Gamma waves
x-rays
x-rays
x rays
X-rays are used to penetrate solids and are commonly used in medical settings, such as doctor's offices, for diagnostic imaging. They are also used in security screening at airports to detect hidden items in luggage.
Ex-rays are and are used in doctors offices and airports! and sometimes to see how big your feet are! ;)
Ultrasound waves are used to penetrate solids like tissues in medical imaging devices in doctors' offices. Ultrasound waves are high frequency sound waves that create images of internal body structures by bouncing off tissues and producing echoes.
x-rays.
Radio waves are generally considered the least dangerous type of wave. They have low energy and are not known to cause harm to living organisms in the same way that other types of waves, like ultraviolet or gamma rays, can.
Ultrasonic units can penetrate solids, liquids, and gases, depending on the frequency used. Higher frequency ultrasonic waves penetrate shallow tissues or liquids, while lower frequency waves can penetrate deeper tissues or solids.
Sound can penetrate those mediums.
Gamma rays are gamma rays are gamma rays.
A body wave that doesn't penetrate the earth's core is a secondary wave (S-wave). These waves travel only through solids and are slower than primary waves (P-waves), which can propagate through both solids and liquids. S-waves are responsible for the up-and-down movement of particles during an earthquake.