Sentences with phrase «diamonds form in»

Based on this recent analysis, it appears that these large gem diamonds form in a completely different part of the mantle than most common diamonds.

Geologists are still guessing how diamonds formed in the Earth from 1 billion to 3 billion years ago, according to a recent study in the journal Nature, but they think the recipe follows something like this:

Not exact matches

Once a rough diamond is formed, it's sent to one of several cutters the startup works with in Antwerp.

In the case of carbon atoms which can be arranged in such a way that they form a diamond, or in such a way that they form graphite, it is surely the form, the intelligible structure, that makes the differencIn the case of carbon atoms which can be arranged in such a way that they form a diamond, or in such a way that they form graphite, it is surely the form, the intelligible structure, that makes the differencin such a way that they form a diamond, or in such a way that they form graphite, it is surely the form, the intelligible structure, that makes the differencin such a way that they form graphite, it is surely the form, the intelligible structure, that makes the difference.

Such ideas, however, were there; the possibility of their fruition was rooted in the deep convictions of the prophets concerning them; to change the figure, though the slag of the Book was greater in the mass, diamonds of infinite value had been formed in it.

So Walcott will partner the in form Spurs striker Harry Kane in front of a midfield diamond and that should offer him a chance to show his pace, movement and finishing on the big stage.

The heart, soul and swagger of the Dallas Cowboys resurfaced on Sunday at Texas Stadium in the form of a man wearing an electric - purple suit, a diamond Superman necklace and gold - plated sunglasses.

The Hammers found a diamond in the form of Dimitri Payet and he was integral in their impressive season with his nine goals and twelve assists.

If we are going to play our most in form players then its a 442 diamond.

Nicolas Anelka is expected to drop to the bench as Ancelotti adopts a diamond formation with Didier Drogba and Fernando Torres in attack, as opposed to the 4 -3-3 formation which has seen the Blues enjoy a recent revival in form and score plenty of goals.

We also sing this during the day with actions and this week T has started to put her hands together to form a diamond, she has always loved the up move in it.

Lay the towel across the diamond shape formed by your legs and cradle your baby in the middle.

The handrails inside the diamond jubilee state coach are made from Royal Yacht Britannia timber and a wooden crown covered in gold leaf, which forms the centrepiece of the roof's decorations, was carved from oak from Nelson's flagship HMS Victory.

Such diamonds could form, however, inside asteroids that are at least 1,000 kilometers in diameter, where pressures would be high enough to compress carbon.

Diamonds form at high temperatures and pressures, crystallizing in pockets rich in the mineral carbonate before being carried to the surface with erupting magma (SN: 4/30/16, p. 8).

One production method, developed in the 1960s, recreates the high - pressure conditions that form natural diamonds deep in the earth — a costly and dangerous process.

The stone's noble gas content supports an extraterrestrial origin, while the presence of tiny diamonds — larger than nanodiamonds found in a common kind of meteorite called chondrites, but similar in size to diamond aggregates known to be formed by impacts — supports a cometary origin.

New evidence, in the form of diamonds several nanometers wide, supports a theory proposed last year that a comet collision or a similar explosive event threw up debris and caused the cooling.

A low - pressure method, developed in the 1980s, forms a thin diamond film by shooting a current through carbon and hydrogen gases, but the results are impure.

«Not only can this snapshot tell us about how, where and when certain diamonds form, it can tell us about more general features of the rocks in Earth's mantle.»

This level of internal pressure can only be explained if the planetary parent body was a Mercury - to Mars - sized planetary «embryo,» depending on the layer in which the diamonds were formed.

Current thinking is that these tiny diamonds can form in three ways: enormous pressure shockwaves from high - energy collisions between the meteorite «parent body» and other space objects; deposition by chemical vapor; or, finally, the «normal» static pressure inside the parent body, like most diamonds on Earth.

The larger and rarer rough diamonds analyzed in this study — those measuring around a centimeter or more on their longest side — formed deeper within the mantle, taking scientists» understanding of the mantle to new depths.

Trapped within large diamonds, slivers of embedded iron surrounded by special gases reveal that the precious gems were formed in liquid metal — a discovery that also confirms metal - saturated conditions deep in the Earth, a new study in the 16 December issue of Science reports.

In another twist, most (but not all) of the PAH in the Hypatia matrix has been transformed into diamonds smaller than one micrometer, which are thought to have been formed in the shock of impact with the Earth's atmosphere or surfacIn another twist, most (but not all) of the PAH in the Hypatia matrix has been transformed into diamonds smaller than one micrometer, which are thought to have been formed in the shock of impact with the Earth's atmosphere or surfacin the Hypatia matrix has been transformed into diamonds smaller than one micrometer, which are thought to have been formed in the shock of impact with the Earth's atmosphere or surfacin the shock of impact with the Earth's atmosphere or surface.

Diamonds, low temperatures and pressures way above what's found at Earth's centre were used to create a form of hydrogen foreseen back in the 1930s

Formed under ancient intense pressure deep in the mantle, these diamonds were occasionally spouted to the surface via volcanic eruptions.

The most - common form of silicon crystallizes in the same structure as diamond.

The team's simulations reveal that diamond - like carbon film is formed at the atomic level in a different way than was thought.

A nitrogen - vacancy center is an atomic - scale defect formed in the diamond lattice by substituting a nitrogen atom for a carbon atom and creating a neighboring void in the crystal lattice.

DEEP DEVELOPMENT Diamonds (dark grey) begin to form from minerals containing iron and magnesium (white) and from carbon - oxygen compounds called carbonates (light grey) in a scanning electron microscope image.

Scientists have long thought diamonds could form in subduction zones, where one tectonic plate plunges under another and sinks hundreds of kilometers into the mantle.

The results presented in this experiment is the first unambiguous observation of high - pressure diamond formation from mixtures and agree with theoretical predictions about the conditions under which such precipitation can form and will provide scientists with better information to describe and classify other worlds.

Extremely high pressure squeezes hydrogen and carbon found in the interior of these planets to form solid diamonds that sink slowly down further into the interior.

In an experiment designed to mimic the conditions deep inside the icy giant planets of our solar system, scientists were able to observe «diamond rain» for the first time as it formed in high - pressure conditionIn an experiment designed to mimic the conditions deep inside the icy giant planets of our solar system, scientists were able to observe «diamond rain» for the first time as it formed in high - pressure conditionin high - pressure conditions.

This allowed them to see the small diamonds that form in fractions of a second with a technique called femtosecond X-ray diffraction.

As photosynthesis favours the lighter isotope, carbon 12, over the heavier carbon 13, this «light» ratio finding suggests that organic material from biological sources may have been more abundant in diamond - forming zones early in the Earth's history than we find today,» explained Suzette Timmerman, lead author on the study.

«Higher temperatures in the Earth's interior before the GOE may have affected the way that carbon was released into the diamond forming regions beneath the Earth's continental plates and may be evidence of a fundamental change in tectonic processes.

«Unique diamond impurities indicate water deep in Earth's mantle: Scientific analysis of diamond impurities — known as inclusions — reveal naturally forming ice crystals and point to water - rich regions deep below the Earth's crust.»

This is a symmetrical reaction — because the pressure is coming from all sides, every part of the graphite shifts in the same way to form diamond.

If the researchers can use multiple diamond tips in different shapes and further control the process, «one can envision forming a predesigned ribbon network ready to serve as electrodes in a specific circuitry of a future device,» he says.

Using diamond anvil cells (DAC), the team applied 2.5 GPa of pressure (25 thousand atmospheres) to pre-compress water into the room - temperature ice VII, a cubic crystalline form that is different from «ice - cube» hexagonal ice, in addition to being 60 percent denser than water at ambient pressure and temperature.

Even in its elemental form, the high bond versatility of carbon allows for many different well - known materials, including diamond and graphite.

«The first step is to see the effect is there, but the next step is to implement quantum gates based on diamond,» says Benson, referring to the quantum analogue of the logic gates that form the integrated circuits in ordinary computer chips.

When mixed and annealed, the tetrahedral arrays formed superlattices with long - range order where the positions of the gold nanoparticles mimics the arrangement of carbon atoms in a lattice of diamond, but at a scale about 100 times larger.

The results presented in this experiment are the first unambiguous observation of high - pressure diamond formation from mixtures and agree with theoretical predictions about the conditions under which such precipitation can form and will provide scientists with better information to describe and classify other worlds.

In an experiment designed to mimic the conditions deep inside the icy giant planets of our solar system, scientists observed «diamond rain» for the first time as it formed in high - pressure conditionIn an experiment designed to mimic the conditions deep inside the icy giant planets of our solar system, scientists observed «diamond rain» for the first time as it formed in high - pressure conditionin high - pressure conditions.

Prior static compression experiments also saw hints of carbon forming graphite or diamond at lower pressures than the ones created in this experiment, but with other materials introduced and altering the reactions.

Methane forms hydrocarbon (hydrogen and carbon) chains that respond to high pressure and temperature to form «diamond rain» in the interiors of icy giant planets like Neptune.

Now, a team of WSU researchers has for the first time observed and recorded the creation of hexagonal diamond in highly oriented pyrolytic graphite under shock compression, revealing crucial details about how it is formed.