港东科技YGP-3普朗克常量实验装�?参数-价格-中国粉体罐�/title>

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} }); function showliuyan(me, showtype){ if(showtype==0){ //$("#Content").val($("#Content").attr('placeholder')); Content= document.getElementById('PopMsgFrom').Content.getAttribute('placeholder'); document.getElementById('PopMsgFrom').Content.value=Content; } if(showtype==1){ // $("#Content").val($(me).text()); alert($(me).text()); document.getElementById('PopMsgFrom').Content.value=$(me).text(); } $(".fxp").css("display","flex"); } function close_popwin(){ $(".fxp").css("display","none"); // 关闭虚拟电话后的留言� $(".dhxj").css("display","none"); $(".dhxjbox").css("display", "none"); $(".dhxjbox2").css("display", "none"); return false; } </script>  <div class="cpjs"> <div class="cpjs_tab"> <div class="js_cpjj" style="border-bottom: 3px solid #1479d7; color: #1479d7;">产品介绍</div> <div class="js_cxd">创新炸�/div> <div class="js_xgfa">相关方案</div> <div class="js_xgzl">相关资料</div> <div class="js_yhpl">用户评论</div> <div class="js_gsdt">公司动�?/div> <div class="js_wsj">问商宵�/div> </div> <script> $(function(){ // 切换 $(".cpjs_tab a").click(function(){ $(".cpjs_tab a").css({"color":"#4F5862","border-bottom-color":"transparent"}); $(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <p><strong><span>【仪器介绍【�/span></strong></p><p><span>YGP-3<span>垊�/span><span>用于高等学校普通物理实验，通过用减速场法，测量不同波长单色光的照射下，光阴极材料的截止电压，验证爱因斯坦方程，进而测量普朗克常量的实验过程，帮助学生了解光的量子性，学习与光电效应相关的实验技术和方法、�/span></p><p><strong><span>【产品特点【�/span></strong></p><p><span>1<span>、本实验装置采用单色仪得到单色光。可连续得到不同波长的单色光，测量数据更多，更精确、�/span></p><p><span>2<span>、包含单色仪装置，可以让学生在一个实验中，增加了解单色仪的工作原理和调试方法，实验内容更丰富、�/span></p><p><span>3<span>、测试方法采用过零法。相比于拐点发引入的人为因素，采用过零法操作更简单，测试更准确、�/span></p><p><strong><span>【实验内容【�/span></strong></p><p><span>1<span>、测定光电管的伏安特性曲纾�/span></p><p><span>2<span>、作</span><span>v-U</span><span>的关系曲纾�/span></p><p><span>3<span>、用作图法或用一元线性拟合法计算出：</span></p><p><span>A <span>普朗克常野�/span><span>h</span></p><p><span>B <span>光电管阴极材料的红限频率</span><span>v</span></p><p><span>C <span>逸出办�/span><span>Ws</span></p><p><span>D <span>验证爱因斯坦方程</span></p><p><span>4<span>、测出光电管在正电压下的伏安特性曲纾�/span></p><p><strong><span>【配置及参数【�/span></strong></p><table cellspacing="0" cellpadding="2" border="1" bordercolor="#f2f2f2" width="100%"><tbody><tr><td><p><span>编号</span></p></td><td><p><span>名称</span></p></td><td><p><span>规格</span></p></td></tr><tr><td><p><span>1</span></p></td><td><p><span>光源</span></p></td><td><p><span>卤钨灯，<span>12V75W</span><span>，辐射光谰�/span><span>350~2500nm</span><span>，由开关电源供甴�/span></p></td></tr><tr><td><p><span>2</span></p></td><td><p><span>轴流风扇</span></p></td><td><p><span>DC12V<span>，供电源散热</span></p></td></tr><tr><td><p><span>3</span></p></td><td><p><span>聚光�?/span></p></td><td><p><span>由双透镜组成，透镜焦距<span>f1=50mm</span><span>＋�/span><span>f2=70mm</span></p></td></tr><tr><td><p><span>4</span></p></td><td><p><span>单色�?/span></p></td><td><p><span>光栅单色仪，波长范围<span>200~800nm</span><span>；光栄�/span><span>1200L/mm</span><span>；闪耀波长</span><span>500nm</span><span>；波长精�?#177;</span><span>3nm</span><span>，波长重复�?#177;</span><span>1nm</span><span>、�/span></p></td></tr><tr><td><p><span>5</span></p></td><td><p><span>光电箠�/span></p></td><td><p><span>光谱响应范围９�span>190~700nm </span><span>峰值波长：</span><span>400</span><span>��</span><span>20nm</span></p></td></tr><tr><td><p><span>6</span></p></td><td><p><span>测量放大�?/span></p></td><td><p><span>采用高精度集成电路构成，电流测量范围９�span>10</span><sup><span>-8</span></sup><span>~10</span><sup><span>-13</span></sup><span>A<span>六档倍率转换、�/span></p></td></tr></tbody></table><p><span>注：此配置及参数仅供参考，请以装箱单为准，如有细小变动恕不另行通知、�/span></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; font-size: 14px; margin: 10px 0 0; line-height: 26px;"> 暂无数据� </p> </div>  <div class="xgfa"> <div class="xgfa_tit"> <div> <span></span>相关方案 </div> </div> <div class="xgfa_box" style="display: block;"><div style="padding:10px;">暂无相关方案、�/div> </div> </div> <script> $(function(){ // 切换 $(".xgfa_tit_ul li").hover(function(){ $(".xgfa_tit_ul li").css({"color":"#4F5862","border-bottom-color":"transparent"}); $(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); var _index = $(this).index(); $(".xgfa_box").css("display","none"); $(".xgfa_box").eq(_index).css("display","block"); }); }); </script>  <div class="xgzl"> <div class="cxd_tit"><span></span>相关资料</div> <div class="xgzl_box"><div style="padding:10px;">暂无数据、�/div> </div> </div>  <div class="yhpl"> <div class="cxd_tit"><span></span>用户评论</div> <form id="FormComments" action="" method="post" onsubmit="return false"> <input name="SaveProComments" id="SaveProComments" type="hidden" value="yes" /> <input name="ProductID" id="ProductID" type="hidden" value="230407" /> <input name="ProQuality" id="ProQuality" type="hidden" value="10" /> <input name="ProService" id="ProService" type="hidden" value="10" /> <input name="ProUsability" id="ProUsability" type="hidden" value="10" /> <input name="ProCostperformance" id="ProCostperformance" type="hidden" value="10" /> <div class="yhpl_pf"> <div> <p>产品质量</p> <div><span id="Quality" class="stars star10"></span><span id="Quality_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> <div> <p>售后服务</p> <div><span id="Service" class="stars star10"></span><span id="Service_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> <div> <p>易用�?/p> <div><span id="Usability" class="stars star10"></span><span id="Usability_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> <div> <p>性价毓�/p> <div><span id="Costperformance" class="stars star10"></span><span id="Costperformance_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> </div> <div class="yhpl_pftit">评论内容</div> <textarea name="Comments" id="ProComments" onfocus="checklogin();" placeholder="分享产品使用经验/采购评价（不超过500字）">