Sentences with phrase «than the hydrogen gas»

Another possible explanation for the strong radio signal Bowman and the EDGES team discovered is that there's more radio background radiation being absorbed, rather than the hydrogen gas being colder than previously thought.

Not exact matches

On the other hand, of the earth were slightly larger, gravity would be stronger and then the light gas of hydrogen (much lighter than air) would not disperse into space at its now prescribed rate, eventually resulting in the earth being unable to sustain life.

Disks cool down more efficiently if their gas includes some molecular hydrogen — two hydrogen atoms bonded together — rather than atomic hydrogen, which consists of only one atom.

Extracting CO2 from traditional coal plants is much less efficient than from gasification plants, where coal is first turned to a gas and reacted with water to form CO2 and hydrogen.

Metals (elements heavier than hydrogen and helium) are created in the interiors of stars as they evolve and then released into surrounding gas through supernova explosions or stellar winds (often referred to as chemical evolution).

Fuel cells are far greener than gas - powered engines because they produce electricity without burning up the hydrogen (or other fuel) that powers them.

Natural gas blended with renewable hydrogen also produces less emissions than regular natural gas when used at a power plant or as a transport fuel.

On a life - cycle basis, FCVs running on hydrogen derived from steam - reforming natural gas — currently the most affordable way of making hydrogen — produce less than half the greenhouse gas emissions of a gasoline - powered car.

The University of California, Davis, estimates that the cost per gram of hydrogen produced from the electrolysis of water will remain more expensive than hydrogen produced from natural gas with carbon capture and sequestration well through the end of the decade.

First, engineers reduce the volume of the gas by cooling it to the temperature of liquid nitrogen (196 degrees C), which is easier to attain than liquid - hydrogen temperatures.

An international team of scientists has pushed the limits of radio astronomy to detect a faint signal emitted by hydrogen gas in a galaxy more than five billion light years away — almost double the previous record.

Located 750 light years away in the constellation of Pisces, SDSS J0104 +1535 is made of gas that is around 250 times purer than the Sun, so consists of more than 99.99 % hydrogen and helium.

«More California gas stations can provide hydrogen than previously thought.»

«Not only did we detect radio signals emitted by distant galaxies when the Universe was three billion years younger, but their gas reservoirs turned out to be unexpectedly large, about 10 times larger than the mass of hydrogen in our Milky Way.

Worms that made more hydrogen sulfide lived longer, on average, than those that made the normal amount of the gas.

There, the sulfur dioxide rapidly combined with readily available hydroxide gas — which, in liquid form, is commonly known as hydrogen peroxide — to form more than 100 million tons of sulfuric acid.

If clouds of hydrogen also cluster around quasars — which convert all nearby neutral hydrogen to invisible ionized gas — then quasars must have ionized more hydrogen than astronomers had assumed, Savaglio says.

In place of turbochargers and high - octane gas, the scientists tweaked their engine design and used an additive to speed the oxidation of hydrogen peroxide into fuel to create nanomachines 350 times more powerful than any previously built.

But combining the hydrogen with CO2 to produce methane is a safer option than using hydrogen directly as an energy source and allows the use of existing natural gas infrastructure.

In only two weeks of driving, the district coordinator of science for the Port Chester, N.Y., public school system has driven at least 600 miles (965 kilometers) on the car and her fuel cell Equinox has gotten as much as 191 miles (307 kilometers) on its three full tanks (each holding slightly more than four kilograms, or 8.8 pounds, of compressed hydrogen gas).

Achieving fusion — nuclear reactions that have the potential to produce copious, clean energy — requires heating hydrogen fuel to more than 100 million degrees Celsius, causing it to become an ionized gas or plasma.

To avoid that problem, McGaugh gathered data from various sources on 47 galaxies that contain more hydrogen gas than stars.

Because hydrogen fluoride molecules break down at high temperatures, the spectra of warmer stars show less of the gas than those of cooler ones do — even if the warmer stars contain just as much fluorine.

Depleted oil and gas reservoirs and aquifers could leak hydrogen, and cycling — filling a storage site, pulling hydrogen out for use and refilling the site — can't be done more than once or twice a year to preserve the integrity of the rock formation, Lord said.

They concluded that we'd lower greenhouse gas emissions more by driving gasoline / electric hybrid cars than by driving fuel cell cars run on hydrogen from coal.

In addition, they found that the width of the hydrogen line, which is emitted from cooler gas (with a temperature of about 10,000 K), is broader than the helium line.

Since life originated on the earth in a span much shorter than the present age of the earth, we have additional evidence that the origin of life has a high probability, at least on planets with an abundant supply of hydrogen - rich gases, liquid water and sources of energy.

Moreover, the production of hydrogen gas creates a layer that separates the sodium and the water, which should further slow the reaction, resulting in slow bubbling rather than a kaboom.

Hydrogen can also be split from water in high - temperature nuclear reactors or generated from fossil fuels such as coal or natural gas, with the resulting carbon dioxide captured and sequestered rather than released into the atmosphere.

Due to methane gas, as a primary energy source, having a noticeably lower cost than electricity, hydrogen could be a cheaper fuel for vehicles than electricity.

This could mean that the system formed from interstellar gas clouds that were richer in hydrogen and helium than the ones typically found in our Galaxy, and that were poorer in heavy elements — which astronomers call metals.

Consequently, massive amounts of reactive gases such as oxygen, hydrogen, and methane are continually being added to Earth's now «anomalous» atmosphere faster than they would otherwise be removed by inorganic chemical processes.

Dwarf galaxies are sometimes embedded in a smoothly rotating disk of hydrogen gas that is much larger than the galaxy itself.

The team went back to the drawing board and eventually realized that the 100 - MHz estimate was based on the assumption that the hydrogen gas was hotter than everything else around it.

This must happen very quickly, before the gas dissipates.e (Jupiter's hydrogen and helium are 300 times more massive than the entire Earth.)

It also can trigger the release of dangerous chemicals such as nitrous oxide, a greenhouse gas up to 300 times more powerful than carbon dioxide, and toxic hydrogen sulfide.

They are much larger than gas giant planets but fall just short of being large enough to trigger hydrogen fusion.

H. Bond (STSci), R. Ciardullo (PSU), WFPC2, HST, NASA HD 147513 B is a young white dwarf (a remnant stellar core which enriched its binary companion, Star A) with elements heavier than hydrogen when it cast off its outer gas layers) like planetary nebula NGC 2440.

Given the low abundance of elements heavier than hydrogen, moreover, it is possible that the star is more likely to have gas giants in cold outer orbits.

Thus, more than 35 years after it was predicted, J1030 was finally found in the early period of the universe where neutral hydrogen gas still existed in quantities sufficient to be detected.

In doing so, as the CMB photons traveled through this hydrogen gas, it absorbed a particular frequency — so rather than look for a specific emission, astronomers have been looking for a specific type of absorption, or a certain frequency of CMB radiation that was missing.

Situated in the constellation of Pisces, SDSS J0104 1535 is made from gas that is around 250 times purer than the Sun, greater than 99.99 % hydrogen and helium.

While larger planets could have sufficient gravity to attract a massive hydrogen - helium atmosphere, smaller planets — like Mars or Mercury that have less than half the Earth's mass — located in or near their star's habitable zone may lose their initial life - supporting atmosphere because of low gravity and / or the lack of plate tectonics needed to recycle heat - retaining carbon dioxide gas back into the atmosphere (Kasting et al, 1993).

Based on observations of the previous storms decades ago it was suspected that the storms may dredge up gas that is of different composition than the molecular hydrogen that dominates Saturn's upper atmosphere.

The composition of a star is typically broken up into three main categories: The fraction of a star composed of hydrogen gas, the fraction composed of helium gas, and the fraction composed of any element heavier than helium (also in gas form).

The risk of explosion is lower than in older battery designs due to less venting of hydrogen gas in current designs.

For hydrogen gas, the LEL is 4 % and the UEL is more than 75 %, meaning that if the concentration of hydrogen gas reaches 4 %, it is at the level that could ignite with a spark.

Hydrogen gas is released when the battery is charging due to a process called electrolysis in which water decomposes into its constituent hydrogen (H) and oxygen (O) in the presence of a voltage that is greater than the decomposition voltage equiHydrogen gas is released when the battery is charging due to a process called electrolysis in which water decomposes into its constituent hydrogen (H) and oxygen (O) in the presence of a voltage that is greater than the decomposition voltage equihydrogen (H) and oxygen (O) in the presence of a voltage that is greater than the decomposition voltage equilibrium.

Because it's lighter than air, any hydrogen gas released from the battery will tend to rise.

A study of greenhouse gas - emissions by the Advanced Power and Energy Program at the University of California at Irvine shows fuel - cell vehicles running on hydrogen derived from natural gas ultimately create far less GHG emissions than BEVs running off the U.S. grid, which is powered mostly by coal and natural gas.