{"id":2012,"date":"2016-11-28T11:29:25","date_gmt":"2016-11-28T09:29:25","guid":{"rendered":"https:\/\/stwww1.weizmann.ac.il\/lasers\/?p=2012"},"modified":"2017-07-30T14:18:25","modified_gmt":"2017-07-30T11:18:25","slug":"%d7%93%d7%95%d7%92%d7%9e%d7%90-7-9-%d7%9e%d7%99%d7%a7%d7%95%d7%93-%d7%a7%d7%a8%d7%99%d7%a0%d7%aa-%d7%9c%d7%99%d7%99%d7%96%d7%a8-%d7%a0%d7%90%d7%95%d7%93%d7%99%d7%9e%d7%99%d7%95%d7%9d-%d7%99%d7%90","status":"publish","type":"post","link":"https:\/\/stwww1.weizmann.ac.il\/lasers\/?p=2012","title":{"rendered":"\u05d3\u05d5\u05d2\u05de\u05d0 7.9: \u05de\u05d9\u05e7\u05d5\u05d3 \u05e7\u05e8\u05d9\u05e0\u05ea \u05dc\u05d9\u05d9\u05d6\u05e8 \u05e0\u05d0\u05d5\u05d3\u05d9\u05de\u05d9\u05d5\u05dd \u05d9\u05d0\u05d2"},"content":{"rendered":"<p>\u05d4\u05e1\u05e4\u05e7\u05d5 \u05e9\u05dc \u05dc\u05d9\u05d9\u05d6\u05e8 \u05e0\u05d0\u05d5\u05d3\u05d9\u05de\u05d9\u05d5\u05dd &#8211; \u05d9\u05d0\u05d2 \u05d4\u05d5\u05d0 50 \u05d5\u05d5\u05d0\u05d8.<\/p>\n<p>\u05e7\u05d5\u05d8\u05e8 \u05d4\u05d0\u05dc\u05d5\u05de\u05d4 \u05e9\u05dc\u05d5 6 \u05de&quot;\u05de.<\/p>\n<p>\u05d4\u05ea\u05d1\u05d3\u05e8\u05d5\u05ea \u05d0\u05dc\u05d5\u05de\u05ea \u05d4\u05e7\u05e8\u05d9\u05e0\u05d4 2 \u05de\u05d9\u05dc\u05d9\u05e8\u05d0\u05d3\u05d9\u05d0\u05df.<\/p>\n<p>\u05de\u05de\u05e7\u05d3\u05d9\u05dd \u05d0\u05d5\u05ea\u05d4 \u05e2&quot;\u05d9 \u05e2\u05d3\u05e9\u05d4 \u05d1\u05e2\u05dc\u05ea \u05de\u05e8\u05d7\u05e7 \u05de\u05d5\u05e7\u05d3 \u05e9\u05dc 5 \u05e1&quot;\u05de.<\/p>\n<p><span style=\"color: #804000\"><strong>\u05d7\u05e9\u05d1:<\/strong><\/span><\/p>\n<ol>\n<li>\u05de\u05d4\u05d9 \u05e6\u05e4\u05d9\u05e4\u05d5\u05ea \u05d4\u05d4\u05e1\u05e4\u05e7 \u05e9\u05dc \u05d4\u05e7\u05e8\u05d9\u05e0\u05d4 \u05dc\u05e4\u05e0\u05d9 \u05d4\u05e2\u05d3\u05e9\u05d4.<\/li>\n<li>\u05de\u05d4\u05d5 \u05e7\u05d5\u05d8\u05e8 \u05d4\u05db\u05ea\u05dd \u05d1\u05de\u05d5\u05e7\u05d3 \u05d4\u05e2\u05d3\u05e9\u05d4.<\/li>\n<li>\u05de\u05d4\u05d9 \u05e6\u05e4\u05d9\u05e4\u05d5\u05ea \u05d4\u05d4\u05e1\u05e4\u05e7 \u05d4\u05de\u05ea\u05e7\u05d1\u05dc\u05ea \u05d1\u05de\u05d5\u05e7\u05d3 \u05d4\u05e2\u05d3\u05e9\u05d4.<\/li>\n<\/ol>\n<p><span style=\"color: #008000\"><strong>\u05e4\u05ea\u05e8\u05d5\u05df \u05d3\u05d5\u05d2\u05de\u05d0 7.9:<\/strong><\/span><\/p>\n<p>1. \u05e0\u05d7\u05dc\u05e7 \u05d0\u05ea \u05d4\u05e1\u05e4\u05e7 \u05d4\u05dc\u05d9\u05d9\u05d6\u05e8 \u05d1\u05e9\u05d8\u05d7 \u05d4\u05d7\u05ea\u05da \u05e9\u05dc \u05d4\u05e7\u05e8\u05d9\u05e0\u05d4:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">50 [W]\/(\u03c0*0.3<sup>2<\/sup>) = 177 [W\/cm<sup>2<\/sup>]<\/p>\n<p>2. \u05e0\u05e6\u05d9\u05d1 \u05d1\u05e0\u05d5\u05e1\u05d7\u05d4 \u05d4\u05de\u05e7\u05d5\u05e8\u05d1\u05ea \u05dc\u05e7\u05d5\u05d8\u05e8 \u05d4\u05db\u05ea\u05dd \u05d1\u05de\u05d5\u05e7\u05d3:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">d` = f\u03b8 = 0.05 [m]*2.0*10<sup>-3<\/sup> = 10<sup>-4<\/sup> [m] = 100 [mm]<\/p>\n<p>\u05e7\u05d9\u05d1\u05dc\u05e0\u05d5 \u05db\u05d9 \u05e7\u05d5\u05d8\u05e8 \u05d4\u05d0\u05dc\u05d5\u05de\u05d4 \u05d4\u05de\u05de\u05d5\u05e7\u05d3\u05ea \u05d4\u05d5\u05d0 \u05e2\u05e9\u05d9\u05e8\u05d9\u05ea \u05de&quot;\u05de.<\/p>\n<p>3. \u05e0\u05d7\u05e9\u05d1 \u05d0\u05ea \u05e9\u05d8\u05d7 \u05db\u05ea\u05dd \u05d4\u05d0\u05d5\u05e8 \u05de\u05d4\u05dc\u05d9\u05d9\u05d6\u05e8 \u05d1\u05e0\u05e7\u05d5\u05d3\u05ea \u05d4\u05de\u05d5\u05e7\u05d3 \u05e9\u05dc \u05d4\u05e2\u05d3\u05e9\u05d4:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">\u03c0*(d`\/2)<sup>2<\/sup> = 3.14*5*10<sup>-3<\/sup> [cm<sup>2<\/sup>] = 7.85*10<sup>-5<\/sup> [cm<sup>2<\/sup>]<\/p>\n<p>\u05e0\u05d7\u05dc\u05e7 \u05d0\u05ea \u05d4\u05e1\u05e4\u05e7 \u05d4\u05dc\u05d9\u05d9\u05d6\u05e8 \u05d1\u05e9\u05d8\u05d7 \u05d4\u05d7\u05ea\u05da \u05e9\u05dc \u05d4\u05db\u05ea\u05dd \u05d1\u05de\u05d5\u05e7\u05d3:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">50[W]\/(7.85*10<sup>-5<\/sup>)[cm<sup>2<\/sup>] = 6.36*10<sup>5<\/sup> [W\/cm<sup>2<\/sup>]<\/p>\n<p>\u05db\u05dc\u05d5\u05de\u05e8: <span style=\"color: #800080\"><strong>\u05e2&quot;\u05d9 \u05e9\u05d9\u05de\u05d5\u05e9 \u05d1\u05e2\u05d3\u05e9\u05d4 \u05e0\u05d9\u05ea\u05df \u05dc\u05d4\u05d2\u05d3\u05d9\u05dc \u05d1\u05e1\u05d3\u05e8\u05d9 \u05d2\u05d5\u05d3\u05dc \u05d0\u05ea \u05e6\u05e4\u05d9\u05e4\u05d5\u05ea \u05d4\u05d4\u05e1\u05e4\u05e7 \u05e9\u05dc \u05d4\u05e7\u05e8\u05d9\u05e0\u05d4 \u05dc\u05d9\u05d7\u05d9\u05d3\u05ea \u05e9\u05d8\u05d7<\/strong><\/span>.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/stwww1.weizmann.ac.il\/lasers\/?p=2017\"><img decoding=\"async\" class=\"alignnone size-full wp-image-49\" src=\"https:\/\/stwww1.weizmann.ac.il\/lasers\/wp-content\/uploads\/sites\/25\/2016\/10\/Buttons_Previous5bCircle5d.png\" alt=\"\u05db\u05e4\u05ea\u05d5\u05e8 &quot;\u05d4\u05e7\u05d5\u05d3\u05dd&quot;\" width=\"148\" height=\"54\" \/><\/a> <a href=\"https:\/\/stwww1.weizmann.ac.il\/lasers\/?p=2006\"><img decoding=\"async\" class=\"size-full wp-image-48 alignleft\" src=\"https:\/\/stwww1.weizmann.ac.il\/lasers\/wp-content\/uploads\/sites\/25\/2016\/10\/Buttons_Next-5bSquare5d.png\" alt=\"\u05db\u05e4\u05ea\u05d5\u05e8 &quot;\u05d4\u05d1\u05d0&quot;\" width=\"148\" height=\"54\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u05d4\u05e1\u05e4\u05e7\u05d5 \u05e9\u05dc \u05dc\u05d9\u05d9\u05d6\u05e8 \u05e0\u05d0\u05d5\u05d3\u05d9\u05de\u05d9\u05d5\u05dd &#8211; \u05d9\u05d0\u05d2 \u05d4\u05d5\u05d0 50 \u05d5\u05d5\u05d0\u05d8. \u05e7\u05d5\u05d8\u05e8 \u05d4\u05d0\u05dc\u05d5\u05de\u05d4 \u05e9\u05dc\u05d5 6 \u05de&quot;\u05de. \u05d4\u05ea\u05d1\u05d3\u05e8\u05d5\u05ea \u05d0\u05dc\u05d5\u05de\u05ea \u05d4\u05e7\u05e8\u05d9\u05e0\u05d4 2 \u05de\u05d9\u05dc\u05d9\u05e8\u05d0\u05d3\u05d9\u05d0\u05df. \u05de\u05de\u05e7\u05d3\u05d9\u05dd \u05d0\u05d5\u05ea\u05d4 \u05e2&quot;\u05d9 \u05e2\u05d3\u05e9\u05d4 \u05d1\u05e2\u05dc\u05ea \u05de\u05e8\u05d7\u05e7 \u05de\u05d5\u05e7\u05d3 \u05e9\u05dc 5 \u05e1&quot;\u05de. \u05d7\u05e9\u05d1: \u05de\u05d4\u05d9 \u05e6\u05e4\u05d9\u05e4\u05d5\u05ea \u05d4\u05d4\u05e1\u05e4\u05e7 \u05e9\u05dc \u05d4\u05e7\u05e8\u05d9\u05e0\u05d4 \u05dc\u05e4\u05e0\u05d9 \u05d4\u05e2\u05d3\u05e9\u05d4. \u05de\u05d4\u05d5 \u05e7\u05d5\u05d8\u05e8 \u05d4\u05db\u05ea\u05dd &hellip; <a href=\"https:\/\/stwww1.weizmann.ac.il\/lasers\/?p=2012\">\u05dc\u05d4\u05de\u05e9\u05da \u05e7\u05e8\u05d9\u05d0\u05d4  <span class=\"meta-nav\">&larr;<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[51],"tags":[],"class_list":["post-2012","post","type-post","status-publish","format-standard","hentry","category-7-2-----"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=\/wp\/v2\/posts\/2012"}],"collection":[{"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2012"}],"version-history":[{"count":6,"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=\/wp\/v2\/posts\/2012\/revisions"}],"predecessor-version":[{"id":5707,"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=\/wp\/v2\/posts\/2012\/revisions\/5707"}],"wp:attachment":[{"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2012"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2012"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stwww1.weizmann.ac.il\/lasers\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2012"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}