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Light is affected by the media that it travels through. Even air will bend light. Glass and water certainly bend light.
Slows IF it enters the water from air (and not - say - glass).
light rays bend away from normal as it passes from denser water to rarer air
The light will bend as it passes through.
Water's particles are denser than air's, so when the light enters water, the light rays slow down, so travel at a shallower angle to the angle at which the light enters (incidence).
if the ray of light enters the water from air,refraction takes place and the ray of light will bend towards the normal due to higher optical density.
Light is affected by the media that it travels through. Even air will bend light. Glass and water certainly bend light.
Slows IF it enters the water from air (and not - say - glass).
The ray will bend towards the normal.
light rays bend away from normal as it passes from denser water to rarer air
The light will bend as it passes through.
That would depend what it enters from. If the light is transitioning from air to water,its speed decreases. If it's going from jello to water, its speed increases.
The speed of light slows in water.
Water's particles are denser than air's, so when the light enters water, the light rays slow down, so travel at a shallower angle to the angle at which the light enters (incidence).
An interesting property of light called refraction just took place. When light enters the water, it can't move as fast and it has to slow down slightly. It's kind of like how if you are walking, you can walk at a normal speed but if you walk in water, you can't walk quite as fast. If light from the image enters the water straight, then the image looks normal - which was what you originally did when the pencil was straight up and down. If the light enters the water at an angle, then the change in speed between the open air and water causes the light beam to bend away from its original path. When the pencil was at an angle, the image was at a bigger angle in the water than in the air and made the pencil look like it was bent.
Refraction happens when a wave (such as light) enters a medium of different density, since the energy in the wave has to travel through a different amount of matter. Water would be more dense than air, so the wave will travel with less energy and bend closer to the normal.
what happens is that lenses bend light in a way that makes an image