Sentences with phrase «of diamond formed»

Schultz, professor of geological sciences at Brown and an impact specialist, said the most provocative evidence for an extraterrestrial impact was the discovery of nanodiamonds, microscopic bits of diamond formed only from the kind of intense pressure you'd get from a comet or meteorite slamming into the Earth.

When the shock waves overlap, that's the moment the pressure peaks and when most of the diamonds form, Kraus said.

Because of the chemical makeup and high pressure of Neptune and Uranus» atmospheres, scientists have long speculated about the possibility of diamonds forming mid-atmosphere, and falling down like rain on these planets.

Not exact matches

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

The aluminum handle has cross-sectional grooves that form diamond shapes on the majority of the handle.

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 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.

Some of these «unknown» carbon based life - forms turns out to be a diamond, others graphite.

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.

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.

-- that it is easy to forget that its job is to run 563 parks covering 6,766 acres and containing, among other things, 817 baseball and softball diamonds, 706 tennis courts, 251 field houses, 57 swimming pools, 6 golf courses and a court where you can play roque, a form of croquet.

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.

Tiny blobs of material trapped inside large, clear diamonds (such as this one) as they formed suggest the gems formed within pockets of liquid metal deep within Earth.

The substance, which consists of a fluid of hydrogen ions running through a lattice of oxygen, was formed by compressing water between two diamonds and then zapping it with a laser.

Many of those tiny blobs were long thought to be bits of graphite — like diamond, another form of pure carbon — and were thus cut away and discarded by jewelers.

The new studies, he says, «go a long way toward providing an explanation of where these diamonds form.»

That's at least 100 times larger than the nanodiamonds that form when planetary objects collide, and it's far larger than diamonds that form by condensing from carbon vapor inside clouds of interplanetary gas and dust.

As the diamond crystals form, they can enclose tiny amounts of fluid or rock from their surroundings.

The pressures were high, up to 5 GigaPascals (50,000 times the Earth's atmospheric pressure), which is the sort of pressure where you can form diamonds.

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.

Hunting for novel forms of carbon, scientists have unexpectedly discovered a new way to make an old form — diamonds.

«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.

The particular composition and morphology of these materials can only be explained if the pressure under which the diamonds were formed was higher than 20 GPa (giga - Pascals, the unit of pressure).

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.

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.

«One of the developments that makes our fabrication process innovative is that we deposited yttrium oxide (Y2O3) insulator directly onto the surface of the diamond [to form the gate],» said Liu.

GRUBBY, grey graphite and searing, scintillating diamond — both forms of the same thing, elemental carbon.

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 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

And that pressure, acting on the carbon - rich makeup of the white dwarf, may have crystallized much of it to the particular form of carbon we call diamond.

The diamond - like form of silicon is a semiconductor and other known forms are metals, but the true properties of Si - III remained unknown until now.

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

And they contain diamonds that were formed by subsurface high pressures billions of years ago but have been protected by the relatively low temperatures there.

When a meteorite containing graphite slams into the earth, the collision's heat and pressure can transform this form of carbon into a rare and extremely hard type of diamond.

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.

Researchers at the Denver Museum of Nature & Science and University of British Columbia recently analyzed diamonds from the Museum's collection and learned how an unusual chunk of Africa formed.

These cagelike molecules constitute the third form of pure carbon (the other two are diamond and graphite).

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 conditions.

«We can use the inclusions to date different parts of an individual diamond, and that allows us to potentially look at how the processes that formed diamonds may have changed over time and how this may be related to the changing carbon cycle on Earth.»

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

The researchers determined that the diamonds formed as thinner continental fragments and began their journey beneath the thick, buoyant continental crust of central Africa.

«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.

Diamonds are formed hundreds of kilometers below the surface, as carbon is squeezed under intense temperatures and pressures.