For the same reason anything else changes velocity in a different medium, I would say. A change of electromagnetic impedance in this case
The bending of waves due to a change in speed is called refraction. This occurs when waves pass through different mediums with varying densities, causing the wave to change direction.
When P waves pass from the lower mantle into the outer core, their velocity abruptly decreases due to the change in the physical properties of the materials they are traveling through.
Surface waves occur at the boundary between two different mediums, such as air and water, or air and land. They travel along the interface, transferring energy in the form of ripples or undulations on the surface. Examples of surface waves include ocean waves, seismic waves, and electromagnetic waves.
Surface waves are formed when waves reach the Earth's surface. Surface waves travel along the boundary between two different mediums, such as air and land or water and land, causing the ground to move in a rolling or swaying motion. These waves are responsible for the most damage during earthquakes.
Seismic waves can dramatically change in velocity and direction when they encounter boundaries between different types of rock or geological formations. These changes, known as refraction and reflection, occur at interfaces with contrasting physical properties, leading to the bending or bouncing of seismic waves. The behavior of seismic waves at these boundaries provides valuable information about the Earth's interior structure.
When waves travel through different mediums, it is called refraction. Refraction occurs when the speed of the wave changes as it passes from one medium to another, causing the wave to bend. This bending is due to the change in the wave's velocity as it encounters a new medium with a different density.
When waves refract, they change direction as they pass from one medium to another with a different density or speed. This change in direction is due to the change in wave speed, causing the waves to bend either towards or away from the normal line. Refraction occurs because of the change in wave velocity in different mediums.
Refraction affects the propagation of sound waves in different mediums by causing the waves to change direction and speed as they pass from one medium to another. This change in direction and speed can result in the bending of sound waves, leading to phenomena such as sound focusing or dispersion.
Sound can refract in different mediums due to changes in the speed of sound waves as they travel from one medium to another. When sound waves enter a new medium at an angle, they can change direction and bend, causing the sound to refract. This bending occurs because sound waves travel at different speeds in different mediums, which causes them to change direction as they move from one medium to another.
When light passes through different mediums, such as air, water, or glass, the distance between waves (wavelength) can change. This is because the speed of light varies in different mediums, causing the wavelength to either increase or decrease.
The three different mediums through which waves can travel are solids (such as metal rods), liquids (such as water waves), and gases (such as sound waves in air). Waves can also travel through other mediums such as plasma and vacuum.
When sound waves pass through different mediums, they can refract, or change direction, due to differences in the speed of sound in each medium. This change in direction occurs because the speed of sound is different in each medium, causing the waves to bend as they travel from one medium to another.
Waves in different mediums travel at different speeds. This is due to differences in the properties of the mediums, such as density and elasticity, which affect how quickly the wave can propagate through them.
Sound waves can refract in different mediums due to changes in the speed of sound caused by variations in temperature, pressure, and density. When a sound wave enters a medium with a different speed of sound, it can change direction, bending towards or away from the normal line, which is the imaginary line perpendicular to the interface between the two mediums. This bending of sound waves is known as refraction.
When sound waves move through different mediums, such as air, water, or solids, they can change in speed and direction. This can affect how the sound is perceived by our ears, leading to differences in volume, pitch, and clarity.
Sound waves are reflected differently in different mediums based on their properties. When sound waves encounter a boundary between two mediums with different densities, some of the wave energy is reflected back while some is transmitted through the medium. The amount of reflection depends on the difference in density between the two mediums. Sound waves can also be absorbed or refracted when passing through different mediums, affecting how they travel and interact with the environment.
refraction, which is the change in direction of a wave due to a change in its speed. It occurs because light waves travel at different speeds through different mediums.