away from the normal
towards the normal
The change in speed causes the light to bend. If it is travelling from an optically dencer to an optically rarer medium the ray will bend away from the normal. But if it is travelling from an optically rarer to an optically denser medium then it will bend towards the normal.
When a ray of light slows down as it enters a new medium at an angle, it also changes direction. This change in speed and direction is called refraction. The amount by which the light bends depends on the difference in the speed of light between the two media.
The ray of light bends away from the normal when traveling from a less optically dense medium (medium A) to a more optically dense medium (medium B). Therefore, medium B is optically denser in this scenario.
When light travels from a less dense medium to a denser medium, it bends towards the normal. This is because light slows down in a denser medium, causing it to change direction. When light travels from a denser medium to a less dense medium, it bends away from the normal as it speeds up in the less dense medium.
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.
When light enters a denser medium from a rarer medium, it slows down, causing it to bend towards the normal. As the light exits the denser medium into the rarer medium, it speeds up and bends away from the normal. This change in speed and direction is why refraction occurs in a prism.
Light bends towards the normal when it enters a medium with a higher optical density because the speed of light is slower in that medium. This change in speed causes the light to change direction. The phenomenon is known as refraction.
As it changes medium, say through glass, water or air it slows down. This is demonstrated with the equation c / n = v which is the speed of light divided by the refractive index is the velocity through that medium. Because it slows down it bends towards the "normal" which is an imaginary line extending at 90 degrees the surface. As it leaves the medium it will either speed up or slow down which will either bend it away or further towards the normal.
Refraction is the bending of light as it passes through different mediums with varying densities. When light travels from a medium of lower density to a medium of higher density, it bends towards the normal, and vice versa. The speed of light changes as it moves through different mediums, causing it to bend.
Deflection physics explains how light changes direction when passing through different mediums due to the change in speed and wavelength of light. This phenomenon is known as refraction, where light bends towards the normal when entering a denser medium and away from the normal when entering a less dense medium.
Light bends towards the normal when it goes from air into water due to the increase in optical density of the medium, leading to a decrease in speed of light and hence bending towards the normal.