0
What happen if the needle place on a small tissue paper and very gently put the paper on the surface of water?
Wiki User
∙ 6y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Why does a paperclip float?
Items needed.a tissue paper (half the size of a dollar bill)a paper clipa bowl full of waterpencil with erasermethod.1.Fill the bowl with waterTry to make the paper clip float...not much luck, huh?Tear a piece of tissue paper about half the size of a dollar billGENTLY drop the tissue flat onto the surface of the waterGENTLY place a dry paper clip flat onto the tissue (try not to touch the water or the tissue)Use the eraser end of the pencil to carefully poke the tissue (not the paper clip) until the tissue sinks. With some luck, the tissue will sink and leave the paper clip floating!how is it possible?How is this possible? With a little thing we scientists call SURFACE TENSION. Basically it means that there is a sort of skin on the surface of water where the water molecules hold on tight together. If the conditions are right, they can hold tight enough to support your paper clip. The paperclip is not truly floating, it is being held up by the surface tension. Many insects, such as water striders, use this "skin" to walk across the surface of a stream.
Why does a sheet of tissue paper rise when you blow air above the tissue paper?
Tissue paper is not very dense. I assume it is one piece and is on a flat surface. When blowing down straight and in the middle, air is able to move through the tissue paper because it is porous. You keep forcing air down and the molecules are bombarding each other and when completely through the tissue paper the fastest way to escape and allow the other molecules through is by escaping under the tissue paper and outwards. This is what lifts the tissue paper.
Why does a sheet tissue paper rises when you blow air above the tissue paper?
Tissue paper is not very dense. I assume it is one piece and is on a flat surface. When blowing down straight and in the middle, air is able to move through the tissue paper because it is porous. You keep forcing air down and the molecules are bombarding each other and when completely through the tissue paper the fastest way to escape and allow the other molecules through is by escaping under the tissue paper and outwards. This is what lifts the tissue paper.
How do they peirce the cartilage on a ear?
The best way to pierce ear cartilage (or any cartilage) is with a needle. Using a piercing gun (a machine which fires a sharpened stud through tissue) is generally a bad idea as they tend to crack the surrounding cartilage because guns were not designed to pierce cartilage. This cracking results in a longer healing time, more pain, and can cause wonky piercings and increase your chance of keloids (bumps of scar tissue around the piercing). So, with a needle the procedure is simple. A straight, bevelled, medical grade needle, usually 14 or 16 gauge is pushed through the ear. The jewellery then slides through afterwards. Easy.
What would happen if you stuck your head in a microwave?
The water molecules at the spot where the emitter is focused would become excited, eventually vaporizing and cooking the surrounding tissue.
How can a sewing needle float on the surface of water?
The needle does not break the surface tension (meniscus). Get a small piece of toilet tissue and lay it on a glass of water. lay a needle on the tissue. The tissue will become sodden and sink, leaving the needle floating on the surface tension. Put the smallest drop of washing-up liquid on the water. The surface tension will be destroyed and the needle will sink. Try it.
How can you break the attachment of molecules in the surface tension?
The surface tension of water can be broken by adding dishwashing detergent to the water. This can be demonstrated by filling a bowl with water, then floating a needle in it. This may sound almost impossible, but it can be easily achieved by placing the needle on a tissue, then carefully floating it on the water. When the tissue sinks, the needle should remain on the surface. It is prevented from sinking by the water's surface tension. Carefully add one drop of dishwashing detergent, and the needle will sink. You can prove this was due to the surface tension being broken by trying to float the needle again. If you added enough detergent this should be impossible, as detergent acts as a wetting agent and breaks the surface tension.
Why does a needle float in water?
It doesn't actually float, since its density is greater than water. It is kept from sinking by the surface tensionof the water. This phenomenon is created by the formation of polar bonds between the surface water molecules. To make this happen, the needle must be carefully placed on the calm surface of the water, usually held in a container like a glass tumbler (easier to keep the surface calm, than in a wider container like a bowl).If you wish to prove this principle, here is a very successful method:1. Place a piece of tissue, slightly larger than the needle is long, flat on the surface of the water.2. Lay the needle carefully on the tissue.When the tissue becomes saturated and sinks away from the needle, the needle will remain on the surface of the water. If you wish, once the tissue sinks, It can be removed (carefully) from the system with tweezers. Then you can amaze your friends with your imponderable, impossible feat, of floating a needle. This method will work with a paper clip as well. Any metal object, with smooth surfaces and not too heavy, may be used.Tip: shape matters. Common pins have been used, but often they won't work because their heads breach the tension membrane.More Information:Surface tension. The needle is thin and light, so it just lays on the water. Surface tension is what we call a thin flexible membrane, formed by the polar bonding of surface water molecules, to each other. like a water bed for very light objects.
How do they get a tissue sample for a tzanck preparation?
A fresh blister is opened with a scalpel or sterile needle. The physician scrapes the base of the blister with the scalpel, gathers as much cellular material as possible, and gently spreads it on a microscope slide.
What technique is used to collect a tissue for biopsy of the prostate?
The tissue sample can usually be obtained with the needle technique.
What is the difference between mobilizing tissue and surgically undermining tissue?
Mobilizing tissue you clamp and cut. Undermining tissue you take scissors and gently seperate the tisuue from the surrounding tissue.
Why the food making tissue is at the top surface of the leaf?
why is the food-making tissue at the leaf surface why
Which lab work is done before a biopsy and what is the benefit of a needle biopsy?
What happens is they have a ultra sound to see where it is exactly and they mark they have a tendency to get more tissue with a needle biopsy they can extract a better piece of tissue sample sometimes they can get the whole tissue sample this way
Can you have a lung needle biopsy with emphysemea?
No. A lung needle biopsy is used to pull a sample of tissue from the lungs for testing. A lung needle biopsy should NOT be done with someone who has Emphysema.
What is a fine needle core biopsy?
it is a procedure where a thicker niddle use to take a core of tissue from organ
What is the medical term meaning biopsy is done with a large gauge needle inserted into the tumor to obtain several long pieces of tissue?
Fine needle aspiration is done with a large-gauge needle.
Type of tissue that covers the body surface?
epithelial tissue
