Sentences with phrase «than hydrogen when»

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.

Not exact matches

A compound of hydrogen and sulfur, when crushed at more than a million times Earth's standard atmospheric pressure, appears to whisk electrical current along without resistance at temperatures up to 203 kelvins.

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.

When the researchers switched the electric current off by deoxygenating the water, thereby removing the electron acceptor at the sediment surface, the depth of the hydrogen sulfide layer in the sediment rose in less than an hour, as deeper microbes could no longer consume it.

«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.

That whiff of hydrogen, which apparently lasted no more than 7 hours, burst forth when Europa was farthest from Jupiter in its orbit, the researchers report today in San Francisco at the fall meeting of the American Geophysical Union and online in Science.

That is 4 per cent smaller than when using ordinary hydrogen, a discrepancy quantum physics can not explain.

When the scientists tracked the pattern of emissions of a particular hydrogen molecule consisting of three hydrogen atoms (rather than the usual two), they expected to see a uniform planet - wide infrared glow.

When the sun first came into being, this wind was far stronger than it is today — strong enough to blast lighter elements such as hydrogen and helium away from the inner orbits.

When a star less than eight times the mass of our Sun runs out of the supply of hydrogen fueling the thermonuclear reaction raging in its stellar core, it may transform into a red giant instead of ending its life in a dramatic supernova explosion.

Specifically, Wadsworth and Cockell explained, adding iron oxide and hydrogen peroxide to the perchlorates caused bacteria to be killed more than 10 times faster than they were when only the perchlorates were present, according to Engadget.

When asked about hydrogen as a practical fuel, Bereisa told us, «There's a lot more hydrogen production around than people think, so if the country wanted to move to a hydrogen economy, it could get done pretty quickly and with a lot less investment than we're already seeing in the current stimulus package.»

Hydrogen - powered fuel - cell development programs fell off the automotive radar screen when the global economy faltered in 2008 and automakers focused on immediate survival rather than future products.

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.

Los Angeles, Nov. 27 — Ford Motor Company will raise the bar in the hydrogen fuel cell race today at the 2006 Los Angeles Auto Show when it unveils an all - new fuel cell powered Explorer that can travel 350 miles on a single fill - up, more than any fuel cell vehicle on the road.

The effect is in the ballpark of 5 %, since the sun is 30 % brighter than when it formed 4.5 billion years ago and the brightening trend accelerates as a star ages (A little educated guessing here, but the rate of fusion increases in proportion to the star's luminosity and the pressure needed in the core is an inverse relationship to the hydrogen concentration in the core — simple linear interpolation would give a 3.3 % increase in luminosity).

When water is formed from hydrogen and oxygen, the weight is a little bit less than would be expected.

As with petroleum, some energy is required to separate the molecule into separate atoms, but the energy is more than returned when the carbon and hydrogen burn to form carbon dioxide and water vapor respectively.

When dipped into a beaker of water, instead of producing electricity, the leaf harnessed the electrons to break the chemical bonds of water and release hydrogen gas — a fuel that can store energy at a significantly higher density and lower cost than electricity.

A solar flare is what happens when magnetic energy built up in the sun's atmosphere suddenly releases, giving off more energy than a hydrogen bomb (times 10).

Furthermore, when accurate main - sequence mass - loss rates are used to calculate the evolutionary tracks, the predicted surface hydrogen and nitrogen abundances of the blue remnants agree much better with observations of the brightest LBVs than before.

Back in 2010, when it emerged out of stealth mode, GridShift said it could produce hydrogen at a cost of $ 2.51 per kilogram, «effectively making hydrogen a more affordable alternative than gasoline at an equivalent cost of $ 2.70 per gallon of gasoline.»

[Response: When methane is combusted, or if it reacts with oxygen in the atmosphere (a very slow type of combustion) the hydrogen in it produces water vapor, rather than hydrogen.

Hydrogen is a gas that when burned produces more energy per kilogram than any fossil fuel, and all that is released into the atmosphere is steam.