There was a sudden silence; Case felt it fill his helmet like some rare gas.

He also studied the effects of rare gases such as helium on animal life.

Anyway, this seems to be the first time a compound was made which chemically incorporated a rare gas element.

Scientists proclaimed the comet's nucleus far less dense than our rarest gas.

William Crookes investigated the effects of energy discharges on rare gases.

He showed that shock waves propagate only towards rarer gas layers.

"They require special alloys as well as rare gases.

These react with rare gases to create blazing, coloured cascades of plasma particles.

A.Many rare gases do not form compounds, but are distributed in the air in tiny amounts.

It turned out that a rare gas that she had studied in graduate school was responsible, and the problem was cleared up.

Nitrogen, oxygen, some CO2, a little water vapor, and traces of the old familiar rare gases.

The primary ion beam is a 1-5keV rare gas ion source, which has a narrow energy spread.

Xenon is a rare gas with certain properties that make it especially suited for use in projectors:

The theory of quantum mechanics can be implemented on a computer, and solved pretty accurately for most of the rare gas elements.

These days we use an abbreviated version of the notation above called the "rare gas core" notation.

They were orbiting a rare gas giant, similar to Saturn and Jupiter in Earth's solar system.

Q.I can understand how to collect hydrogen and oxygen by electrolyzing water, but how are rare gases obtained?

The switch itself is a glass envelope filled with rare gases and containing two contacts, at least one of which is a bimetallic strip.

When the mains voltage is turned on, a glow discharge in the rare gases heats the bimetallic strip.

I think they are called rare gases because when they were discovered, they were thought to be very rare.

He coined the expression "dispersion effect" for the attraction between two rare gas atoms at large (say about 1 nanometer) distance from each other.

Neon was the second of these three rare gases to be discovered, and was immediately recognized as a new element from its bright red emission spectrum.

An electrical discharge across the electrodes causes the rare gases sealed in the cell to be converted to plasma form as it ionizes.

Being a rare gas, it usually migrates freely through faults and fragmented soils, and may accumulate in caves or water.

By the early 1980s, Scoles began the first studies of the spectroscopy of molecules adsorbed in or on clusters of rare gas atoms.