Sentences with phrase «formed under high pressures»

TRAPPIST - 1's planets are so wet that most of the water probably isn't even liquid, but ice formed under high pressure, says Cayman Unterborn, an exogeologist at Arizona State University in Tempe.

New calculations of the composition of TRAPPIST - 1f, the fifth planet from the star, suggest a relatively thin layer of water (still far deeper than anything found on Earth) gives way to ice VI and ice VII, two different forms of ice that can form under high pressures.

In 1990, Penfield obtained samples of rock formed under high pressure that suggested it was an impact feature.

The USGS, which announced the discovery, estimates there is about 700,000 tcf of gas hydrate worldwide, most of it below the ocean floors, where hydrates form under high pressure and cold temperatures.

Not exact matches

But they will be under pressure from a Leeds side who are running with high confidence on a long unbeaten streak of form in the second tier.

In addition, researchers replicated the conditions under which the fossils formed to identify the chemical alteration of melanin, subjecting modern feathers to high temperatures and pressures to better understand how chemical signatures changed during millions of years of burial.

Bizarre ice that forms under intense pressure and high temperatures may cause Neptune's and Uranus's odd magnetic fields.

Using a glassblowing technique, the thin glass wafer, under high heat and external vacuum pressure, forms an almost perfect bubble.

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 CO2 that remains is condensed, compressed to a liquid under high pressure, and cooled to — 18 degrees Fahrenheit, where it remains in liquid form.

Coesite is a polymorph of silica that only forms under extremely high pressure — 10,000 times more on average than normal atmospheric pressure.

Silica's various high - pressure forms make it an often - used study subject for scientists interested in the transition between different chemical phases under extreme conditions, such as those mimicking the deep Earth.

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.

After the researchers analyzed the inclusions — each just 15 to 40 microns wide, or one - sixth to two - fifths of the diameter of a human hair — they found the inclusions contained the entire range of minerals one would expect of a volcanic rock called basalt that originally formed at the planet's surface and then crystallized under extreme high pressures and temperatures.

Among the many discoveries on matter at high pressure that garnered him the Nobel Prize in 1946, scientist Percy Bridgman discovered five different crystalline forms of water ice, ushering in more than 100 years of research into how ice behaves under extreme conditions.

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.

Feb. 5, 2018 - Among the many discoveries on matter at high pressure that garnered him the Nobel Prize in 1946, scientist Percy Bridgman discovered five different crystalline forms of water ice, ushering in more than 100 years of research into how ice behaves under extreme conditions.

With the combination of in situ synchrotron infrared spectroscopic measurements carried out at high pressure, and ab initio calculations on the ferromagnesite structure, it was possible to identify a unique vibrational signature present only in the high - pressure phase, and thus a new carbon - oxygen bond forms in ferromagnesite under pressure.

Below the ocean may be a few hundred miles (or kilometers) of a heavier form of ice that may exist under higher pressures on above a rocky core roughly 1,800 to 2,100 miles (3,000 to 3,400 km (more from Cassini news release; Lorenz et al, Science, March 21, 2008; Richard A. Kerr, ScienceNOW Daily News, March 20, 2008; David Shiga, New Scientist, March 20, 2008; and Charles Q. Choi and Andrea Thompson, Space.com/MSNBC, March 20, 2008).

Methane clathrate, a form of water ice that contains a large amount of methane within its crystal structure, remains stable under a combination of high pressure and low temperature.

Methane hydrate forms in cold temperatures and under high pressure — conditions that can be found at the bottom of the ocean.

The authors thus suggest a third mechanism called the Haber process that could account for both the Younger Dryas and Tunguska increases, in which, under high pressure, nitrogen and hydrogen can form ammonia.

A form of frozen water - methane that is quite unstable unless kept under high pressure and low temperature.

15 Fossil Fuels: Coal Decaying plant matter, when buried under sediment, eventually forms peat (very moist, compact) Further compaction, over time, forces the moisture out of the peat — forms a layer of lignite More compression (compaction), and more moisture is removed, forming a layer of soft coal (bituminous) Higher pressure and higher temperatures cause the bituminous coal to metamorphose into hard coal (anthraciteHigher pressure and higher temperatures cause the bituminous coal to metamorphose into hard coal (anthracitehigher temperatures cause the bituminous coal to metamorphose into hard coal (anthracite) Coal

Stocks Under conditions of high pressure, high methane concentration, and low temperature, water and methane can combine to form icy solids known as methane hydrates or clathrates in ocean sediments.

So they can not understand heat transfer in our atmosphere unless they understand how real gases expand and condense and move in the fluid medium that these are under gravity, becoming lighter and heavier than air when heated or cooled forming areas of low and high pressure.

They form under very low temperatures or high pressures, or a combination of the two.

These are connected to melting of methane hydrate, an ice - like substance that forms, and is stable, under the sea floor in cold temperatures and under high pressure.

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It went something like this: hotel check - in, locate room, locate wifi service, attempt connection to wifi, wonder why the connection is taking so long, try again, locate phone, call front desk, get told «the internet is broken for a while», decide to hot - spot the mobile phone because some emails really needed to be sent, go «la la la» about the roaming costs, locate iron, wonder why iron temperature dial just spins around and around, swear as iron spews water instead of steam, find reading glasses, curse middle - aged need for reading glasses, realise iron temperature dial is indecipherably in Chinese, decide ironing front of shirt is good enough when wearing jacket, order room service lunch, start shower, realise can't read impossible small toiletry bottle labels, damply retrieve glasses from near iron and successfully avoid shampooing hair with body lotion, change (into slightly damp shirt), retrieve glasses from shower, start teleconference, eat lunch, remember to mute phone, meet colleague in lobby at 1 pm, continue teleconference, get in taxi, endure 75 stop - start minutes to a inconveniently located client, watch unread emails climb over 150, continue to ignore roaming costs, regret tuna panini lunch choice as taxi warmth, stop - start juddering, jet - lag, guilt about unread emails and traffic fumes combine in a very unpleasant way, stumble out of over-warm taxi and almost catch hypothermia while trying to locate a very small client office in a very large anonymous business park, almost hug client with relief when they appear to escort us the last 50 metres, surprisingly have very positive client meeting (i.e. didn't throw up in the meeting), almost catch hypothermia again waiting for taxi which despite having two functioning GPS devices can't locate us on a main road, understand why as within 30 seconds we are almost rendered unconscious by the in - car exhaust fumes, discover that the taxi ride back to the CBD is even slower and more juddering at peak hour (and no, that was not a carbon monoxide induced hallucination), rescheduled the second client from 5 pm to 5.30, to 6 pm and finally 6.30 pm, killed time by drafting this guest blog (possibly carbon monoxide induced), watch unread emails climb higher, exit taxi and inhale relatively fresher air from kamikaze motor scooters, enter office and grumpily work with client until 9 pm, decline client's gracious offer of expensive dinner, noting it is already midnight my time, observe client fail to correctly set office alarm and endure high decibel «warning, warning» sounds that are clearly designed to send security rushing... soon... any second now... develop new form of nausea and headache from piercing, screeching, sounds - like - a-wailing-baby-please-please-make-it-stop-alarm, note the client is relishing the extra (free) time with us and is still talking about work, admire the client's ability to focus under extreme aural pressure, decide the client may be a little too work focussed, realise that I probably am too given I have just finished work at 9 pm... but then remember the 200 unread emails in my inbox and decide I can resolve that incongruency later (in a quieter space), become sure that there are only two possibilities — there are no security staff or they are deaf — while my colleague frantically tries to call someone who knows what to do, conclude after three calls that no - one does, and then finally someone finally does and... it stops.