This can be done by heating the gas (a thermal plasma) or passing an electric current through it (a non-thermal plasma).
Have the skies truly cleared for American Airlines, or is the company merely passing through the eye of the storm?
However, we can look at conditions off in the distance and surmise whether what was just experienced was an isolated financial cold front passing through, or ongoing problems that have us in the eye of a storm.
Many of them come on cruise ships, often passing through Chile or Argentina first, but there are also more than a dozen research stations on the continent, the largest being the McMurdo Station in the south, which can support more than a thousand people.
"Before this no one knew if the basking sharks that visited Manx waters in summer were the same sharks coming back year after year or just sharks that were passing through on global travels - thanks to this MBSW research a picture is starting to emerge, " Mrs Hall added.
BBC: Lottery boost for Manx basking shark 'passport' tagging
In theory, that gave the state the means to decode traffic passing through the Internet or between branches of the same business.
It also does not cover telephone conversations passing through international lines or telephone metering, increasingly used by police to secure telephone records of the numbers dialled by suspects.
Previously, travellers from these countries could pay the fee using cash or credit card at the airport when passing through immigration.
Callers to the 0845 number speak first to a call handler who will ask the reason for calling before passing the query through to either a nurse or other relevant health adviser.
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To use that excess electricity (obviously, only excess when the wind is blowing just right, or the Sun shining) to electrolyse water by passing it through a fuel cell and then store the resultant hydrogen.
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But with future telescopes, scientists say it may be possible to see past the blinding glare of the parent star to pick out just the faint light passing through a small world's atmosphere or even reflected off its surface.
BBC: Kepler telescope spies 'most Earth-like' worlds to date
Those attending the swearing-in ceremony or entering the parade route will undergo tight screening, including passing through magnetometers.
CNN: Authorities mount record security effort to ensure inaugural safety
If you've ever heard passing remarks about Area 51 or Groom Lake -- especially through entertainment media such as television's "The X Files" or the movie "Independence Day" in which Area 51 was prominently featured -- and it piqued your curiosity, this is the place to be.
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