{"id":400,"date":"2020-07-15T12:28:50","date_gmt":"2020-07-15T10:28:50","guid":{"rendered":"https:\/\/mekruphy.com\/de\/experimentiersatz-h-bestimmung\/"},"modified":"2023-04-04T14:41:21","modified_gmt":"2023-04-04T12:41:21","slug":"experimentiersatz-h-bestimmung","status":"publish","type":"page","link":"https:\/\/mekruphy.com\/en\/products\/physics\/optics\/experimentiersatz-h-bestimmung\/","title":{"rendered":"Experiment set DETERMINING PLANCK&#8217;S CONSTANT h"},"content":{"rendered":"\n<div class=\"wp-block-advgb-adv-tabs advgb-tabs-wrapper advgb-tab-horz-desktop advgb-tab-vert-tablet advgb-tab-stack-mobile advgb-tabs-6c94d11a-5679-4954-9d9a-81df07c0d954\" data-tab-active=\"0\"><ul class=\"advgb-tabs-panel\"><li class=\"advgb-tab\" style=\"background-color:#e0e0e0;border-style:solid;border-width:1px;border-radius:10px\"><a id=\"\" href=\"#advgb-tabs-tab0\" style=\"color:#fff\"><span>Description<\/span><\/a><\/li><li class=\"advgb-tab\" style=\"background-color:#e0e0e0;border-style:solid;border-width:1px;border-radius:10px\"><a id=\"\" href=\"#advgb-tabs-tab1\" style=\"color:#fff\"><span>Contents<\/span><\/a><\/li><li class=\"advgb-tab\" style=\"background-color:#e0e0e0;border-style:solid;border-width:1px;border-radius:10px\"><a id=\"\" href=\"#advgb-tabs-tab2\" style=\"color:#fff\"><span>Images<\/span><\/a><\/li><\/ul><div class=\"advgb-tab-body-wrapper\" style=\"border-style:solid;border-width:1px;border-radius:10px\">\n<div class=\"wp-block-advgb-tab advgb-tab-body-container\"><div class=\"advgb-tab-body-header advgb-tab-class-\">Description<\/div><div class=\"advgb-tab-_bf82dc-18 advgb-tab-body\" aria-labelledby=\"advgb-tabs-tab0\">\n<h2 class=\"wp-block-heading\"><strong>Easy to use<\/strong><\/h2>\n\n\n\n<p>With this compact apparatus it is extremely easy for students to do experiments themselves to determine Planck\u2019s constant using the stopping potential method with high accuracy. This is achieved by means of some special technology in which only the frequency of the maximum light wavelength output by the LED contributes to the result. This makes the five LEDs supplied act as monochromatic sources of light with accurately defined wavelengths.<\/p>\n\n\n\n<p>The LED sockets are equipped with special couplings which ensure they are screened from all external light. With the help of two potentiometers for coarse and fine adjustment of the photoelectric current in the nA (nanoamp) region plus two four-decade displays, the photoelectric current can easily be calibrated to zero and the corresponding stopping potential can then be read off. It is also possible to demonstrate by this means that the intensity of the light has no effect on the kinetic energy of the photo-electrons.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Various evaluation methods<\/strong><\/h3>\n\n\n\n<p>First measurements can be plotted. The gradient of the resulting straight line can then be used to obtain the value of Planck\u2019s constant. At the same time, the work function for the cathode material can also be determined. Both these two values can also be obtained purely by calculation with the help of a spreadsheet program.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-advgb-tab advgb-tab-body-container\"><div class=\"advgb-tab-body-header advgb-tab-class-\">Contents<\/div><div class=\"advgb-tab-_356d18-fc advgb-tab-body\" aria-labelledby=\"advgb-tabs-tab1\">\n<p>19.10.00&nbsp; Compact equipment for the determination of <em>h<\/em><\/p>\n\n\n\n<p>04.09.00&nbsp; 2 Experiment lead, 75 cm<\/p>\n\n\n\n<p>19.20.10&nbsp; LED unit, 472 nm<\/p>\n\n\n\n<p>19.20.20&nbsp; LED unit, 505 nm<\/p>\n\n\n\n<p>19.20.30&nbsp; LED unit, 525 nm<\/p>\n\n\n\n<p>19.20.40&nbsp; LED unit, 588 nm<\/p>\n\n\n\n<p>19.20.50 &nbsp;LED unit, 611 nm<\/p>\n\n\n\n<p>19.20.60&nbsp; Protective cap for photocell<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Additionally required:<\/h3>\n\n\n\n<p>00.05.10&nbsp; Low voltage power supply MKS 2.4<\/p>\n\n\n\n<p>or<\/p>\n\n\n\n<p>00.05.20&nbsp; Low voltage power supply MKS 3.1<\/p>\n\n\n\n<p><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-advgb-tab advgb-tab-body-container\"><div class=\"advgb-tab-body-header advgb-tab-class-\">Images<\/div><div class=\"advgb-tab-_93c79b-f9 advgb-tab-body\" aria-labelledby=\"advgb-tabs-tab2\">\n<div class=\"wp-block-essential-blocks-image-gallery\"><div class=\"eb-parent-wrapper eb-parent-eb-image-gallery-2n6b61k \"><div class=\"eb-gallery-img-wrapper eb-image-gallery-2n6b61k masonry overlay-bottom caption-style-0  \" data-id=\"eb-image-gallery-2n6b61k\"><a href=\"https:\/\/mekruphy.com\/en\/wp-content\/uploads\/2023\/04\/h-Best_1.jpg\" id=\"eb-gallery-img-content\" data-fslightbox=\"gallery\" data-type=\"image\" class=\"eb-gallery-img-content eb-filter-img-\"><span class=\"eb-gallery-link-wrapper\"><img decoding=\"async\" class=\"eb-gallery-img\" src=\"https:\/\/mekruphy.com\/en\/wp-content\/uploads\/2023\/04\/h-Best_1.jpg\" image-index=\"0\"\/><\/span><\/a><a href=\"https:\/\/mekruphy.com\/en\/wp-content\/uploads\/2023\/04\/h-Best_3-768x251-1.jpg\" id=\"eb-gallery-img-content\" data-fslightbox=\"gallery\" data-type=\"image\" class=\"eb-gallery-img-content eb-filter-img-\"><span class=\"eb-gallery-link-wrapper\"><img decoding=\"async\" class=\"eb-gallery-img\" src=\"https:\/\/mekruphy.com\/en\/wp-content\/uploads\/2023\/04\/h-Best_3-768x251-1.jpg\" image-index=\"1\"\/><\/span><\/a><a href=\"https:\/\/mekruphy.com\/en\/wp-content\/uploads\/2023\/04\/h-Best_2.jpg\" id=\"eb-gallery-img-content\" data-fslightbox=\"gallery\" data-type=\"image\" class=\"eb-gallery-img-content eb-filter-img-\"><span class=\"eb-gallery-link-wrapper\"><img decoding=\"async\" class=\"eb-gallery-img\" src=\"https:\/\/mekruphy.com\/en\/wp-content\/uploads\/2023\/04\/h-Best_2.jpg\" image-index=\"2\"\/><\/span><\/a><\/div><\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n<style class=\"advgb-styles-renderer\">.advgb-tabs-6c94d11a-5679-4954-9d9a-81df07c0d954 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