when the pencil enters the water
Light waves change speed when they travel from air into the material of the pencil, and then change speed again when they exit the pencil back into the air. This change in speed causes the light waves to refract or bend.
The appearance of a pencil (e.g., bending when immersed in water) is due to the change in speed of light waves as they pass from one medium to another. This change causes the light waves to refract, leading to the appearance of the pencil being altered from the observer's perspective.
When a pencil is placed in water, light waves are refracted as they pass through the water, causing the pencil to appear bent or split. This is due to the change in speed of light as it moves from one medium (air) to another (water), creating an optical illusion that makes the pencil look split.
A pencil has nothing to do with the brightness of a light bulb.
A "pencil lead" is a mixture of the graphite allotrope of carbon mixed with clay and baked hard. While a pencil lead will conduct electricity, it can not be used to make a light bulb.
The light waves coming from the pencil change speed when they move from air (faster speed) to the glass or water (slower speed). This change in speed causes the light waves to refract or bend.
The light waves change speed at the interface between the air and water, causing them to refract or bend. This occurs because light waves travel at different speeds in different mediums due to differences in their refractive indices.
Light waves change speed when they travel from air into the material of the pencil, and then change speed again when they exit the pencil back into the air. This change in speed causes the light waves to refract or bend.
The appearance of the pencil is due to how light is reflected off its surface. When light waves hit the pencil, they can be absorbed, transmitted, or reflected. The change in speed of the light waves as they pass through the material of the pencil can affect how much light is reflected and perceived by our eyes, resulting in the appearance of the pencil.
because the pencil take the a litte enrgy.
Nothing happens when the ray of light hits the pencil. But it bends when it crosses the boundary between the air and the water. Your brain ... thinking that the end of the pencil is in the same direction that the ray of light is coming from ... thinks that the part of the pencil under the water is in a place where it's not, so the pencil appears bent at the water line.
When light passes from air to water, its speed changes, causing it to bend or refract. This refraction at the boundary of air and water causes the light rays coming from the pencil to change direction, creating an optical illusion that makes the pencil appear broken at the boundary. This phenomenon is known as refraction and is a result of the change in the speed of light as it moves from one medium to another with a different optical density.
A pencil in water looks bent because of refraction. when light enters a substance with a different density than the one it came out of, the light either slows down or speeds up. this makes the light appear bent. If there is a pencil in the water, it appears bent because the light is traveling at different speeds through water and air.
When light passes from one medium to another of different optical density, it changes speed, causing the light rays to bend. This bending is known as refraction. When you see the pencil in a glass of water, the light rays coming from the pencil bend as they move from the water into the air, creating the illusion that the pencil is bent at the water's surface.
Refraction will make the light change direction, when it changes from water to air.Refraction will make the light change direction, when it changes from water to air.Refraction will make the light change direction, when it changes from water to air.Refraction will make the light change direction, when it changes from water to air.
When light travels from water to air, it changes speed and bends, causing the pencil to appear bent. This effect is known as refraction. The change in speed causes the light rays from the pencil to change direction as they pass through the interface between water and air, creating the illusion of a bent pencil.
The appearance of a pencil (e.g., bending when immersed in water) is due to the change in speed of light waves as they pass from one medium to another. This change causes the light waves to refract, leading to the appearance of the pencil being altered from the observer's perspective.