, it was an early kind of transducer, capable of creating underwater sounds and of picking up their echoes.
https://en.wikipedia.org/wiki/Fessenden_oscillator

4Sonar

Sonar (sound navigation ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels. Two types of technology share the name “sonar”: passive sonar is essentially listening for the sound made by vessels; active sonar is emitting pulses of sounds …
https://en.wikipedia.org/wiki/Sonars

5What sonar device let Morse code messages be sent underwater from a submarine in 1915?
What sonar device let Morse code messages be sent underwater from a submarine in 1915? Answer: Fessenden oscillator. Look up the answer using sonar device morse code submarine 1915. Posted by radzero at 2/14/2016 02:47:00 AM. Email This BlogThis!
https://365google.blogspot.com/2016/02/14-feb-2016-day-61.html

6What sonar device let Morse code messages be sent underwater from a submarine in 1915?
In 1899, while embarking on a familiar route to Boston, the crew of the schooner Edward Rich became disoriented in heavy fog. The ship, laden with paving blocks, crashed into the rocks of a breakwater, and its smashed oaken hull quickly filled with water. The crew, still within view of shore, left the ruined ship to the waves. The wreck is significant because it was ordinary.
https://www.sciencehistory.org/distillations/reginald-fessenden-and-the-invention-of-sonar

7What sonar device let Morse code messages be sent underwater from a submarine in 1915?
What sonar device let Morse code messages be sent underwater from a submarine in 1915? – 2017. by Alex on February 21, 2017 …
https://what.youwacom.ma/category/agoogleaday/page/10/

8What sonar device let Morse code messages be sent underwater from a submarine in 1915?
tested a device used in the transmission of underwater morse code messages as an echo sounder. The sound was generated by `a reciprocating induction motor moving 540 times per second attached to a large steel diaphragm. It could detect an iceberg up to two miles
https://www.cnrs-scrn.org/northern_mariner/vol12/tnm_12_1_39-52.pdf

9What sonar device let Morse code messages be sent underwater from a submarine in 1915?
Demonstrating listening device, very similar to a telephone, used on board ships with submarine signaling apparatus. In: “Submarine Signaling,” Scientific American Supplement, No. 2071, pp. 168-170, Sept. 11, 1915. Image courtesy of NOAA Photo Library. Toward the end of the 1800’s, increasing ship traffic raised concerns about
https://dosits.org/people-and-sound/history-of-underwater-acoustics/the-first-practical-uses-of-underwater-acoustics-the-early-1900s/

10What sonar device let Morse code messages be sent underwater from a submarine in 1915?
sonar 1. SONAR Presented by: Mike Puato & Neil Corpuz 2. Abstract Sonar is a modern technology which helps us to track submarines, fish, ship wrecks, map the seabed and for other navigational purposes.The four main factors that affect the performance of a sonar system are a high power transmitter, an efficient transducer, a sensitive receiver and an acoustic communication system.Although the …
https://www.slideshare.net/jhcid/sonar-79273192

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1History of underwater diving
The history of underwater diving starts with freediving as a widespread means of hunting and gathering, both for food and other valuable resources such…
https://en.wikipedia.org/wiki/History of underwater diving