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when the pencil enters the water
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∙ 11y ago
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Where do the light waves change speed from a pencil?
ACTUALLY ! Its when the pencil enters the water .
Can you light a light bulb with pencil lead?
No.
What effect would a pencil have on the brightness of a bulb?
A pencil has nothing to do with the brightness of a light bulb.
Why can pencil lead can be used to make 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.
Does eyesight have speed?
Yes. Light has a speed, electric impulses from the retina to the brain have speeds and the neurons in the brain have speeds.
Where do the light waves change speed from a pencil?
ACTUALLY ! Its when the pencil enters the water .
Why did the light bulb change brightness along the pencil?
because the pencil take the a litte enrgy.
Why does a spoon appear bent when immersed in a half filled glass of water?
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.
What happens when a ray of light falls on a pencil kept in the tumbler filled with water?
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.
What causes a prism to show colored light when you look into white light?
This is because when the white light it's the prism, the colours separate and change speeds.
Is a light bulb older or a pencil?
pencil is older.
Why does a yellow pencil appear yellow?
because a yellow pencil can only reflect yellow light and that yellow light is what you see from a yellow pencil.
When light is incident on a boundary between two mediums it often slows down or speeds up. when it does this the path the light travels can change. this is called?
refraction
What are the speeds of a long wave light compared to a short wave light?
Their speeds are exactly identical.
Can you light a light bulb with pencil lead?
No.
Why does a pencil look broken when placed in water?
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.
If a paper and pencil lead is connected to a light bulb circuit which one will turn on the light bulb?
The Pencil lead
