سٌ͋ҹ·ҹٌ͡Nj .. 2538 ͧúͺ 100
ˋä (Helium) ҾᡍʷҡNjҡء ઋ ਹ
ѧѡдɰʹյ ֧㪌èٹ ١⻆ ѹ NASA 㪌
س -269 ͧŋ§ˌਹ ͡ਹҾͧ
㪌ԧǴ ѡԷʵÏ㪌һԡóҳ óǨ
Ëҧ (MRI) óѡҹҨ֧㪌Ѻ͡ਹ
֧Njҵًҧشóҡ ѹѺͧѡ
ͧҡਹ Դ 10% ͧ ˹ѡ ᵋ䴌з 150 ͧ
˵ઋҵ еÌ÷ һԡҡѺ
֧ˌСͺ ͧСͺչҡš ʋǹ˵աС˹
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䴌ѺõNjҵ Nj ͡š
ѹš N. Lockyer ؤá䴌ѹ 20 Ҥ 2411 㪌Ō
÷ȹʋͧٴǧҷԵ Ōˏʧ輋ҹ ʌ (spectrum)
ͧʌ˹ᶺʧ ҡ СNj 䴌ҵ
ǧҷԵ ŻҡNjзա 27 William Ramsey ѡ
ʡ͵ Ǩͺᡍʷ clevite
Ŵņ͡䴌ʌͧʧ ѡɳǡѺ Lockyer ֧䴌ôԵ
Njٌ Helium ҹ ä neon, krypton, xenon ˌ Ramsey 䴌
ѺҧҢ㹻 .. 2447
ҵسѵšҴ ઋ ҡҷ ˌѹسԵ ҡNj -271 ͧ
ѹ ҾͧǴ (superfluid) ö ҹ ҹǵҧ
§䴌 ç´ҹ ͵ҹ ѹѹ NjسŴŧ ѡ§
áѺͧ
ɮաԴͧѡ Big Bang ҡ ˵óѡ͡ Դ 15,000 Ō
ŌNj 3 ҷ ѧ