Why are Rupert s tears contradictory and how to understand them?

It is generally accepted that glass is a very pure material, but it is very fragile and in many cases cannot be well preserved. However, in the process of making glass, people accidentally discovered a unique phenomenon - Rupert's tears.

Legend has it that this tadpole-shaped glass first appeared in the royal palace and was discovered by a prince named Rupert and was used to tease people. In fact, as early as the 17th century, this kind of glass was already made in the Netherlands, so it is also called "Dutch tears", and this unique object occasionally appears in the course of natural volcanic eruptions.

It is reported that Rupert's Tears is tadpole-shaped, with a smooth drop-shaped tip that can withstand tremendous pressure, while the slender and tortuous tail is very fragile and difficult to withstand external forces. In other words, the tip of Rupert's Tears is able to withstand the impact of a bullet and is "unscathed", while a slight pinch of its tail will shatter it completely.

It is surprising and at the same time eager to understand the mysteries, and as a unique phenomenon, Rupert's Tears contains great mysteries.

As an amorphous solid substance, glass also needs to be melted at high temperature and cooled in the manufacturing process, and the color and texture of glass with different compositions will also have certain differences. Rupert's Tears does not have many special features in the material, but the mechanical properties are reflected in the shape.

Scientists say that when Rupert's tears are in a molten state, they are immediately cooled by water, and the internal expansion by heat and the condensation and contraction of the outside form a mutually opposing force, and this high-tension state is like a solid arch bridge.

At the same time, these repetitive forces are able to form a chain that extends to the tail, and if this balance is broken, the whole of Rupert's Tears will be shattered.

On this basis, scientists have taken chemistry and mechanics to a deeper level**, and Rupert's tears also appear in nature, but this phenomenon is very rare. Inspired by this, scientists have also invented the quenching method to make tempered glass, and perhaps they will play an even greater role in future research.

Because Rupert's Tears are immediately cooled in water when they are in a molten state, the inside expands by heat and the outside condenses and shrinks, and the two form a kind of opposing force, and this high tension state is like a solid arch bridge. At the same time, these repeated forces are able to form a chain that extends to the tail, and if this balance is broken, the whole of Rupert's Tears will be shattered.

Can resist bullets, but can't withstand the gentle pinch of fingers, why are Rupert's tears contradictory?

Rupert's Tears refers to the tadpole-shaped or teardrop-shaped glass found by a legendary prince named Rupert, so it is named after him.

Rupert's Tears paradoxically refers to the fact that the sleek tip of the drop is able to withstand tremendous pressure, but the tail is slender and tortuous and fragile. Therefore, the front end of Rupert's Tear can withstand the impact of the bullet and withstand the tremendous pressure, but the tail cannot withstand the external force, and even a slight pinch will cause it to shatter completely.

As a contradictory unity of "solid" and "fragile", scientists have studied and believed that Rupert's Tears expand when heated internally and condense and contract externally when in a molten state, forming a mutually opposing force, just like a strong arch bridge can withstand pressure. But this force extends to the tail, and if this balance is broken, it will cause the entire Rupert Tear to shatter.

In general, it still reflects the mechanical properties.

The principle of Rupert's tears shattering, called "crack propagation", stems from the uneven pressure inside it: when the molten glass drips into the ice water, the surface of the glass rapidly cools to form an outer shell, while the glass underneath the shell remains liquid. When the glass in the core is also cooled and the condensation volume becomes smaller, the liquid glass naturally pulls the already solid shell and shrinks, resulting in a large compressive stress on the glass near the surface, and at the same time, the core position is also pulled to the surrounding area, and is subjected to tensile stress.

When the exterior is damaged, these residual stresses are quickly released, so that the crack instantly spreads throughout the whole and is fragmented, according to the observation of high-speed photography technology, the transmission speed of the crack can reach 1450 meters to 1900 meters per second.

In addition, the distribution of pressure can be seen with a crossed polarizer:

How hard is Rupert's Tears? Shoot the head of the glass with a bullet, and an interesting phenomenon happens.

Rupert's Tears is a glass artifact that was discovered by a Rupert prince.

Rupert's tears, molten glass naturally drip into ice water under gravity, forming tadpole-shaped "glass teardrops", commonly known as "Rupert's tears".

The teardrop itself is much harder than ordinary glass and can not break under 8 tons of pressure, however, if you grab its slender tail and apply a little pressure, then the whole glass tear will burst and shatter in an instant.

Rupert's tears, molten glass naturally drip into ice water under gravity, forming tadpole-shaped "glass teardrops", commonly known as "Rupert's tears".

These tadpole-shaped "glass teardrops" are formed when molten glass is naturally dripped into ice water by gravity.

Rupert's Tears glass has a wonderful physical property: the teardrop itself is much harder than ordinary glass, and can not shatter under a pressure of 8 tons, however, if you grasp its slender tail and apply a little pressure, then the whole glass tear will burst and shatter in an instant.

After the glass is melted and dripped into the water, the tear-shaped glass obtained is extremely hard, because when Rupert's Tears is cooled, the inside and outside of the head are not the same cooling rate, the surface hardens rapidly, and the inside gradually shrinks, so that Rupert's Tears produce a large residual stress, of which the compressive stress can be 7000 atmospheres. The head can withstand 20 tons of pressure, and there is no problem with hard bullets.

There is something that is almost indestructible, capable of withstanding nearly 20 tons of pressure, but is so fragile that it shatters instantly at the slightest pinch, and these two contradictory properties are perfectly combined, and this thing is the "Rupert Tears".

"Rupert's tears" are the natural dripping of molten glass into ice water by gravity, and these tadpole-like "glass teardrops" are formed.

The glass rod is melted by high temperature, and then instantly cooled by water, forming crystals like tears. This is Rupert's Tears.

How hard is Rupert's Tears? Shoot the head of the glass with a bullet, and an interesting phenomenon happens.

What is the principle of "Rupert's Tears", which is made of glass, which cannot be broken with a hammer?

Rupert's tears, molten glass naturally drip into ice water under gravity, forming tadpole-shaped "glass teardrops", commonly known as "Rupert's tears".

It's a glass drop, a bit like a water drop.

What are Rupert's Tears? Why does glass that can't even be penetrated by bullets shatter when pinched?

I believe that everyone is no stranger to glass, and we will encounter many kinds of glass in our daily life. Glass is an amorphous and non-metallic organic material, most of which are made of a variety of inorganic ores as raw materials, such as quartz sand, boric acid, borax, barite are its main materials, in addition to a small amount of auxiliary raw materials can be made of glass. But the discovery of glass by a prince Rupert, commonly known as the "Rupert's Tears", is very interesting.

Rupert's tears are tadpole-like glass tears when molten glass is naturally dripped into ice water. Its magic lies in its head, which can withstand 20 tons of pressure, and even if you shoot it with a bullet, it will only leave a small scratch. But if you hold on to its tail, with the slightest pressure, the whole Rupert Tear will start to crack from the tail to the head, and in less than a few seconds, it will be shattered.

When the molten glass is dripped into ice water, the surface of the glass will cool quickly to form a hard shell, but the glass under the shell is still in a liquid state, and when the liquid in the shell gradually becomes solid, the liquid glass that has not yet cooled shrinks to the shell due to the change in the accumulation, causing the shell to be subjected to strong pressure, and the center will also be subjected to the corresponding pulling force around it.

In other words, as long as the internal balance of "Rupert's Tears" is broken, it can be disintegrated, but because its head and body have a solid shell, it is difficult for external forces to break it, and the only way is to let it break itself from the inside out. Isn't that amazing! The tail is the only weak point of Rupert's Tears, the entire tail is connected to the center, and with a little force, the tail will break and extend all the way to the head, causing the whole object to be shattered in an instant.

The conduction velocity of this crack reaches 1450-1900 meters per second.

Because the structure of "Rupert's Tears" is unevenly stressed, so it can withstand huge pressure, and later drop-shaped submarines are designed according to this principle, and now this principle is also frequently used in production and life.

For the fatal drawback of "Rupert's tears", many people will think of removing or shortening the tail, and some people think that in a weightless environment, "Rupert's tears" will become a sphere, and there will be no tail, so it should be flawless, but I don't agree with this method, not to mention the difficulty of its experiment in a vacuum state, even if it can, it is impossible to ensure the accuracy of the cooling point and cooling speed, and it is a little difficult to make a perfect spherical shape. On the other hand, the original "Rupert's Tears" is because of the uneven shape, resulting in a hard and indestructible head, if it is really made into a spherical shape, how different is it from reshaping into a spherical glass!

There is something that is almost indestructible, capable of withstanding nearly 20 tons of pressure, but is so fragile that it shatters instantly at the slightest pinch, and these two contradictory properties are perfectly combined, and this thing is the "Rupert Tears".

After the glass is melted and dripped into the water, the tear-shaped glass obtained is extremely hard, because when Rupert's Tears is cooled, the inside and outside of the head are not the same cooling rate, the surface hardens rapidly, and the inside gradually shrinks, so that Rupert's Tears produce a large residual stress, of which the compressive stress can be 7000 atmospheres. The head can withstand 20 tons of pressure, and there is no problem with hard bullets.

The meaning of love is: love is indestructible.

Rupert's tears are tadpole-shaped glass teardrops formed by molten glass naturally dripping into ice water under gravity. The characteristic is that the teardrop itself is much harder than ordinary glass, and can not break under 8 tons of pressure, however, if you grab its slender tail and apply a little pressure, then the whole glass tear will burst and splash in an instant, and completely shatter.

Love Meaning of Rupert's Tears: Love is like Rupert's tears of heart, tenacious.

These glass teardrops have a wonderful physical property: the teardrops themselves are no different from solid glass, and they are safe to pinch and hammer. However, if you grasp its slender tail and apply a little pressure, the entire glass tear will burst and shatter in an instant.

The teardrop itself is no different from solid glass, the pinching hammer is unharmed, and the head of the teardrop will not shatter with a bullet, however, if you grasp its slender tail and apply a little pressure, then the whole glass tear will burst and shatter in an instant.

More and more people are giving Rupert's Tears the meaning of love. May each of us have a heart like Rupert's tears, perseverance; May each of us have the one who knows all your weaknesses, loves you, protects you, and accompanies you all the way.

May you have a heart that is as strong as Rupert's tears, and all things cannot be destroyed, but I hope you also have a person who knows your heart well and can better feel the weakness hidden behind a strong heart.

The meaning of love in Rupert's Tears mainly expresses the perseverance of love and will not be disturbed by any external objects. Let the love between two people be as firm as Rupert.

The meaning of love in Rupert's tears is: love is like Rupert's tears, the heart is tenacious.

May you have Rupert's tear-like heart, indestructible, but may there be someone who will finally know your heart, a little indulgent and broken. May you have someone to sing during the day, and someone to be the companion of youth. May you have mountains and moons that don't know what to do, and there are people who are blindly happy.

The reason why Rupert's tears are called the tears of the god of love is because love, like Rupert's tears, seems to be strong, but it can't help but touch the weakness, when you touch and oppress it, it will slam and shatter. Some people are too persistent to touch the tail of Rupert's tears, and in the end they can only lose both.

The meaning of love in Rupert's tears: May you have a heart like Rupert's tears, all things are indestructible, but I also hope that one person will finally know your heart, and it will be broken in a little bit.

The tadpole-shaped "glass teardrops" formed by melting glass and dripping it into ice water are Rupert's tears. It can shatter bullets head-on, but it's so weak that it shatters at the touch of a button. If you grasp its slender tail and apply a little pressure, the whole glass tear will burst and shatter in an instant.

This teardrop-shaped glass is so hard that it won't shatter even if you hit it with a mallet. But as soon as the tail of the glass droplet is broken, it will suddenly burst into powder. This kind of thing was also brought to the imperial court and used to tease people, and was called "Rupert droplets".

Therefore, this classic scientific confession, "May you have Rupert's tear-like heart, all things are indestructible, but I also hope that one person will finally know your heart, and it will be broken if you are a little bit." It means "May you have a strong heart, and there is a person (me) who loves you and understands you very well".

Why is the tadpole-shaped "Rupert's Tears" so hard and yet so fragile? This question, which has puzzled scientists since the early 17th century, has finally been answered. The principle of Rupert's tears shattering is called "crack propagation" and stems from the uneven pressure within it.