{"id":2827,"date":"2022-06-20T09:58:31","date_gmt":"2022-06-20T00:58:31","guid":{"rendered":"https:\/\/agus.co.jp\/en\/?p=2827"},"modified":"2022-11-25T10:44:16","modified_gmt":"2022-11-25T01:44:16","slug":"we-think-that-we-know-what-the-vacuum-is-like-but-actually-we-dont-this-time-let-us-talk-about-it-more-clearly","status":"publish","type":"post","link":"https:\/\/agus.co.jp\/en\/?p=2827","title":{"rendered":"Do we really know what &#8216;vacuum&#8217; is?"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2828 aligncenter\" src=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2460.jpg\" alt=\"\" width=\"960\" height=\"539\" srcset=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2460.jpg 960w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2460-300x168.jpg 300w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2460-768x431.jpg 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">We often hear the word \u201cvacuum\u201d and it is used quite a bit in our daily lives.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">For example,<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The vacuum packing for long term food preservation.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A mechanism that keeps hot drinks in a thermos from getting cold.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A mechanism for drying instant ramen noodles.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">And so on.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span style=\"font-weight: 400;\">What is a vacuum?\u00a0<\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2829 aligncenter\" src=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2461.jpg\" alt=\"\" width=\"960\" height=\"540\" srcset=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2461.jpg 960w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2461-300x169.jpg 300w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2461-768x432.jpg 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">The air which we breath is mainly composed of nitrogen and oxygen molecules, although we cannot recognize them with the naked eye, such molecules are crawling everywhere.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Specifically, how much nitrogen and oxygen molecules are drifting\u2026<\/span><\/p>\n<p><span style=\"font-weight: 400;\">At 0 \u2103 near the ground, there are about 600000000000000000000000 in a volume of 22.4 liters.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you studied chemistry, you may be familiar with the Avogadro constant.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Although we are not aware of, we live with air that is packed with these molecules.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">We feel the weight unconsciously, and the force that is being imposed is called atmospheric pressure.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">It is about one atmospheric pressure near the ground.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2830 aligncenter\" src=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2462.jpg\" alt=\"\" width=\"960\" height=\"640\" srcset=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2462.jpg 960w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2462-300x200.jpg 300w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2462-768x512.jpg 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">The air becomes thinner <\/span> <span style=\"font-weight: 400;\">when you are in the mountains at high altitude or flying in an airplane.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The number of molecules in the air is also reduced, resulting in lower atmospheric pressure.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A water boils at a lower temperature than on the ground when climbing a mountain, or bagged snacks brought on an airplane is inflated in the air, due to the lower atmospheric pressure.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">The ultimate state with no molecules in the thin are is called vacuum.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">However, it is difficult to completely eliminate molecules such as nitrogen and oxygen on the earth.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span style=\"font-weight: 400;\">There are different types of vacuum.<\/span><\/h2>\n<h3><span style=\"font-weight: 400;\">Perfect vacuum<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The state in which there are no molecules at all in the atmosphere = zero atmospheric pressure.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">It is only a virtual state and it has not been realized.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">For example, although space is said to be a vacuum, it is believed that molecules do exist albeit in trace amounts even in the universe.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">It is not easy to realize on the earth.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Negative pressure<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">A condition in which the pressure is lower than standard atmospheric pressure (1 bar).<\/span><span style=\"font-weight: 400;\">\u3000<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The vacuum used in industry is this negative pressure, which is divided into four levels according to JIS standards: low, middle, high and ultra-high vacuum.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2831 aligncenter\" src=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2463.jpg\" alt=\"\" width=\"960\" height=\"720\" srcset=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2463.jpg 960w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2463-300x225.jpg 300w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u771f\u7a7a\u3068\u306f\uff1f\u2463-768x576.jpg 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">The thermos mechanism introduced earlier uses a low vacuum.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The drying Instant ramen noodles uses high vacuum.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2832 aligncenter\" src=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u83c5\u88fd\u4f5c\u6240\u3000\u30b9\u30d1\u30c3\u30bf\u88c5\u7f6e.png\" alt=\"\" width=\"863\" height=\"648\" srcset=\"https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u83c5\u88fd\u4f5c\u6240\u3000\u30b9\u30d1\u30c3\u30bf\u88c5\u7f6e.png 863w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u83c5\u88fd\u4f5c\u6240\u3000\u30b9\u30d1\u30c3\u30bf\u88c5\u7f6e-300x225.png 300w, https:\/\/agus.co.jp\/en\/wp-content\/uploads\/2022\/06\/\u83c5\u88fd\u4f5c\u6240\u3000\u30b9\u30d1\u30c3\u30bf\u88c5\u7f6e-768x577.png 768w\" sizes=\"auto, (max-width: 863px) 100vw, 863px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Since vacuum conditions can generate plasma (electrical discharge phenomenon) uniformly, it is used in the mechanism of film deposition by sputtering equipment.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">AGUS offers a variety of vacuum equipment such as sputtering equipment.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><a href=\"https:\/\/agus.co.jp\/en\/?cat=4\">For more information on our vacuum equipment, Click here.<\/a><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\"><a href=\"https:\/\/agus.co.jp\/en\/?page_id=95\">For inquiries about our products and services, Click here.<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; We often hear the word \u201cvacuum\u201d and it is used quite a bit in our da[\u3082\u3063\u3068\u8aad\u307e\u305b\u3066\u301c]<\/p>\n","protected":false},"author":1,"featured_media":2885,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[58],"tags":[],"class_list":["post-2827","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>Do we really know what &#039;vacuum&#039; is? | SUGA Co., Ltd.<\/title>\n<meta name=\"description\" content=\"&nbsp; We often hear the word \u201cvacuum\u201d and it is used quite a bit in our daily\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/agus.co.jp\/en\/?p=2827\" \/>\n<meta property=\"og:locale\" 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