Hydrogen has a high energy density and is clean - burning to leave only water vapour.
You wish that you might become a vapour, and leak away through the lift walls.
As the air rises, it expands and cools, and water vapour condenses, releasing even more heat.
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This vapour condenses into a trail of droplets as a charged particle zooms through it.
CdTe, like the First Solar technology, is vapour deposited onto the glass panels to make the actual cells.
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Anyone standing outside during a run gets very wet because the vapour rains straight back down to the ground.
This followed a deep-cleaning process known as "fogging", which uses hydrogen peroxide vapour.
Using a thin film of polyfluorene, a light-emitting plastic, they have created a laser which reacts with explosive vapour.
The laser light dims within seconds when the plastic comes into contact with even the tiniest emission of vapour.
Such particles act as nuclei for the condensation of water vapour into the droplets of which clouds are composed.
TOS-1, is a rocket that delivers a cloud of exploding fuel vapour, creating an effect like a small nuclear weapon.
The scientists said the device could work like "an artificial nose for a robot dog", sniffing out extremely low concentrations of vapour.
They fill the container with pure air made by evaporating liquid nitrogen and liquid oxygen, and add water vapour and some trace gases.
When water velocity is high, the pressure within the liquid drops to below the vapour pressure of water, allowing tiny air bubbles to expand.
Static electricity could cause a small spark when a petrol pump nozzle is inserted which could in turn ignite fuel vapour in a flash fire.
The idea is to test the effects on the atmospheric window of various pollutants, and also of water vapour, by releasing them into the building.
Fuel cells which produce electricity from the combination of hydrogen and oxygen, would supplement other energy sources and release only water vapour into the environment.
The team hopes the laser could be built into a remote-controlled robotic device which could be despatched into a mine field, looking for vapour clouds.
Without such particles, clouds would be rare: the air would need to be freakishly saturated with water vapour or strangely cold for condensation to occur.
These are boxes containing air that is super-saturated with water vapour.
Shah said he continues to see modest improvement in 2013 in the market for metalorganic chemical vapour deposition equipment, which is used to manufacture LED lighting.
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The liquid had re-condensed on the tools because of a new type of semi-permeable wrap put around the trays that did not allow the vapour to escape.
One depends on the idea that the water vapour which forms clouds condenses initially around tiny particles known as aerosols (many of which are produced by algae).
Just a fortnight ago, astronomers using the Hubble space telescope identified water vapour in the atmosphere of an exoplanet, albeit a gaseous exoplanet some 150 light years away.
Venus's weather system involves sulphur, carbon monoxide and water vapour.
The consequent condensation of the water vapour it is carrying heats the air further (the change of state from gas to liquid sheds latent heat), causing it to continue rising.
During the accumulation season, sublimation is reduced because of a low gradient of vapour pressure and the energy supplied by radiation is directly consumed by melting, explaining why discharge is high.
At key points, components will go through further careful cleaning with ethanol and a thorough sterilisation with hydrogen peroxide vapour which, to add to the challenges, has to kept above 15C.
Much of it resulted from volcanoes blasting out gases like carbon dioxide and water vapour, which allowed ice (also a mineral) to form near the poles of Earth, and possibly on Mars too.
These data will provide invaluable information about Antarctic atmospheric dynamics, of the origin of water vapour over the oceans and how it is ultimately deposited as snow on the surface of the ice sheet.
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