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Radar uses electromagnetic waves through the air to detect objects when the wave hits them and bounces back. These waves' quality degrades greatly when it passes through a liquid or a solid and would bounce back immediately. Sending a radar signal through water would be nearly impossible as it would partially bounce back the second it hit the water itself.
Sonar is what is used to detect objects underwater, as it uses sound waves instead, which work more strongly on vibrations made by a sound signal/wave.
Radar uses electromagnetic waves through the air. These waves would degrade WAY too much traveling through the denseness of large volumes of water. This is why SOUND waves are used underwater instead, in a technique known as sonar.
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Was there been a pyramid found under water?
no there has not been a pyramid found under water
Is the north pole under water?
no, but it is on top of the water
Which planet has a moon with a possible ocean water under a crust of ice?
Jupiter's moons - Europa and Ganymede possibly have oceans of liquid water under their crust. Saturn's moon - Enceladus also has a possible ocean of water under it's crust.
Is Atlantis under water?
yes its believed to be under the island Malta in the medderterainian sea
Is the tyne tunnel built under water?
The Tyne River Tunnel is indeed built partly under water. The lowest spot in the tunnel is 85 feet below the high water mark of the river.
What is the radar for?
Radar is used to detect concentrations of water droplets in the atmosphere, which tells meteorologists where rainfall, snow and hail are occurring.
Why do submarines hide if they are detected by radar systems?
Submarines will retreat to the depths if they are detected by radar. Note that radar can only detect a submarine if they are on the surface or if they have a mast or periscope sticking up out of the water. Radar has a terrible time trying to penetrate water, so if a submarine is detected because something is sticking up out of the water, the submarine will submerge to get some depth. Radar can't detect it down there. Also, the submarine will be trying to get out of the area and become "lost" in the ocean where it cannot be detected or located.
Why can fish detect sound under water?
They have (inner) ears.
A fishing boat using sonar to locate fish is employing what?
A fishing boat using sonar to locate fish is employing reflection. The technique that uses sound propagation to detect objects under the water.
What did the military use sonar's for?
Sonars were used to detect any objects that got into the detection field of the sonar. By this, the military could detect enemy submarines etc., which they couldn't see normally because of the opacity and/or darkness of the water.
What boats use to locate objects under water?
Sonar
What is the instrument used in seeing objects at the surface of the water from a submarine under water?
Periscope
Do scientists believe that mars has water underground?
Yes, but not LIQUID water. In many cases, it's possible to detect things that are underground by radar, and by the type of return signal, figure out what kind of thing the radar pulse hit. Scientists controlling the Mars Surveyor satellite have bounced radar beams off of the north polar regions of Mars, and the return signal indicates that at least some water ice is buried a few centimeters underground.
How do thermometers and radar and sonar measure?
Sonar ( sound Navigation and Ranging) is a technique that uses sound propagation (usually underwater) to navigate communicate with or detect other vessels (it mainly measures under water distances)A radar system has a transmitter that emits magnetic waves When they come into contact with an object they are scattered in all directions. The signal is thus partly reflected back and it has a slight change of wavelength , if the target is moving. The receiver is usually in the same location as the transmitter. Although the signal returned is usually very weak, the signal can be amplified through use of electronic techniques in the receiver and in the antenna configuration. This enables a radar to detect objects at ranges where other emissions from the target object, would be too weak to detect .(thus it measures microscopic or even large movements)3.thermometer simply measures the heat(thermal)i.e,the temperature in Fahrenheit or Celsius subsequently a clinical thermometer measures the temperature of our body
Why do objects appear to be bent when partially submerged under water?
The light rays from the submerged part of the objects are bent when they cross the water-air interface.
Why do meteorologists use a radar?
RADAR stands for RAdio Detection And Ranging. It can detect anything that will reflect its radio pusles. It is used to monitor airspace around airports, locate and track satellites in space, monitor atmospheric water density for weather stations... Many very useful functions.
What did the us use before sonar?
Before sonar, the US used various acoustic detection methods, such as hydrophones and listening devices, to detect underwater objects and submarines. These methods relied on the amplification and interpretation of sound waves in water. Additionally, the US Navy also used other methods like visual observation and radar for above-water detection.
