Definitions for H II region
h ii region

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1. H II regionnoun

   A large nebula of gas and plasma of glowing low density in which star formation has recently taken place.

WikipediaRate this definition:0.0 / 0 votes

1. H II region

   An H II region or HII region is a region of interstellar atomic hydrogen that is ionized. It is typically in a molecular cloud of partially ionized gas in which star formation has recently taken place, with a size ranging from one to hundreds of light years, and density from a few to about a million particles per cubic centimetre. The Orion Nebula, now known to be an H II region, was observed in 1610 by Nicolas-Claude Fabri de Peiresc by telescope, the first such object discovered. The regions may be of any shape because the distribution of the stars and gas inside them is irregular. The short-lived blue stars created in these regions emit copious amounts of ultraviolet light that ionize the surrounding gas. H II regions—sometimes several hundred light-years across—are often associated with giant molecular clouds. They often appear clumpy and filamentary, sometimes showing intricate shapes such as the Horsehead Nebula. H II regions may give birth to thousands of stars over a period of several million years. In the end, supernova explosions and strong stellar winds from the most massive stars in the resulting star cluster disperse the gases of the H II region, leaving a cluster of stars which have formed. H II regions can be observed at considerable distances in the universe, and the study of extragalactic H II regions is important in determining the distances and chemical composition of galaxies. Spiral and irregular galaxies contain many H II regions, while elliptical galaxies are almost devoid of them. In spiral galaxies, including our Milky Way, H II regions are concentrated in the spiral arms, while in irregular galaxies they are distributed chaotically. Some galaxies contain huge H II regions, which may contain tens of thousands of stars. Examples include the 30 Doradus region in the Large Magellanic Cloud and NGC 604 in the Triangulum Galaxy.

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1. H II region

   An H II region is a large, low-density cloud of partially ionized gas in which star formation has recently taken place. The short-lived, blue stars forged in these regions emit copious amounts of ultraviolet light, that ionize the surrounding gas. H II regions—sometimes several hundred light-years across—are often associated with giant molecular clouds. The first known H II region was the Orion Nebula, which was discovered in 1610 by Nicolas-Claude Fabri de Peiresc. H II regions are named for the large amount of ionised atomic hydrogen they contain, referred to as H II, pronounced H-two by astronomers. Such regions have extremely diverse shapes, because the distribution of the stars and gas inside them is irregular. They often appear clumpy and filamentary, sometimes showing bizarre shapes such as the Horsehead Nebula. H II regions may give birth to thousands of stars over a period of several million years. In the end, supernova explosions and strong stellar winds from the most massive stars in the resulting star cluster will disperse the gases of the H II region, leaving behind a cluster of birthed stars such as the Pleiades.

How to pronounce H II region?

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How to say H II region in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of H II region in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of H II region in Pythagorean Numerology is: 4

Examples of H II region in a Sentence

1. Congressman Matt Salmon:

   It's kind of strange because every other embassy in the region has reached out to me, and their ambassadors have asked for an audience with me, every one of them except for China.

2. Randy Forbes:

   The passage of U.S. vessels within 12 nautical miles of China’s man-made features in the South China Sea is a necessary and overdue response to China’s destabilizing behavior in the region.

3. Gavin Styles:

   At a time when our region and country is facing an unprecedented economic crisis, this decision effectively hands the much-needed and valued jobs of our North East workforce to Russian miners.

4. Congressman John Lewis of Georgia:

   I believe - Itruly believe - the time to begin impeachment proceedings against this president has come, todelay or to do otherwise will betray the foundation of our democracy. CLICK HERE TO GET THE OPINION NEWSLETTER Are you confused yet ? If so, we dont blame you. If you left town for the week, you may be wondering what the hell is going on exactly. Impeachment ? For years, they told you that Donald Trump was going to be impeached for colluding with Russia, spying for Putin. Then it turned out Donald Trump didnt do that. The story evaporated into dust and seemed to blow away. Then just a few days ago, they were grumbling about impeachment again, and they dragged in Corey Lewandowski. Remember Corey Lewandowski ? They brought Corey Lewandowski to Capitol Hill to make their case. That didnt go well at all. Rep. Nadler You, D-N.Y., House Judiciary Committee chairman : And so we ask you, is it correct that as reported in the Mueller report on June 19th, 2017, you met alone in the Oval Office with the president ? Corey Lewandowski, former Donald Trump campaign manager : Did you read the exact language of the report ? I dont have it available to me. Nadler You : I dont think I need to do that. I have limited time. Did you meet alone with the President on that date ? Lewandowski : Congressman, Id like you to refresh my memory by providing a copy of the report so I can follow along. Nadler You : You dont have a copy with you ? Lewandowski I dont have a copy of the report, congressman. Nadler You dont have any independent recollection of whether you met with the President on that date. Lewandowski : Congressman, Im just trying to find in the Mueller report where it states that. Nadler You : Well, you have it in front of you. I gave you the page number. Corey Lewandowski : We are on Page 90, is it, sir ? Unidentified male : Mr. Chairman, youve got to the clock. Nadler You : No, I dont have to start the clock. Nadler You is filibustering. It didnt take much for Chairman Nadler to collapse live on C - SPAN -- pretty embarrassing. Youd think at some point, Democrats might just decide to run a real presidential campaign in 2020 and beat Donald Trump that way, just like in a democracy. It would have to be more effective than what theyre doing now, and the numbers show it. As of this morning, Donald Trump Trumps approval rating was the highest it has been since the inauguration. But no, Democrat dont want to wait until the next election. They dont want to wait until November. Politics takes too long, and it leaves too much to chance. The risk of democracy is voters might not agree with you. Hillary Clinton learned that the hard way in 2016. And the one thing Democrats dont want to do is to repeat that. Better to remove your opponents by force, if you can. Which brings us to the latest question of impeachment : What exactly is this about ? Sorry to laugh in the middle of this -- weve spent all day trying to figure out what is the impeachment story. Its about Ukraine. Its less than a week old. And so you might be forgiven for not understanding why would the president be impeached for a story that the Democrats literally cant explain ? What did the president do wrong ? Were going to do our best to tell you the case that theyre making. And honestly, as we said, its confusing and not all that interesting. Within a sentence, here is what theyre saying. Theyre saying that in a phone call with the president of Ukraine, Donald Trump threatened to delay a $ 400 million military aid package to Ukraine, unless the Ukrainian government agreed to investigate possible criminal activity involving Joe Bidens son. Why Joe Bidens son ? Well for five years, Joe Bidens son, Joe Bidens, it turns out, was paid hundreds of thousands of dollars per year to serve on the board of a Ukrainian gas company. Why would Joe Bidens son be on the board of a Ukrainian gas company ? Joe Bidens had no experience in the energy business. Joe Bidens didnt speak the relevant language. Joe Bidens apparently had no experience whatsoever in the region. It turns out at that very moment, Joe Biden was President Obamas point man for Ukraine. Oh. So at a certain point during this saga, the gas company in question was investigated. And then in 2016, the Ukrainian prosecutor overseeing that investigation was fired. Apparently, he was fired under pressure from Joe Biden. Now to the layman, that looks a lot like corruption. What does it have to do with the president being impeached ? Well, the accusation is that Donald Trump suggested that that squelched investigation deserved a second look. And Democrats say that suggestion was an impeachable offense. Are you following this ? Of course, there are plenty of other reasons that the U.S. might not want to send $ 400 million to Ukraine. Its a notoriously corrupt country, for one thing. What do we get out of it, is another. And by the way, sending military aid to Ukraine may please the neocons in CNN -- Bill Kristol was strongly for it -- but it also greatly increases the chances of conflict with Russia. And of course, that would mean nuclear conflict potentially. Whats the point of that, exactly ? Nobody has bothered to explain why sending $ 400 million in military aid to Ukraine is in the interest of the United States. They havent even thought to explain that. Theyre too busy yelling about impeachment. And theyre doing it with all the hysterical intensity that has become the hallmark of the modern left. They have a lot of energy. Too bad, none of it is focused on the countrys real problems, and there are a lot of them. We dont want to go through the same litany again, but we will hit on just a couple because theyre worth mentioning. Our national debt is exploding. And that includes credit card debt, by the way. Personal debt at Donald Trumps approval rating ever measured. We have a war in Afghanistan that we cant seem to win or end. Our towns outside the big cities are being decimated and desiccated by opioids and suicide. If you havent been there, drive through and take a look for yourself. We have basically an open border with Mexico. Tech companies trying to control our freedom of speech. CLICK HERE TO GET THE FOX NEWS APP In many ways, our country is on the wrong track, and people know it. Everybody knows it, Democrats and Republicans. But instead of trying to fix any of that, Democrats want to spend the next year explaining -- and they plan to -- why it was perfectly fair for Joe Bidens neer-do-well sonto get 600 grand a year from Ukrainian oligarchs. Thats totally fine. But its somehow criminal for Donald Trump to ask about that. Thats the message. Good luck with that. Hard to imagine many voters will be impressed by it. Adapted from Tucker Carlsons monologue from.

5. Abdul Khaleq Abdulla:

   Having refugees also feeds into ISIS' appeal, and it feeds into the violence in the region, which is already the most violent region on Earth. So all in all, anything that goes in the neighborhood impacts the security and the stability of the Arab Gulf states who are by far the most stable and the most secure.

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/H_Ii_Region
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/H_Ii_Region
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=H II region