{"id":2557,"date":"2014-11-16T17:56:05","date_gmt":"2014-11-16T15:56:05","guid":{"rendered":"http:\/\/viewonphysics.gr\/?p=2557"},"modified":"2020-04-16T09:46:09","modified_gmt":"2020-04-16T06:46:09","slug":"%cf%83%cf%85%ce%bd%ce%b8%ce%ae%ce%ba%ce%b5%cf%82-%ce%ad%ce%bb%ce%bb%ce%b5%ce%b9%cf%88%ce%b7%cf%82-%ce%b2%ce%b1%cf%81%cf%8d%cf%84%ce%b7%cf%84%ce%b1%cf%82","status":"publish","type":"post","link":"https:\/\/viewonphysics.gr\/?p=2557","title":{"rendered":"\u03a3\u03c5\u03bd\u03b8\u03ae\u03ba\u03b5\u03c2 \u0388\u03bb\u03bb\u03b5\u03b9\u03c8\u03b7\u03c2 \u0392\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2"},"content":{"rendered":"<p>\u039f \u039d\u03cc\u03bc\u03bf\u03c2 \u03c4\u03b7\u03c2 \u03a0\u03b1\u03b3\u03ba\u03cc\u03c3\u03bc\u03b9\u03b1\u03c2 \u0388\u03bb\u03be\u03b7\u03c2 \u03c4\u03bf\u03c5 \u039d\u03b5\u03cd\u03c4\u03c9\u03bd\u03b1 \u03b4\u03b5 \u03b4\u03b9\u03b4\u03ac\u03c3\u03ba\u03b5\u03c4\u03b1\u03b9 \u03c3\u03b5 \u03ba\u03b1\u03bc\u03af\u03b1 \u03c4\u03ac\u03be\u03b7 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\u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2.<\/p>\n<p>\u0391\u03bd \u03ba\u03b1\u03b9 \u03bc\u03ad\u03c7\u03c1\u03b9 \u03c3\u03ae\u03bc\u03b5\u03c1\u03b1 \u03b1\u03ba\u03cc\u03bc\u03b7 \u03b4\u03b5 \u03b3\u03bd\u03c9\u03c1\u03af\u03b6\u03bf\u03c5\u03bc\u03b5 \u03c4\u03bf\u03bd \u03b1\u03ba\u03c1\u03b9\u03b2\u03ae \u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03c3\u03bc\u03cc \u03c4\u03b7\u03c2 \u03b2\u03b1\u03c1\u03c5\u03c4\u03b9\u03ba\u03ae\u03c2 \u03b1\u03bb\u03bb\u03b7\u03bb\u03b5\u03c0\u03af\u03b4\u03c1\u03b1\u03c3\u03b7\u03c2 \u03ba\u03b1\u03b9 \u03b4\u03b5\u03bd \u03ad\u03c7\u03bf\u03c5\u03bc\u03b5 \u03b9\u03b4\u03ad\u03b1 \u03c0\u03ce\u03c2 \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03b5\u03af, \u03b1\u03c0\u03b1\u03b9\u03c4\u03bf\u03cd\u03bc\u03b5 \u03b1\u03c0\u03cc \u03c4\u03bf\u03c5\u03c2 \u03bc\u03b1\u03b8\u03b7\u03c4\u03ad\u03c2 \u03bd\u03b1 \u03b1\u03bd\u03c4\u03b9\u03bb\u03b7\u03c6\u03b8\u03bf\u03cd\u03bd, \u03b3\u03b9\u03b1\u03c4\u03af \u03bf\u03b9 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\u03b1\u03c3\u03c4\u03c1\u03bf\u03bd\u03b1\u03cd\u03c4\u03b5\u03c2 \u03b2\u03c1\u03af\u03c3\u03ba\u03bf\u03bd\u03c4\u03b1\u03b9 \u03b5\u03ba\u03c4\u03cc\u03c2 \u03c4\u03b7\u03c2 \u03b1\u03c4\u03bc\u03cc\u03c3\u03c6\u03b1\u03b9\u03c1\u03b1\u03c2 \u03ae \u03cc\u03c4\u03b9 \u03b2\u03c1\u03af\u03c3\u03ba\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c0\u03bf\u03bb\u03cd \u03bc\u03b1\u03ba\u03c1\u03c5\u03ac \u03b1\u03c0\u03cc \u03c4\u03b7 \u0393\u03b7 \u03ba\u03b1\u03b9 \u03b4\u03b5\u03bd \u03c6\u03c4\u03ac\u03bd\u03b5\u03b9 \u03bc\u03ad\u03c7\u03c1\u03b9 \u03b5\u03ba\u03b5\u03af \u03b7 \u03ad\u03bb\u03be\u03b7 \u03c4\u03b7\u03c2, \u03cc\u03c0\u03c9\u03c2 \u03ba\u03b1\u03b9 \u03b7 \u03a3\u03b5\u03bb\u03ae\u03bd\u03b7.<\/p>\n<p>\u0397 \u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b9\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b1\u03c3\u03ba\u03b5\u03af\u03c4\u03b1\u03b9 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd 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\u03b2\u03b1\u03b8\u03cd \u03b4\u03b9\u03ac\u03c3\u03c4\u03b7\u03bc\u03b1, \u03c0\u03ad\u03c1\u03b1 \u200b\u200b\u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03c0\u03b5\u03c1\u03b9\u03bf\u03c7\u03ae \u03c4\u03c9\u03bd \u03c0\u03bb\u03b1\u03bd\u03b7\u03c4\u03ce\u03bd \u03ae \u03c4\u03c9\u03bd \u03b1\u03c3\u03c4\u03ad\u03c1\u03c9\u03bd, \u03cc\u03c0\u03bf\u03c5 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03c0\u03c1\u03b1\u03b3\u03bc\u03b1\u03c4\u03b9\u03ba\u03ac \u03bd\u03b1 \u03be\u03b5\u03c6\u03cd\u03b3\u03b5\u03b9 \u03ba\u03b1\u03bd\u03b5\u03af\u03c2 \u03b1\u03c0\u03cc \u03c4\u03b7 \u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1.<\/p>\n<div id=\"attachment_2562\" style=\"width: 357px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2014\/11\/image1.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-2562\" class=\"wp-image-2562\" src=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2014\/11\/image1-300x173.jpg\" alt=\"\" width=\"347\" height=\"200\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2014\/11\/image1-300x173.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2014\/11\/image1-1024x590.jpg 1024w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2014\/11\/image1.jpg 1956w\" sizes=\"auto, (max-width: 347px) 100vw, 347px\" \/><\/a><p id=\"caption-attachment-2562\" class=\"wp-caption-text\">\u0395\u03b9\u03ba. 1. \u03a3\u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03a3, \u03c0\u03bf\u03c5 \u03b2\u03c1\u03af\u03c3\u03ba\u03b5\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7 \u03b6\u03c5\u03b3\u03b1\u03c1\u03b9\u03ac, \u03b1\u03c3\u03ba\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03b4\u03cd\u03bf \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2: \u0397 \u03ad\u03bb\u03be\u03b7 \u03c4\u03b7\u03c2 \u0393\u03b7\u03c2 w \u03ba\u03b1\u03b9 \u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 N \u03c4\u03b7\u03c2 \u03b6\u03c5\u03b3\u03b1\u03c1\u03b9\u03ac\u03c2 (\u0391). \u0397 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\u03c0\u03c1\u03ce\u03c4\u03bf \u03b2\u03ae\u03bc\u03b1 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b7 \u03b4\u03b9\u03ac\u03ba\u03c1\u03b9\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03ba\u03b1\u03c4\u03b1\u03bd\u03cc\u03b7\u03c3\u03b7 \u03c4\u03c9\u03bd \u03b4\u03cd\u03bf \u03b5\u03bd\u03bd\u03bf\u03b9\u03ce\u03bd.<\/p>\n<p>\u03a3\u03c4\u03b7\u03bd \u03b5\u03b9\u03ba. 1 \u03c6\u03b1\u03af\u03bd\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c4\u03c1\u03b5\u03b9\u03c2 \u03ba\u03b1\u03c4\u03b5\u03c5\u03b8\u03cd\u03bd\u03c3\u03b5\u03b9\u03c2 \u03c4\u03b7\u03c2 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2 <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/viewonphysics.gr\/wp-content\/ql-cache\/quicklatex.com-8934d98f3a84930815fcc5a1049ea49a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#118;&#101;&#99;&#32;&#92;&#117;&#112;&#115;&#105;&#108;&#111;&#110;\" title=\"Rendered by QuickLaTeX.com\" height=\"13\" width=\"12\" style=\"vertical-align: 0px;\"\/> \u03ba\u03b1\u03b9 \u03bc\u03af\u03b1 \u03ba\u03b1\u03c4\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7\u03c2 <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/viewonphysics.gr\/wp-content\/ql-cache\/quicklatex.com-7fb890133a0c3d1dc5b763562a08a565_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#118;&#101;&#99;&#32;&#92;&#97;&#108;&#112;&#104;&#97;\" title=\"Rendered by QuickLaTeX.com\" height=\"13\" width=\"12\" style=\"vertical-align: 0px;\"\/> \u03b3\u03b9\u03b1 \u03c4\u03bf \u03c3\u03cd\u03c3\u03c4\u03b7\u03bc\u03b1 \u03a3\u03ce\u03bc\u03b1-\u0394\u03ac\u03c0\u03b5\u03b4\u03bf. \u0397 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03b5\u03bc\u03c6\u03b1\u03bd\u03af\u03b6\u03b5\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03c4\u03b9\u03c2 \u03ba\u03b1\u03c4\u03b5\u03c5\u03b8\u03cd\u03bd\u03c3\u03b5\u03b9\u03c2: (1), \u03ba\u03af\u03bd\u03b7\u03c3\u03b7 \u03ba\u03b1\u03c4\u03b1\u03ba\u03cc\u03c1\u03c5\u03c6\u03b7 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03c0\u03ac\u03bd\u03c9, (2), \u03ba\u03af\u03bd\u03b7\u03c3\u03b7 \u03ba\u03b1\u03c4\u03b1\u03ba\u03cc\u03c1\u03c5\u03c6\u03b7 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03ba\u03ac\u03c4\u03c9 \u03ba\u03b1\u03b9 (3), \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1 \u03ba\u03af\u03bd\u03b7\u03c3\u03b7, \u03b5\u03bd\u03ce \u03b7 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03b5\u03bc\u03c6\u03b1\u03bd\u03af\u03b6\u03b5\u03c4\u03b1\u03b9 \u03c9\u03c2 \u03ba\u03b1\u03c4\u03b1\u03ba\u03cc\u03c1\u03c5\u03c6\u03b7 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03ba\u03ac\u03c4\u03c9, \u03cc\u03c0\u03c9\u03c2 \u03b1\u03ba\u03c1\u03b9\u03b2\u03ce\u03c2 \u03b7 \u03ad\u03bb\u03be\u03b7 \u03c4\u03b7\u03c2 \u0393\u03b7\u03c2.<\/p>\n<p>\u03a3\u03c4\u03b7\u03bd \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7 (1), \u03ad\u03c7\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b7\u03bd \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03bc\u03b5 \u03b1\u03bd\u03c4\u03af\u03b8\u03b5\u03c4\u03b5\u03c2 \u03ba\u03b1\u03c4\u03b5\u03c5\u03b8\u03cd\u03bd\u03c3\u03b5\u03b9\u03c2, \u03bf\u03c0\u03cc\u03c4\u03b5 \u03c4\u03bf \u03c3\u03cd\u03c3\u03c4\u03b7\u03bc\u03b1 \u03b5\u03c0\u03b9\u03b2\u03c1\u03b1\u03b4\u03cd\u03bd\u03b5\u03c4\u03b1\u03b9 (\u03c6\u03c1\u03b5\u03bd\u03ac\u03c1\u03b5\u03b9) \u03ba\u03b9\u03bd\u03bf\u03cd\u03bc\u03b5\u03bd\u03bf \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03c0\u03ac\u03bd\u03c9.<\/p>\n<p>\u03a3\u03c4\u03b7\u03bd \u03c0\u03b5\u03c1\u03af\u03c0\u03c9\u03c3\u03b7 (2) \u03ad\u03c7\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b7\u03bd \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03bc\u03b5 \u03af\u03b4\u03b9\u03b5\u03c2 \u03ba\u03b1\u03c4\u03b5\u03c5\u03b8\u03cd\u03bd\u03c3\u03b5\u03b9\u03c2, \u03bf\u03c0\u03cc\u03c4\u03b5 \u03c4\u03bf \u03c3\u03cd\u03c3\u03c4\u03b7\u03bc\u03b1 \u03b5\u03c0\u03b9\u03c4\u03b1\u03c7\u03cd\u03bd\u03b5\u03c4\u03b1\u03b9 \u03ba\u03b9\u03bd\u03bf\u03cd\u03bc\u03b5\u03bd\u03bf \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03ba\u03ac\u03c4\u03c9.<\/p>\n<p>\u03a3\u03c4\u03b7\u03bd \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7 (3) \u03ad\u03c7\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b7\u03bd \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03bc\u03b5 \u03ba\u03ac\u03b8\u03b5\u03c4\u03b5\u03c2 \u03ba\u03b1\u03c4\u03b5\u03c5\u03b8\u03cd\u03bd\u03c3\u03b5\u03b9\u03c2. \u03a4\u03bf \u03c3\u03cd\u03c3\u03c4\u03b7\u03bc\u03b1 \u03c4\u03ce\u03c1\u03b1 \u03c0\u03b5\u03c1\u03b9\u03c3\u03c4\u03c1\u03ad\u03c6\u03b5\u03c4\u03b1\u03b9 \u03c3\u03b5 \u03ba\u03bb\u03b5\u03b9\u03c3\u03c4\u03ae \u03c4\u03c1\u03bf\u03c7\u03b9\u03ac \u03b3\u03cd\u03c1\u03c9 \u03b1\u03c0\u03cc \u03b1\u03c0\u03cc \u03ad\u03bd\u03b1 \u03ba\u03ad\u03bd\u03c4\u03c1\u03bf (\u03ba\u03b5\u03bd\u03c4\u03c1\u03bf\u03bc\u03cc\u03bb\u03bf\u03c2 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7). \u0391\u03c5\u03c4\u03cc \u03ba\u03ac\u03bd\u03bf\u03c5\u03bd \u03bf\u03b9 \u03b4\u03bf\u03c1\u03c5\u03c6\u03cc\u03c1\u03bf\u03b9 \u03b3\u03cd\u03c1\u03c9 \u03b1\u03c0\u03cc \u03c4\u03b7 \u0393\u03b7 \u03ae \u03b7 \u03a3\u03b5\u03bb\u03ae\u03bd\u03b7 \u03c0\u03bf\u03c5 \u03c0\u03b1\u03c1\u03b1\u03bc\u03ad\u03bd\u03b5\u03b9 \u03bc\u03cc\u03bd\u03b9\u03bc\u03b1 &#8220;\u03ba\u03bf\u03bb\u03bb\u03b7\u03bc\u03ad\u03bd\u03b7&#8221; \u03c3\u03c4\u03bf \u03c4\u03b1\u03be\u03af\u03b4\u03b9 \u03c4\u03b7\u03c2 \u0393\u03b7\u03c2 \u03b3\u03cd\u03c1\u03c9 \u03b1\u03c0\u03cc \u03c4\u03bf\u03bd \u0389\u03bb\u03b9\u03bf.<\/p>\n<p>\u039a\u03b1\u03b9 \u03c3\u03c4\u03b9\u03c2 \u03c4\u03c1\u03b5\u03b9\u03c2 \u03b1\u03c5\u03c4\u03ad\u03c2 \u03c0\u03b5\u03c1\u03b9\u03c0\u03c4\u03ce\u03c3\u03b5\u03b9\u03c2 \u03ba\u03af\u03bd\u03b7\u03c3\u03b7\u03c2 &#8211; \u03b5\u03c0\u03b9\u03b2\u03c1\u03b1\u03b4\u03c5\u03bd\u03cc\u03bc\u03b5\u03bd\u03b7 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03c0\u03ac\u03bd\u03c9, \u03b5\u03c0\u03b9\u03c4\u03b1\u03c7\u03c5\u03bd\u03cc\u03bc\u03b5\u03bd\u03b7 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03ba\u03ac\u03c4\u03c9, \u03ba\u03bb\u03b5\u03b9\u03c3\u03c4\u03ae \u03c4\u03c1\u03bf\u03c7\u03b9\u03ac &#8211; \u03b5\u03af\u03bd\u03b1\u03b9 \u03b4\u03c5\u03bd\u03b1\u03c4\u03cc\u03bd \u03bd\u03b1 \u03b5\u03c0\u03b9\u03c4\u03b5\u03c5\u03c7\u03b8\u03b5\u03af \u03bc\u03b7\u03b4\u03b5\u03bd\u03b9\u03c3\u03bc\u03cc\u03c2 \u03c4\u03b7\u03c2 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7\u03c2 \u039d, \u03c0\u03bf\u03c5 \u03b1\u03bb\u03bb\u03b7\u03bb\u03b5\u03c0\u03b9\u03b4\u03c1\u03ac \u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03a3 \u03bc\u03b5 \u03c4\u03bf \u03b4\u03ac\u03c0\u03b5\u03b4\u03bf \u03ba\u03b1\u03b9 \u03ac\u03c1\u03b1 \u03c3\u03c5\u03bd\u03b8\u03ae\u03ba\u03b5\u03c2 \u03ad\u03bb\u03bb\u03b5\u03b9\u03c8\u03b7\u03c2 \u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2. \u0399\u03b4\u03bf\u03cd \u03b3\u03b9\u03b1\u03c4\u03af.<\/p>\n<p>\u0395\u03c6\u03b1\u03c1\u03bc\u03cc\u03b6\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c4\u03bf \u0394\u03b5\u03cd\u03c4\u03b5\u03c1\u03bf \u039d\u03cc\u03bc\u03bf \u03c4\u03bf\u03c5 \u039d\u03b5\u03cd\u03c4\u03c9\u03bd\u03b1 \u03c3\u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03a3 \u03ad\u03c7\u03bf\u03c5\u03bc\u03b5:<\/p>\n<p><a name=\"id2513381015\"><\/a><\/p>\n<p class=\"ql-center-displayed-equation\" style=\"line-height: 18px;\"><span class=\"ql-right-eqno\"> (1) <\/span><span class=\"ql-left-eqno\"> &nbsp; <\/span><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/viewonphysics.gr\/wp-content\/ql-cache\/quicklatex.com-b716bc4b9b8c71f65bbb31c114c8b08b_l3.png\" height=\"18\" width=\"400\" class=\"ql-img-displayed-equation quicklatex-auto-format\" alt=\"&#92;&#98;&#101;&#103;&#105;&#110;&#123;&#101;&#113;&#117;&#97;&#116;&#105;&#111;&#110;&#42;&#125;&#32; &#87;&#45;&#78;&#32;&#61;&#32;&#109;&#32;&#92;&#99;&#100;&#111;&#116;&#32;&#97;&#32;&#92;&#76;&#101;&#102;&#116;&#114;&#105;&#103;&#104;&#116;&#97;&#114;&#114;&#111;&#119;&#32;&#78;&#61;&#87;&#45;&#109;&#32;&#92;&#99;&#100;&#111;&#116;&#32;&#97;&#32;&#92;&#76;&#101;&#102;&#116;&#114;&#105;&#103;&#104;&#116;&#97;&#114;&#114;&#111;&#119;&#32;&#78;&#61;&#109;&#40;&#103;&#45;&#97;&#41; &#92;&#101;&#110;&#100;&#123;&#101;&#113;&#117;&#97;&#116;&#105;&#111;&#110;&#42;&#125;\" title=\"Rendered by QuickLaTeX.com\"\/><\/p>\n<p>\u0391\u03c0\u03cc \u03c4\u03b7 \u03c3\u03c7\u03ad\u03c3\u03b7 (<a href=\"#id2513381015\">1<\/a>) \u03c0\u03c1\u03bf\u03ba\u03cd\u03c0\u03c4\u03b5\u03b9 \u03cc\u03c4\u03b9 \u03b1\u03bd \u03b7 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03c3\u03c5\u03c3\u03c4\u03ae\u03bc\u03b1\u03c4\u03bf\u03c2 <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/viewonphysics.gr\/wp-content\/ql-cache\/quicklatex.com-acc2cb8db760d0b1e3d9d42e748ac78b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#118;&#101;&#99;&#32;&#97;\" title=\"Rendered by QuickLaTeX.com\" height=\"13\" width=\"11\" style=\"vertical-align: 0px;\"\/> \u03b3\u03af\u03bd\u03b5\u03b9 \u03af\u03c3\u03b7 \u03bc\u03b5 \u03c4\u03b7\u03bd \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2 <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/viewonphysics.gr\/wp-content\/ql-cache\/quicklatex.com-098934bda9c880bd3985b52458be6c40_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#118;&#101;&#99;&#32;&#103;\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"11\" style=\"vertical-align: -4px;\"\/>, \u03b1\u03bd \u03b4\u03b7\u03bb\u03b1\u03b4\u03ae \u03b4\u03ce\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c3\u03c4\u03bf \u03c3\u03cd\u03c3\u03c4\u03b7\u03bc\u03b1 \u03ba\u03b1\u03c4\u03b1\u03ba\u03cc\u03c1\u03c5\u03c3\u03b7 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03ba\u03ac\u03c4\u03c9 \u03af\u03c3\u03b7 \u03bc\u03b5 g, \u03c4\u03cc\u03c4\u03b5 \u03b1\u03bd\u03b5\u03be\u03b1\u03c1\u03c4\u03ae\u03c4\u03c9\u03c2 \u03c4\u03b7\u03c2 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03ac\u03c2 \u03c4\u03bf\u03c5, \u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03b1\u03bb\u03bb\u03b7\u03bb\u03b5\u03c0\u03af\u03b4\u03c1\u03b1\u03c3\u03b7\u03c2 \u03bc\u03b5 \u03c4\u03bf \u03b4\u03ac\u03c0\u03b5\u03b4\u03bf \u03bc\u03b7\u03b4\u03b5\u03bd\u03af\u03b6\u03b5\u03c4\u03b1\u03b9 \u03ba\u03b1\u03b9 \u03ad\u03c7\u03bf\u03c5\u03bc\u03b5 \u03c3\u03c5\u03bd\u03b8\u03ae\u03ba\u03b5\u03c2 \u03ad\u03bb\u03bb\u03b5\u03c8\u03b7\u03c2 \u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2.<\/p>\n<p>\u038c\u03c4\u03b1\u03bd \u03bb\u03bf\u03b9\u03c0\u03cc\u03bd \u03b2\u03bb\u03ad\u03c0\u03bf\u03c5\u03bc\u03b5 \u03c4\u03bf\u03c5\u03c2 \u03b1\u03c3\u03c4\u03c1\u03bf\u03bd\u03b1\u03cd\u03c4\u03b5\u03c2 \u03bd\u03b1 \u03c0\u03b5\u03c4\u03bf\u03cd\u03bd \u03bc\u03ad\u03c3\u03b1 \u03c3\u03c4\u03bf \u03b8\u03b1\u03bb\u03b1\u03bc\u03af\u03c3\u03ba\u03bf \u03c4\u03bf\u03c5\u03c2 \u03b9\u03ba\u03b1\u03bd\u03bf\u03c0\u03bf\u03b9\u03b5\u03af\u03c4\u03b1\u03b9 \u03b7 \u03c3\u03c5\u03bd\u03b8\u03ae\u03ba\u03b7 \u03b1\u03c5\u03c4\u03ae \u03ba\u03b1\u03b9 \u03b5\u03af\u03bc\u03b1\u03c3\u03c4\u03b5 \u03c3\u03c4\u03b7\u03bd \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7 (3) \u03c4\u03b7\u03c2 \u03b5\u03b9\u03ba. 1, \u03cc\u03c0\u03bf\u03c5 \u03b7 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03ba\u03ac\u03b8\u03b5\u03c4\u03b7 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b7\u03bd \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7, \u03b1\u03c6\u03bf\u03cd \u03c0\u03b5\u03c1\u03b9\u03c3\u03c4\u03c1\u03ad\u03c6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03b3\u03cd\u03c1\u03c9 \u03b1\u03c0\u03cc \u03c4\u03b7 \u0393\u03b7 \u03bc\u03b5 &#8220;\u03ba\u03b5\u03bd\u03c4\u03c1\u03bf\u03bc\u03cc\u03bb\u03bf \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7&#8221; \u03af\u03c3\u03b7 \u03bc\u03b5 \u03c4\u03b7\u03bd \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2 g.<\/p>\n<p><iframe loading=\"lazy\" src=\"\/\/www.youtube.com\/embed\/1ieR8hIXUIg\" width=\"750\" height=\"420\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p><strong><span style=\"font-size: 12pt;\">&#8220;\u039a\u03bf\u03bc\u03ae\u03c4\u03b5\u03c2 \u03c0\u03bf\u03c5 \u03be\u03b5\u03c1\u03bd\u03ac\u03c2&#8221;<\/span><\/strong><\/p>\n<p>\u0391\u03bd \u03ba\u03b1\u03b9 \u03c4\u03b1 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\u03b1\u03b5\u03c1\u03bf\u03c0\u03bb\u03ac\u03bd\u03bf \u03c0\u03bf\u03c5 \u03c0\u03b5\u03c4\u03ac\u03b5\u03b9 \u03c3\u03b5 \u03c0\u03b1\u03c1\u03b1\u03b2\u03bf\u03bb\u03b9\u03ba\u03ae \u03c4\u03c1\u03bf\u03c7\u03b9\u03ac (\u03b5\u03b9\u03ba. 2). \u03a4\u03ad\u03c4\u03bf\u03b9\u03bf\u03c5 \u03b5\u03af\u03b4\u03bf\u03c5\u03c2 \u03b1\u03b5\u03c1\u03bf\u03c0\u03bb\u03ac\u03bd\u03b1, \u03bc\u03b5 \u03c4\u03bf \u03c0\u03b1\u03c1\u03b1\u03c4\u03c3\u03bf\u03cd\u03ba\u03bb\u03b9 &#8220;\u03ba\u03bf\u03bc\u03ae\u03c4\u03b5\u03c2 \u03c0\u03bf\u03c5 \u03be\u03b5\u03c1\u03bd\u03ac\u03c2&#8221;, \u03bb\u03cc\u03b3\u03c9 \u03c4\u03b7\u03c2 \u03b6\u03ac\u03bb\u03b7\u03c2 \u03c0\u03bf\u03c5 \u03b5\u03c0\u03b9\u03c6\u03ad\u03c1\u03bf\u03c5\u03bd, \u03b5\u03c0\u03b9\u03c4\u03c1\u03ad\u03c0\u03bf\u03c5\u03bd \u03c3\u03c4\u03bf\u03c5\u03c2 \u03b5\u03c0\u03b9\u03b2\u03ac\u03c4\u03b5\u03c2\u00a0\u03bd\u03b1 \u03b1\u03b9\u03c9\u03c1\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03bb\u03af\u03b3\u03b1 \u03bb\u03b5\u03c0\u03c4\u03ac, \u03b5\u03bd\u03ce \u03c4\u03bf \u03b1\u03b5\u03c1\u03bf\u03c0\u03bb\u03ac\u03bd\u03bf \u03b2\u03c1\u03af\u03c3\u03ba\u03b5\u03c4\u03b1\u03b9 \u03c0\u03ac\u03bd\u03c9 \u03c3\u03c4\u03b7\u03bd \u03c4\u03c1\u03bf\u03c7\u03b9\u03ac \u03c4\u03bf\u03c5 \u03c0\u03b1\u03c1\u03b1\u03b2\u03bf\u03bb\u03b9\u03ba\u03bf\u03cd \u03c4\u03cc\u03be\u03bf\u03c5. \u039f\u03b9 \u03b1\u03c3\u03c4\u03c1\u03bf\u03bd\u03b1\u03cd\u03c4\u03b5\u03c2 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03bf\u03cd\u03bd \u03b1\u03c5\u03c4\u03ae \u03c4\u03b7 \u03bc\u03ad\u03b8\u03bf\u03b4\u03bf \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03b5\u03ba\u03c0\u03b1\u03b9\u03b4\u03b5\u03cd\u03bf\u03bd\u03c4\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03c4\u03b9\u03c2 \u03b4\u03b9\u03b1\u03c3\u03c4\u03b7\u03bc\u03b9\u03ba\u03ad\u03c2 \u03c0\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2.<\/p>\n<div id=\"attachment_2615\" style=\"width: 585px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2014\/11\/\u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1-\u03c4\u03c1\u03bf\u03c7\u03b9\u03ac2.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-2615\" class=\"wp-image-2615 \" src=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2014\/11\/\u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1-\u03c4\u03c1\u03bf\u03c7\u03b9\u03ac2-300x48.jpg\" alt=\"\" width=\"575\" height=\"92\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2014\/11\/\u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1-\u03c4\u03c1\u03bf\u03c7\u03b9\u03ac2-300x48.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2014\/11\/\u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1-\u03c4\u03c1\u03bf\u03c7\u03b9\u03ac2.jpg 920w\" sizes=\"auto, (max-width: 575px) 100vw, 575px\" \/><\/a><p id=\"caption-attachment-2615\" class=\"wp-caption-text\">\u0395\u03b9\u03ba. 2. \u0395\u03b9\u03b4\u03b9\u03ba\u03ac 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\u03c0\u03b1\u03c1\u03b1\u03b2\u03bf\u03bb\u03b9\u03ba\u03bf\u03cd \u03c0\u03b5\u03c4\u03ac\u03b3\u03bc\u03b1\u03c4\u03bf\u03c2 \u03c4\u03bf \u03b1\u03b5\u03c1\u03bf\u03c0\u03bb\u03ac\u03bd\u03bf \u03ba\u03b9\u03bd\u03b5\u03af\u03c4\u03b1\u03b9 \u03c3\u03b5 \u03c4\u03c1\u03bf\u03c7\u03b9\u03ac \u03c0\u03bf\u03c5 \u03b4\u03af\u03bd\u03b5\u03b9 0g (\u03ad\u03bb\u03bb\u03b5\u03b9\u03c8\u03b7 \u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2) \u03bc\u03ad\u03c7\u03c1\u03b9 40 \u03b4\u03b5\u03c5\u03c4\u03b5\u03c1\u03cc\u03bb\u03b5\u03c0\u03c4\u03b1. \u03a4\u03bf \u03c0\u03b1\u03c1\u03b1\u03b2\u03bf\u03bb\u03b9\u03ba\u03cc \u03c0\u03ad\u03c4\u03b1\u03b3\u03bc\u03b1 \u03b4\u03b7\u03bc\u03b9\u03bf\u03c5\u03c1\u03b3\u03b5\u03af \u03ad\u03bb\u03bb\u03b5\u03b9\u03c8\u03b7 \u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2 \u03b1\u03ba\u03bf\u03bb\u03bf\u03c5\u03b8\u03ce\u03bd\u03c4\u03b1\u03c2 \u03bc\u03af\u03b1 \u03c4\u03c1\u03bf\u03c7\u03b9\u03ac \u03cc\u03c0\u03bf\u03c5 \u03b7 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03b1\u03b5\u03c1\u03bf\u03c0\u03bb\u03ac\u03bd\u03bf\u03c5 \u03b5\u03be\u03bf\u03c5\u03b4\u03b5\u03c4\u03b5\u03c1\u03ce\u03bd\u03b5\u03b9 \u03c4\u03b7\u03bd \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2 (\u0395\u03b9\u03ba. 3) \u03ba\u03b1\u03c4\u03ac \u03bc\u03ae\u03ba\u03bf\u03c2 \u03c4\u03bf\u03c5 \u03ac\u03be\u03bf\u03bd\u03b1 z, \u03ba\u03ac\u03b8\u03b5\u03c4\u03b1 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03bf\u03bd \u03b1\u03be\u03bf\u03bd\u03b1 \u03c4\u03bf\u03c5 \u03b1\u03b5\u03c1\u03bf\u03c0\u03bb\u03ac\u03bd\u03bf\u03c5.<\/p>\n<div id=\"attachment_2616\" style=\"width: 509px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2014\/11\/\u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b12.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-2616\" class=\"wp-image-2616 \" src=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2014\/11\/\u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b12-300x136.jpg\" alt=\"\" width=\"499\" height=\"226\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2014\/11\/\u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b12-300x136.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2014\/11\/\u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b12.jpg 931w\" sizes=\"auto, (max-width: 499px) 100vw, 499px\" \/><\/a><p id=\"caption-attachment-2616\" class=\"wp-caption-text\">\u0395\u03b9\u03ba. 3. \u03a3\u03b5 \u03c0\u03b5\u03af\u03c3\u03bc\u03b1 \u03b1\u03c5\u03c4\u03bf\u03cd \u03c0\u03bf\u03c5 \u03c0\u03b9\u03c3\u03c4\u03b5\u03cd\u03bf\u03c5\u03bd \u03bf\u03b9 \u03c0\u03b5\u03c1\u03b9\u03c3\u03c3\u03cc\u03c4\u03b5\u03c1\u03bf\u03b9, \u03b7 \u03c6\u03ac\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03bc\u03b7\u03b4\u03b5\u03bd\u03b9\u03ba\u03ae\u03c2 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7\u03c2 (0g, \u03b1\u03b9\u03ce\u03c1\u03b7\u03c3\u03b7) \u03c4\u03b7\u03c2 \u03c0\u03c4\u03ae\u03c3\u03b7\u03c2 \u03b1\u03c1\u03c7\u03af\u03b6\u03b5\u03b9 \u03cc\u03c4\u03b1\u03bd \u03c4\u03bf \u03b1\u03b5\u03c1\u03bf\u03c0\u03bb\u03ac\u03bd\u03bf \u03b1\u03bd\u03b5\u03b2\u03b1\u03af\u03bd\u03b5\u03b9 \u03ba\u03b1\u03b9 \u03cc\u03c7\u03b9 \u03cc\u03c4\u03b1\u03bd \u03ba\u03b1\u03c4\u03b5\u03b2\u03b1\u03af\u03bd\u03b5\u03b9. \u0391\u03bd \u03ba\u03b1\u03b9 \u03c4\u03bf \u03b1\u03b5\u03c1\u03bf\u03c0\u03bb\u03ac\u03bd\u03bf \u03ad\u03c7\u03b5\u03b9 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03b1\u03bd\u03bf\u03b4\u03b9\u03ba\u03ae, \u03ba\u03b1\u03c4\u03ac \u03c4\u03b7 \u03b4\u03b9\u03ac\u03c1\u03ba\u03b5\u03b9\u03b1 \u03c4\u03b7\u03c2 \u03c6\u03ac\u03c3\u03b7\u03c2 0g, \u03b7 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03ae \u03c4\u03bf\u03c5 \u03ad\u03c7\u03b5\u03b9 \u03ba\u03b1\u03c4\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03ba\u03ac\u03c4\u03c9, \u03c0\u03c1\u03ac\u03b3\u03bc\u03b1 \u03b1\u03c0\u03b1\u03c1\u03b1\u03af\u03c4\u03b7\u03c4\u03bf, \u03c3\u03cd\u03bc\u03c6\u03c9\u03bd\u03b1 \u03bc\u03b5 \u03c4\u03b7\u03bd \u03b5\u03be\u03af\u03c3\u03c9\u03c3\u03b7 (<a href=\"#id2513381015\">1<\/a>), \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03b5\u03c0\u03b9\u03c4\u03b5\u03c5\u03c7\u03b8\u03bf\u03cd\u03bd \u03c3\u03c5\u03bd\u03b8\u03ae\u03ba\u03b5\u03c2 \u03ad\u03bb\u03bb\u03b5\u03b9\u03c8\u03b7\u03c2 \u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2.<\/p><\/div>\n<p>\u0395\u03b9\u03b4\u03b9\u03ba\u03cc\u03c4\u03b5\u03c1\u03b1, \u03b1\u03bd \u03c4\u03bf \u03b1\u03b5\u03c1\u03bf\u03c0\u03bb\u03ac\u03bd\u03bf \u03ba\u03b1\u03b9 \u03bf\u03b9 \u03b5\u03c0\u03b9\u03b2\u03ac\u03c4\u03b5\u03c2 \u03c4\u03bf\u03c5 \u03b5\u03c0\u03b9\u03c4\u03b1\u03c7\u03c5\u03bd\u03b8\u03bf\u03cd\u03bd \u03bc\u03b5 \u03c4\u03b7\u03bd \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2 <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/viewonphysics.gr\/wp-content\/ql-cache\/quicklatex.com-4e84ba034c6c53ab7e7a483dbaf16c9a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#103;&#61;&#57;&#44;&#56;&#49;&#109;&#47;&#115;&#94;&#50;\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"107\" style=\"vertical-align: -5px;\"\/>, \u03ad\u03c7\u03bf\u03c5\u03bc\u03b5 \u03b2\u03ac\u03c3\u03b5\u03b9 \u03c4\u03b7\u03c2 \u03b5\u03be\u03af\u03c3\u03c9\u03c3\u03b7\u03c2 (<a href=\"#id2513381015\">1<\/a>) \u03bc\u03b7\u03b4\u03b5\u03bd\u03b9\u03ba\u03ae \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03b1\u03bb\u03bb\u03b7\u03bb\u03b5\u03c0\u03af\u03b4\u03c1\u03b1\u03c3\u03b7\u03c2 \u03c4\u03c9\u03bd \u03b5\u03c0\u03b9\u03b2\u03b1\u03c4\u03ce\u03bd \u03bc\u03b5 \u03c4\u03bf \u03b4\u03ac\u03c0\u03b5\u03b4\u03bf \u03c4\u03bf\u03c5 \u03b1\u03b5\u03c1\u03bf\u03c0\u03bb\u03ac\u03bd\u03bf\u03c5, \u03bf\u03c0\u03cc\u03c4\u03b5 \u03ad\u03c4\u03c3\u03b9 \u03b5\u03c0\u03b9\u03c4\u03c5\u03b3\u03c7\u03ac\u03bd\u03b5\u03c4\u03b1\u03b9 \u03b1\u03b9\u03ce\u03c1\u03b7\u03c3\u03b7 \u03c4\u03c9\u03bd \u03b5\u03c0\u03b9\u03b2\u03b1\u03c4\u03ce\u03bd \u03bc\u03ad\u03c3\u03b1 \u03c3\u03c4\u03bf \u03b1\u03b5\u03c1\u03bf\u03c0\u03bb\u03ac\u03bd\u03bf.<\/p>\n<p>\u039c\u03b9\u03b1 \u03c4\u03ad\u03c4\u03bf\u03b9\u03bf\u03c5 \u03b5\u03af\u03b4\u03bf\u03c5\u03c2 \u03c0\u03c4\u03ae\u03c3\u03b7 \u03c4\u03c5\u03c0\u03b9\u03ba\u03ac \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03b5\u03af\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc 30 \u03ad\u03c9\u03c2 60 \u03c0\u03b1\u03c1\u03b1\u03b2\u03bf\u03bb\u03b9\u03ba\u03ad\u03c2 \u03c4\u03c1\u03bf\u03c7\u03b9\u03ad\u03c2, \u03c0\u03bf\u03c5 \u03b7 \u03ba\u03ac\u03b8\u03b5 \u03bc\u03af\u03b1 \u03b4\u03af\u03bd\u03b5\u03b9 \u03b3\u03cd\u03c1\u03c9 \u03c3\u03c4\u03b1 25 \u03b4\u03b5\u03c5\u03c4\u03b5\u03c1\u03cc\u03bb\u03b5\u03c0\u03c4\u03b1 \u03b1\u03b9\u03ce\u03c1\u03b7\u03c3\u03b7. \u039c\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03c9\u03bd \u03c0\u03b1\u03c1\u03b1\u03b2\u03bf\u03bb\u03ce\u03bd \u03c4\u03bf \u03b1\u03b5\u03c1\u03bf\u03c0\u03bb\u03ac\u03bd\u03bf \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03b1\u03bd\u03b1\u03ba\u03c4\u03ac \u03cd\u03c8\u03bf\u03c2,\u00a0 \u03ba\u03b1\u03b9 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03b1\u03c5\u03c4\u03ce\u03bd \u03c4\u03c9\u03bd 40s \u03c7\u03c1\u03bf\u03bd\u03b9\u03ba\u03ce\u03bd \u03b4\u03b9\u03b1\u03c3\u03c4\u03b7\u03bc\u03ac\u03c4\u03c9\u03bd, \u03cc\u03c0\u03bf\u03c5 \u03b7 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03ba\u03ac\u03c4\u03c9 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03bc\u03b5\u03b9\u03ce\u03bd\u03b5\u03c4\u03b1\u03b9 \u03ba\u03b1\u03b9 \u03bc\u03b5\u03c4\u03b1\u03c4\u03c1\u03ad\u03c0\u03b5\u03c4\u03b1\u03b9 \u03ba\u03b1\u03c4\u03cc\u03c0\u03b9\u03bd \u03c3\u03b5 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03c0\u03ac\u03bd\u03c9, \u03b7 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03b1\u03b5\u03c1\u03bf\u03c0\u03bb\u03ac\u03bd\u03bf\u03c5 \u03c6\u03c4\u03ac\u03bd\u03b5\u03b9 \u03b1\u03c0\u03cc g \u03c3\u03b5 1,8g.<\/p>\n<p>\u03a4\u03bf \u03c0\u03c1\u03cc\u03b2\u03bb\u03b7\u03bc\u03b1 \u03ba\u03b1\u03c4\u03ac \u03c4\u03b7\u03bd \u03ba\u03af\u03bd\u03b7\u03c3\u03b7 \u03c3\u03b5 \u03c0\u03b1\u03c1\u03b1\u03b2\u03bf\u03bb\u03b9\u03ba\u03ae \u03c4\u03c1\u03bf\u03c7\u03b9\u03ac \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03bf \u03c0\u03ad\u03c4\u03b1\u03b3\u03bc\u03b1 \u03bd\u03b1 \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03ba\u03b1\u03c4\u03ac \u03c4\u03ad\u03c4\u03bf\u03b9\u03bf \u03c4\u03c1\u03cc\u03c0\u03bf \u03ce\u03c3\u03c4\u03b5 \u03bf\u03b9 \u03b5\u03c0\u03b9\u03b2\u03ac\u03c4\u03b5\u03c2 \u03bd\u03b1 \u03c0\u03b1\u03c1\u03b1\u03bc\u03ad\u03bd\u03bf\u03c5\u03bd \u03c3\u03b5 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ad\u03c2 \u03b8\u03ad\u03c3\u03b5\u03b9\u03c2 \u03bc\u03ad\u03c3\u03b1 \u03c3\u03c4\u03bf \u03b1\u03b5\u03c1\u03bf\u03c0\u03bb\u03ac\u03bd\u03bf, \u03c0\u03b1\u03c1\u03cc\u03bb\u03bf \u03c0\u03bf\u03c5 \u03b1\u03c5\u03c4\u03cc \u03c0\u03b1\u03af\u03c1\u03bd\u03b5\u03b9 \u03ba\u03bb\u03af\u03c3\u03b5\u03b9\u03c2 \u03c0\u03b5\u03c1\u03af\u03c0\u03bf\u03c5 <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/viewonphysics.gr\/wp-content\/ql-cache\/quicklatex.com-84fcb7d14f1e9efc0df31dea204209ac_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#52;&#53;&#94;&#48;\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"25\" style=\"vertical-align: -1px;\"\/> \u03c9\u03c2 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b7 \u03b3\u03b7 \u03ba\u03b1\u03b9 \u03ba\u03ac\u03bd\u03b5\u03b9 \u03c0\u03b5\u03c1\u03b9\u03c3\u03c4\u03c1\u03bf\u03c6\u03ad\u03c2 \u03c3\u03c4\u03bf \u03ac\u03bd\u03c9 \u03ba\u03b1\u03b9 \u03ba\u03ac\u03c4\u03c9 \u03bc\u03ad\u03c1\u03bf\u03c2 \u03c4\u03b7\u03c2 \u03c4\u03c1\u03bf\u03c7\u03b9\u03ac\u03c2 \u03c0\u03b5\u03c1\u03af\u03c0\u03bf\u03c5 <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/viewonphysics.gr\/wp-content\/ql-cache\/quicklatex.com-816302f6780ceed1e3ba96cc1fc7fbcb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#57;&#48;&#94;&#48;\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"25\" style=\"vertical-align: 0px;\"\/>. \u0395\u03c0\u03bf\u03bc\u03ad\u03bd\u03c9\u03c2 \u03b5\u03ba\u03b5\u03af\u03bd\u03bf \u03c0\u03bf\u03c5 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03b5\u03be\u03b1\u03c3\u03c6\u03b1\u03bb\u03b9\u03c3\u03c4\u03b5\u03af\u00a0 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bd\u03b1 \u03c5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9 \u03ba\u03b1\u03c4\u03ac \u03bc\u03ae\u03ba\u03bf\u03c2 \u03c4\u03bf\u03c5 \u03ac\u03be\u03bf\u03bd\u03b1 \u03c4\u03bf\u03c5 \u03b1\u03b5\u03c1\u03bf\u03c0\u03bb\u03ac\u03bd\u03bf\u03c5 \u03ba\u03b1\u03b9 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