1. Radar and Sonar! Eric Gill Jessica Webb Lee Jin Tai Ryanne George Sydney Aiello

2. Sonar Uses of Sonar during World War 2: Uses of Sonar during World War 2: - Submarine - Mines A sonar device will send out sub-surfaces sound waves and listen for returning echoes. A sonar device will send out sub-surfaces sound waves and listen for returning echoes. Sonar is a system that uses transmitted and reflected underwater sound waves to detect and locate submerged objects or measure distances underwater.

3. Sonar Continued Sonar = Sound Navigation And Ranging Sonar = Sound Navigation And Ranging Lewis Nixon invented the first SONAR type device to help in detecting icebergs in 1906. Lewis Nixon invented the first SONAR type device to help in detecting icebergs in 1906. Paul Langevin took his idea and applied it to detecting submarines, he called it echo-location (like a bat). Paul Langevin took his idea and applied it to detecting submarines, he called it echo-location (like a bat).

4. Main Use Sonar in WWII allowed trade to be re- opened Sonar in WWII allowed trade to be re- opened It was put on convoy ships to locate (German) submarines It was put on convoy ships to locate (German) submarines This allowed convoys to locate incoming attacks on ships allowing them to prepare for the attack This allowed convoys to locate incoming attacks on ships allowing them to prepare for the attack

5. Sonar Usage Today Today, Sonar is used mainly for under water searches. Today, Sonar is used mainly for under water searches. Used to find small objects Used to find small objects Sonar is used in the Medical field Sonar is used in the Medical field Sonography is used to see within the human body Sonography is used to see within the human body

6. Radar A system for detecting the presence, direction, distance, and speed of aircrafts, ships, and other objects by sending out pulses of high-frequency electromagnetic waves that are reflected off the object back to the source. A system for detecting the presence, direction, distance, and speed of aircrafts, ships, and other objects by sending out pulses of high-frequency electromagnetic waves that are reflected off the object back to the source.

7. Radar: Radio Detection and Ranging.

8. Who and when Radar was Invented As early as 1866, Heinrich Hertz showed that radio waves could be reflected from solid objects As early as 1866, Heinrich Hertz showed that radio waves could be reflected from solid objects

9. Usage in WW2 Radar was used to locate incoming enemy bomb raids Radar was used to locate incoming enemy bomb raids Radar was also used to map the ground Radar was also used to map the ground

10. Radar Usage Today Used as Speedometers for Police officers to tell how fast someone is going. Used as Speedometers for Police officers to tell how fast someone is going. Used in the Navy, for tracking enemies, allies, missiles, and other various objects. Used in the Navy, for tracking enemies, allies, missiles, and other various objects.