The Apollo space program relied on hydrogen fuel cells, which work by stripping electrons from hydrogen atoms.
The water molecules' two hydrogen atoms, which are split from oxygen by electrolysis, go in different directions.
One hydrogen atom pairs with other free hydrogen atoms to create hydrogen gas, which is also captured and sold.
Natural gas contains only one carbon and four hydrogen atoms per molecule, making it the cleanest of fossil fuels.
Their H2O turns into H (ie, hydrogen atoms) and OH (so-called hydroxyl molecules).
The now positively charged hydrogen atoms migrate through the membrane to combine with oxygen on the air side to create water.
The machines use magnets and radiowaves to excite hydrogen atoms in body tissues, creating data that computers assemble into three-dimensional images.
And it does not use hot fusion, the union of hydrogen atoms into larger elements that powers the sun and stars.
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The reaction Mr Lerner proposes would break up boron atoms by hitting them with protons (the nuclei of normal hydrogen atoms).
They used microwaves to nudge the anti-atoms, to see if they behave when nudged like mirror images of ordinary hydrogen atoms.
Natural gas is mostly methane, which has four hydrogen atoms for every carbon atom the maximum that is physically possible for a hydrocarbon.
It works by stimulating hydrogen atoms to give off a radio signal.
Any simple alcohol is composed of a number of carbon and hydrogen atoms (like a hydrocarbon such as petrol) together with a single oxygen atom.
Never mind that they showed the difference between heavy water (with deuterium atoms) and ordinary water (with hydrogen atoms) in a way that no image had done before.
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Hydrogen atoms are the smallest and lightest in the universe.
The resulting hydrogen atoms help to split hydrocarbon molecules, making them more combustible, while the oxygen released goes on to combine with the carbon, ensuring that more of it burns.
In particular, when methyl groups (made up of a carbon atom and three hydrogen atoms) are plastered on to a gene, they can stop that gene from being expressed altogether.
The reaction between hydrogen atoms to make helium has the biggest yield, but subsequent mergers all the way up to iron (number 26 on the periodic table) will release some energy.
It is produced by fusing together two hydrogen atoms.
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The nebulous field of nanotechnology, freighted with as much hype as legitimate promise, boils down to the process of manipulating matter on a molecular scale (a nanometer is one-billionth of a meter, about the width of ten hydrogen atoms).
The CMB is the light that was finally allowed to spread out across space once the Universe had cooled sufficiently to permit the formation of hydrogen atoms - about 380, 000 years into the life of the cosmos.
The carbon combines with the hydrogen in water to make carbon monoxide and hydrogen gas--the old "town gas"--but then the catalyst prompts a rejiggering of the atoms into methane (one carbon atom attached to four hydrogen atoms).
Even though helium atoms are four times chunkier than hydrogen atoms, they are still small enough to find all the weak spots as they worm their way through the crystalline structure of solid steel several centimetres thick.
Starting with two silicon wafers, Soitec machines coat the surface of one with silicon dioxide insulator and embed inside it a thin fault line of hydrogen atoms anywhere from 100 to 20, 000 nanometers below the surface, depending on customers' desired wafer thickness.
His speciality for a long time, before he had developed the technology he needed, was fuzziness or rather, that interesting gradation of shading, pinpointed by hydrogen atoms, that showed where the water content of the cells was changing, and tissues were becoming diseased.
Meanwhile, research into fusion power (in which energy is generated by fusing hydrogen atoms together at very high temperatures) has left behind a different kind of debris: a trail of experimental reactors, none of which has yet reached the break-even point where the amount of energy that comes out exceeds the amount put in.
Like alcohols, fatty acids are molecules that have lots of hydrogen and carbon atoms, and a small amount of oxygen (in their case two oxygen atoms, rather than one).
Instead of using biological tools like enzymes and yeast to transform sugars, the company uses chemistry. (For a quick primer on biofuel technologies, click here.) Catalysts remove the oxygen from the sugars and rearrange the hydrogen and carbon atoms into fuel.
How did two atoms of hydrogen wind up welded to a single atom of oxygen?
As the ages passed, the pressure of layers above and heat from inside the earth broke down and reassembled these simple plants and animals into chains of carbon atoms bristling with hydrogen.
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