sound underwater signal
81Ray tracing (physics) — In physics, ray tracing is a method for calculating the path of waves or particles through a system with regions of varying propagation velocity, absorption characteristics, and reflecting surfaces. Under these circumstances, wavefronts may bend …
82Echo sounding — pulses directed from the surface or from a submarine vertically down to measure the distance to the bottom by means of sound waves. HistoryAfter the disaster of the Titanic in 1912, the German physicist Alexander Behm conducted some research to… …
83Marine Boy — This article is about the anime. For the 2009 South Korean film, see Marine Boy (film). For the song by Haircut 100, see Pelican West. Marine Boy 海底少年マリン (Kaitei Shōnen Marin) Genre Adventure, science fiction …
84RMS Titanic — was an Olympic class passenger liner owned by the White Star Line and built at the Harland and Wolff shipyard in Belfast, Ireland (now Northern Ireland). On the night of 14 April 1912, during her maiden voyage, Titanic hit an iceberg, and sank… …
85USS Tennessee (BB-43) — USS Tennessee (BB 43), the lead ship of her class of battleship, was the third ship of the United States Navy named in honor of the 16th state. [ [http://www.history.navy.mil/photos/sh usn/usnsh t/bb43.htm USS Tennessee (BB 43), 1920 1959 ,… …
86Thomas the Tank Engine and Friends annuals — About the Annuals=After the Railway Series was published, many Thomas Annuals were printed and sold. They are still being made in print to this day. The Annuals have contained many activities, stories, and information about Thomas and his friends …
87Microbarom — In acoustics, microbaroms, also known as the voice of the sea ,[1][2] are a class of atmospheric infrasonic waves generated in marine storms[3][4] by a non linear interaction of ocean surface waves with the atmosphere …
88transducer — /trans dooh seuhr, dyooh , tranz /, n. a device that receives a signal in the form of one type of energy and converts it to a signal in another form: A microphone is a transducer that converts acoustic energy into electrical impulses. [1920 25; < …
89List of noise topics — This is a list of noise topics. Contents 1 Engineering and physics 2 Environmental 3 Noise reduction 4 Music …
90Miller Reese Hutchison — Born August 6, 1876(1876 08 06) Montrose, Alabama Died February 16, 1944 ( …
