Imagine a layer of the ocean so teeming with life that, when first discovered, scientists mistook it for the seafloor. This ...

Let's say that a vessel did use active sonar around living things. What would happen? Sound travels in waves. You've likely been to a concert where you could feel the bass coming from the stage.

That fact makes cloaks tricky to design: The waves of sound or light must come back to the detection device -- be it sonar microphones, human eyeballs or radar -- with the same shape and frequency ...

Sound can actually travel thousands of miles in water without losing its signal. Sonar works by sending out sound waves that will bounce off objects, which creates an echo.

When the sonar wave smacks the bubbly coating, the energy of the wave is transformed into the vibration of the tiny bubbles, which which soaks up and disperses sound.

Soundwaves from underwater military sonar are far more distressing for whales than was previously thought and drives some terrified creatures to their death onshore, a new study has show.

Types of Sonar: Active vs. Passive. There are two types of sonar: active and passive. Active sonar involves a warship broadcasting directed sound waves underwater: If the sound waves strike an ...

Researchers at Stanford University have developed a new type of sonar to overcome the previously insurmountable problem of seeing underwater from the air. Sound does not travel easily between air ...

When hit by sound waves, ... (2 millimeters) bubbles could absorb more than 99 percent of the energy from sonar, cutting down reflected sound waves by more than 10,000-fold, ...

Sonar Display Screen This Sonar Display is comprised of a "waterfall," many sound waves arranged vertically. Scrolling upwards, these waves represent different sound patterns over time.

STRIKE a metallic object, and you’ll hear a sharp clang. Knock on wood, and you get a dull thunk. It’s the basic principle behind sonar – sound waves reflecting off different objects.