What Is the Coolest Gas in the Universe?
What is the coldest air temperature ever recorded on the Earth? Where was this low temperature recorded? The coldest recorded temperature on Earth was -91℃,which in Antarctica in1983.
We encounter an interesting situation when we discuss temperatures in .Temperatures in Earth orbit actually range from about +120℃ to -120℃.The temperature depends upon you are in direct sunlight or shade.Obviously,-120℃ is colder than our body can safely endure.Thank NASA science for well-designed space that protect astronauts from these temperature extremes.
The space temperatures just discussed affect only our area of the solar .Obviously, it is hotter closer to the Sun and colder as we travel away from the Sun.Astronomers estimate temperatures at Pluto are about -210℃.How cold is the lowest estimated temperature in the entire universe? Again,it depends upon your .We are taught it is supposedly to have a temperature below absolute zero,which is -273℃, at which atoms do not move.Two scientists,whose names are Comell and Wieman,have successfully cooled down a gas to a temperature barely absolute zero.They won a Nobel Prize in Physics in 2001 for their work not a discovery,in this case.
Why is the two scientists work so important to science?
In the 1920s,Satyendra Nath Bose was studying an interesting about special light particles we now call photons.Bose had trouble other scientists to believe his theory, he contacted Albert Einstein.Einsteins calculations helped him theorize that atoms behave as Bose thought but only at very cold temperatures.
Scientists have also discovered that atoms can help them make the worlds atomic clocks even more accurate.These clocks are so accurate today they would only lose one second six million years! Such accuracy will help us travel in space because distance is velocity times time.Withthe long distances involved in space , we need to know time as accurately as possible to get accurate distance.
51.A.opened B.occurred C.opposed D.operated
52.A.Earth B.space C.planet D.star
53.A.whether B.where C.what D.when
54.A.foods B.beds C.tools D.suits
55.A.wind B.energy C.system D.rays
56.A.education B.status C.knowledge D.location
57.A.reasonable B.wonderful C.impossible D.necessary
58.A.above B.below C.within D.beyond
59.A.invention B.theory C.paper D.experiment
60.A.convincing B.begging C.ordering D.forcing
61.A.and B.though C.but D.so
62.A.will B.would C.must D.can
63.A.ultra-small B.ultra-fast C.ultra-hot D.ultra-cold
64.A.any B.each C.every D.some
65.A.travel B.research C.walk D.station
答案:BBADC DCABA DBDCA
女王的家臣突然召开紧急会议,要驾崩了吗?
2017年6月英语四级作文模板:图表图画型范文
国际英语资讯:At least 31 dead in school bus crash in Tanzania
淘气的表妹 My Naughty Cousin
国内英语资讯:China to enhance cooperation with Kyrgyzstan under Belt and Road initiative
那些有关爱情的习语(一)
美文赏析:一颗坚强的心,是生活中最重要的
国内英语资讯:China Focus: Chinas homegrown jumbo passenger jet takes to the sky
国际英语资讯:Iran launches Mideast biggest energy exhibition
国际英语资讯:Hamas elects Haniya as new chief of Islamic movement
英语四级作文范文:人工智能
马云联合国总部发言 互联网应为全世界所用
直男们对女人化妆的看法
英语六级作文范文:出国留学
哪些大脑秘密,只有神经学家懂
如果一夜暴富,该如何处理这些钱?
体坛英语资讯:Messi, Suarez and Neymar all score as Barca win 4-1 at home to Villarreal
国内英语资讯:Xinhua editor-in-chief meets Philippine presidential communications secretary
体坛英语资讯:Chinas winter sports industry ushers in golden age
体坛英语资讯:FIFA lifts Lionel Messi international ban
体坛英语资讯:Zambia to host first Africa Cup tournament for Chinese kung fu
国际英语资讯:Indian Supreme Court confirms death sentence of 4 convicts in Delhi gangrape case
国内英语资讯:(BRF) China publishes book about the Belt and Road Initiative in 14 languages
BBC推荐:五月必读书单[1]
伊万卡写了本女权主义的书,结果被女人狂喷
完美的世界 The Wonderful World
2017年6月英语四级作文模板:应用写作型范文
国际英语资讯:Former Brazilian president involved in corruption scheme: former Petrobras executive
国际英语资讯:French voters brace for decisive round of presidential election
英语四级作文范文:大学生兼职