{"id":2989,"date":"2022-09-21T17:21:29","date_gmt":"2022-09-21T08:21:29","guid":{"rendered":"https:\/\/agus.co.jp\/en\/?p=2989"},"modified":"2022-11-25T10:35:45","modified_gmt":"2022-11-25T01:35:45","slug":"is-the-space-really-a-vacuum-this-time-let-us-talk-about-it-more-clearly","status":"publish","type":"post","link":"https:\/\/agus.co.jp\/en\/?p=2989","title":{"rendered":"Is the space really a vacuum? This time let us talk about it more clearly."},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/agus.co.jp\/wp-content\/uploads\/2019\/10\/%E5%AE%87%E5%AE%99%E3%81%AF%E7%9C%9F%E7%A9%BA%EF%BC%9F.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>Is it true that the space is said to be a vacuum?<\/p>\n\n\n\n<p>The answer is both yes and no.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Strictly speaking, space is not a vacuum because there are a few molecules floating around.<\/p>\n\n\n\n<p>However, it can also be a vacuum in industrial terms since it is defined as a pressure of 1 atm or less.<\/p>\n\n\n\n<p><a href=\"https:\/\/agus.co.jp\/en\/?p=2827\">Click here for the explanation of vacuum.<\/a><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>We explain clearly the reason why space is not a vacuum.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>First, space has a temperature.<\/strong><\/p>\n\n\n\n<p>On the earth where we live, we are dealing with temperature on a daily basis.<\/p>\n\n\n\n<p>That&#8217;s because of the atmosphere that surrounds the Earth.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>On the other hand, space has no atmosphere and is said to be at absolute zero.<\/p>\n\n\n\n<p>Is it true?<\/p>\n\n\n\n<p>The temperature in space is about -270\u00b0C.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>The official record for the lowest temperature in Japan is -41.0\u00b0C in Asahikawa.<\/p>\n\n\n\n<p>There are records of -50\u00b0C in Antarctica.<\/p>\n\n\n\n<p>It&#8217;s hard to imagine about -270\u00b0C as we live on the earth.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>However, there is still a slight temperature in space.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Thermal energy is generated by the motion of atoms and molecules but such motion ceases at about -273\u00b0C.<\/p>\n\n\n\n<p>It is called absolute zero because there is no temperature lower than this.<\/p>\n\n\n\n<p>(The absolute temperature is familiar to those who have studied chemistry and physics.)<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>As we mentioned, the temperature in space is about -270\u00b0C and it is higher than the absolute zero, -273\u00b0C.<\/p>\n\n\n\n<p>This means that atoms and molecules exist in the space just enough to create the thermal energy.<\/p>\n\n\n\n<p>Therefore the space is not &#8220;the absolute vacuum&#8221; that is in state that it does not have molecules at all.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Actually, it is believed that the space had higher temperature and was more compact when it was first created, but as it continued to expand, it had cooled to -270\u00b0C.&nbsp;<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>If there is no absolute vacuum in space, it is extremely difficult to achieve an absolute vacuum on the earth.<\/p>\n\n\n\n<p>However, industrial vacuum, which is less than 1 atmospheric pressure, is useful in our daily lives.<\/p>\n\n\n\n<p>Our sputtering equipment can also use a vacuum to deposit films on a variety of materials.<\/p>\n\n\n\n<p>We hope you can feel a little bit of space in sputtering equipment.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><a href=\"https:\/\/agus.co.jp\/en\/?p=363\">Click here to see our space chamber that can reproduce the vacuum of space.<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/agus.co.jp\/en\/?cat=4\">More information about our spattering equipment.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Is it true that the space is said to be a vacuum? The answer is both yes an[\u3082\u3063\u3068\u8aad\u307e\u305b\u3066\u301c]<\/p>\n","protected":false},"author":1,"featured_media":2992,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[58],"tags":[],"class_list":["post-2989","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Is the space really a vacuum? This time let us talk about it more clearly. | SUGA Co., Ltd.<\/title>\n<meta name=\"description\" content=\"Is it true that the space is said to be a vacuum? 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