0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Why do papers turn clear when touched by a liquid?
Paper is composed of many small fibres which are separated by air. When a beam of light passes through the fibres, it gets highly refracted by the air. The difference in refractive indices of the fibre and air lead to greater change in the angle of refracted light. As a result, most of the refracted light beams subsequently fall on fibres and is scattered off the paper in a more or less random direction. The amount of reflected light is great and hence we see a bright white paper. Paper has two sides. Let's call them 1 and 2. From side 1, light passes into the paper but a lot of rays are reflected and only a few actually pass through the paper. When you are looking at the paper from side 2, you cannot distinguish the small amount of refracted light coming from side 1 through the paper because at side 2 also, light will try to pass through and will largely get reflected. Thus you cannot see the light from the objects behind the paper effectively. When the paper is wet with water (a liquid), the air between the fibres is replaced by water. Water has a higher index of refraction than air and so the relative index of refraction between water and the fibre is much lower than between air and the fibre. As light passes through the water, it is bent less and mostly hits another water molecule. This way, it will travel through the water in the paper and passes out of the other side. And each time light passes through, it gets dimmer. So it will be a lot dimmer when it leaves the paper. Even if the intensity is low, the amount of light passing through the paper will be large. Also, the surface tension of water molecules bind the loose fibres and thus reflection is reduced. From side 1, the light is passing through. Most pass through the paper and very little is reflected back. Thus you see a dark, wet paper. The same happens on side 2 and a large amount of light passes through to the side 1. When you look at the paper from side 1, you can see what's behind the paper as the light rays reflected off them reach your eyes through the paper. Since both sides are wet, they are similar in behaviour. Additional info: Through a wet paper, you may see only the writings on the back of the paper or objects very immediately behind it. This is because light rays from farther objects reaching the paper may not be intense enough after passing through the wet paper. When paper comes in contact with oil (a liquid), the same happens. But the relative index of refraction between oil and the fibre will be very much less. Thus, most light rays pass through and the paper becomes translucent.
How can you make paper translucent?
you can make paper translucent by putting water on the paper
Is the filtrate the body that remains on or passes through the filter paper?
The filtrate is the liquid which passes through the filter paper
How do you make margins in short bond paper?
how to make margin in short bond paper
Why does the the water passes through the filter paper but not the cornstarch?
The water actually passes through the filter paper and the cornstarch. However, the cornstarch does not pass through the filter because the molecules are to large.
What is see-through paper called?
If the paper is truly see-through, then it is transparent. If you can see light through it, but not a clear image, then it is translucent.
What labor skills do you need to make toilet paper?
THE ABILITY TO SEE THROUGH WALLS.
What see-through paper starts with c?
Transparent, or see-through paper, is called cellophane.
Can you see through a paper cup?
no :-(
How do you make paper from fruit fibers?
you dont. you make paper from wood.
What is tracing paper and where can you find it?
tracing paper is very thin paper you can see through, you can buuy it at just about any art store.
Why paper or wood cant be used to make umbrella?
Water can go through wood and paper.
How do you make a chicken beak out of paper?
You can make a chicken beak using origami, the art of folding paper. Through a series of folds you can make a piece of paper resembling a chicken's beak.
How Do You Walk Through A Piece Of Paper?
Cut a hole in it. (see related question)
Is a layout pad the same as tracing paper?
Tracing paper is much more transparent (see-through) than layout. Layout is closer to regular paper.
Is wrapping paper and cellophane paper same?
No, wrapping paper is a thicker paper used to wrap gifts, while cellophane paper is a thin, transparent film often used for wrapping gifts or food items. Cellophane paper is more flexible and has a shiny appearance due to its plastic properties.
How do you make a paper ninja airplane?
See the video tutorial below . . .
