Includes: 1: A Martin drawing showing the complete vehicle sans payload section, with inboard view of the first and second stages and transstage. 18067 x 4577 pixels. 2: Martin layout drawing of the core vehicle with numerous cross-sections. 22962 x 4332 pixels 3: United Aircraft drawing 4A0020, Rocket Motor - Flight Configuration.
NOAA scientists primarily use sonar to develop nautical charts, locate underwater hazards to navigation, search for and map objects on the sea floor such as shipwrecks, and map the sea floor itself. There are two types of sonarâactive and passive.
Scientists use a form of visible radar called lidar (light detection and ranging) to measure air pollution with lasers. Archeologists and geologists point radar down into the ground to study the composition of the Earth and find buried deposits of historical interest. One place radar isn't used is on board submarines. Electromagnetic waves don't travel readily through dense seawater (that's why it's dark in the deep ocean). Instead, submarines use a very similar system called SONAR (Sound Navigation And Ranging), which uses sound to see objects instead of radio waves.