* base line * orthogonal projection * Versine co-ordinate The above may (or may not; the first two seem wrong and I don't think I've ever heard of the third) be correct, but I suspect the term you're looking for is surface normal or normal vector.
normal.
No, a light wave will not refract if it enters a new medium perpendicular to the surface. This is because refraction occurs when light enters a new medium at an angle, causing it to change speed and direction. When light enters perpendicular to the surface, there is no change in speed or direction, so refraction does not occur.
Surface waves are where particles of the medium move both parallel and perpendicular to wave motion. This movement creates a circular motion pattern. An example of a surface wave is water waves on the surface of a pond.
Snell's law equates the ratios of two angles and wave velocity.sin(a)/V1 = sin(b)/V2When a wave strikes a medium some energy is reflected and some passes through.a is the angle between the longitudinal wave velocity of the wave in the first medium as measured from a perpendicular to the tangent of the surface of the medium.b is the angle between that perpendicular and the longitudinal wave as it is refracted within the medium.The angle of incidence refers to these angles.Clearly, if the wave strikes perpendicular to the surface, a = b = 0 and sin(a) = sin(b) = 1
When light passes from one medium to another, it can be bent towards or away from the normal line (imaginary line perpendicular to the surface of the interface) depending on the relative optical densities of the two media. If the light is entering a denser medium, it will be bent towards the normal; if it is entering a less dense medium, it will be bent away from the normal.
normal.
Only about 4% is reflected, the rest is transmitted. 3. (29.1) When light strikes perpendicular to the surface of a pane of glass, how much light is reflected and how much is transmitted? Normal to the surface refers to a line that is drawn perpendicular to the surface (90°).
No, a light wave will not refract if it enters a new medium perpendicular to the surface. This is because refraction occurs when light enters a new medium at an angle, causing it to change speed and direction. When light enters perpendicular to the surface, there is no change in speed or direction, so refraction does not occur.
Surface waves are where particles of the medium move both parallel and perpendicular to wave motion. This movement creates a circular motion pattern. An example of a surface wave is water waves on the surface of a pond.
Snell's law equates the ratios of two angles and wave velocity.sin(a)/V1 = sin(b)/V2When a wave strikes a medium some energy is reflected and some passes through.a is the angle between the longitudinal wave velocity of the wave in the first medium as measured from a perpendicular to the tangent of the surface of the medium.b is the angle between that perpendicular and the longitudinal wave as it is refracted within the medium.The angle of incidence refers to these angles.Clearly, if the wave strikes perpendicular to the surface, a = b = 0 and sin(a) = sin(b) = 1
If by "straight on" you mean at 90 degrees to the surface of the medium, that is because light is only deviated if it makes an angle with the normal, which is an imaginary line perpendicular to the surface of the medium. If no angle is made between the normal line and the light ray, then no refraction occurs and the light passes through in a straight line. For more information see the related link below.
When light passes from one medium to another, it can be bent towards or away from the normal line (imaginary line perpendicular to the surface of the interface) depending on the relative optical densities of the two media. If the light is entering a denser medium, it will be bent towards the normal; if it is entering a less dense medium, it will be bent away from the normal.
The refractive index of air is about 1.0003, and of quartz about 1.45, so quartz is the more "optically dense" medium in this situation. When light goes from a less dense medium to a more dense medium, it is refracted toward the normal. The normal is the imaginary line perpendicular to the surface where the light enters.
When light passes through a surface and changes direction due to refraction, the normal is an imaginary line perpendicular to the surface at the point where the light ray meets it. This line helps determine the angle of incidence and angle of refraction, which are crucial in understanding how light behaves when it enters a different medium.
When a light wave passes from a less dense to a more dense medium, such as air to glass, it slows down and bends towards the normal (an imaginary line perpendicular to the surface). This phenomenon is known as refraction. The change in speed and direction of the light wave is due to the change in the medium's refractive index.
Radiation that strikes the interface parallel to the normal, i.e. perpendicular to the boundary, is not refracted.
When light travels into a denser material, such as glass or water, it bends away from the normal line, which is an imaginary line perpendicular to the surface at the point of incidence. This is known as refraction and is caused by the change in speed of light as it moves from one medium to another.