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What EM waves are used to see inside suitcases without opening them?
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Can waves bend as they pass through a narrow opening?
Yes
Waves pass an edge or an opening?
The waves would bend or deffract. Ex. Hearing voices outside the door of a classsroom.
What is the bending of waves as they move around a barrier or pass through an opening called?
Diffraction
How does the size of a barrier or opening affect the amount of diffraction of a wave?
Huygen's Principle tells us that, at each point that a propagating wave reaches, a spherical wave emanates outwards from that point. When we're looking at a plane wave propagating (without a collision), the spherical emanations from each point on the wave front cancel out in all but the forward propagation direction, which is why a plane wave continues to travel as a plane wave. When a wave strikes a barrier with a tiny opening in it, on the other side of the opening you can expect to see waves propagating outward radially from the opening. When the opening is wider, the spherical waves coming from the points towards the center of the opening nearly cancel out, but at the edges of the opening there isn't anything to cancel out with, so if you're not in line with the opening (as in, if you look at the nearest point in the opening, your line of sight is not perpendicular to the original wavefront), you will see the wavefront coming radially from the opening edge nearest you. The closer you are (angularly) to being in front of the opening, the more plane-like the wave will be. It is because of this same diffraction that we see an interference pattern when there are two small openings in the barrier. In this case, the radial waves will constructively and destructively interfere at different points beyond the barrier.
Is any sea without waves?
yes
What are the waves that travel the inside of the earth?
Body Waves
What are the waves that travel through the inside of earth?
Body Waves
The bending of a waves around a barrier or through an opening?
Diffraction
What is the bending of waves around barriers or through an opening?
Diffraction
Can waves bend as they pass through a narrow opening?
Yes
Waves pass an edge or an opening?
The waves would bend or deffract. Ex. Hearing voices outside the door of a classsroom.
Who was the opening act for Wham at Hollywood park in 1985?
Chaka Khan and Katrina and the Waves.
What is the bending of waves as they move around a barrier or pass through an opening called?
Diffraction
Are waves made by vibrating charges that can travel without a medium?
Electromagnetic waves.
What can electromagnetic waves transfer waves without?
Electromagnetic waves can carry energy from place to place without a medium. Further, any frequency of radiation from a mass transfers energy in the form of waves. As to whether it is with or without a medium is yet unknown and yet to be experimentally proved or disproved.
What are two ways that P waves are different from S waves?
Body waves travel through the inside of earth's surface.Surface waves travel through the top part of earth's crust
Waves made by vibrating charges that can travEl without a medium are called?
Electromagnetic waves.
