{"id":399,"date":"2023-08-17T11:50:13","date_gmt":"2023-08-17T18:50:13","guid":{"rendered":"https:\/\/dornsife.usc.edu\/lecture-support-lab\/?page_id=399"},"modified":"2023-09-18T11:47:26","modified_gmt":"2023-09-18T18:47:26","slug":"wimshurst-static-machine-and-accessories","status":"publish","type":"page","link":"https:\/\/dornsife.usc.edu\/lecture-support-lab\/wimshurst-static-machine-and-accessories\/","title":{"rendered":"Wimshurst Static Machine and Accessories"},"content":{"rendered":"\n\n            \n  \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--stacking-cards \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--stacking-cards\"\n    \n      >\n\n    \n    \n            <div class=\"cards-container\">\n            \n                <div class=\"card\">\n\n                    <div class=\"title-description\">\n\n                                                      \n<div class=\"f--field f--cta-title\">\n\n    \n  <h3>\n          E.2(1) &#8211; Wimshurst Static Generator\n      <\/h3>\n\n\n<\/div>\n                        \n                                                        \n<div class=\"f--field f--description\">\n\n    \n  <p>It is an induction type machine which produces static electricity. It has 31 cm plates and high capacitance Leyden jars. At low humilities, 10-12 cm sparks can be drawn between the adjustable electrodes. The jars may also be disconnected to lower the capacitance of the system and permit a rapid sequence of sparks to be generated. Although the sparks will be of the same length (the same maximum voltage V) they will carry less charge Q. When Q is smaller it takes less time to accumulate. The next five or so items are accessories that help in demonstrating electrostatics.<\/p>\n<p>&nbsp;<\/p>\n\n\n\n<\/div>\n                        \n                    <\/div>\n\n\n                    \n                        \n                            \n<div class=\"f--field f--image\">\n\n    \n    \n    \n    \n    \n    \n              \n      <img decoding=\"async\"\n                            src=\"https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/e2_1.jpg\"\n                    sizes=\"(min-width:1024px) 23vw, (min-width:768px) 39vw, 83vw\"\n        \n                  alt=\"Wimshurst Static Generator\"\n        \n        \n                                      \/>\n\n    \n    \n  \n  \n\n<\/div>\n\n                    \n                <\/div>\n\n            \n                <div class=\"card\">\n\n                    <div class=\"title-description\">\n\n                                                      \n<div class=\"f--field f--cta-title\">\n\n    \n  <h3>\n          E.2(2) &#8211; Bell Chimes\n      <\/h3>\n\n\n<\/div>\n                        \n                                                        \n<div class=\"f--field f--description\">\n\n    \n  <p>Four metallic bells hang around a fixed one in a metal frame, as in the figure. Between these bells and the central bell are small insulated metal spheres. The whole structure is insulated. The metallic frame is connected to an electrostatic generator through a banana plug in its base. When the static machine is operated, the metal spheres keep hitting the bells due to the alternate attraction and repulsion, as they take charges from the bells by contact. It is about 30 cm tall and the bells are 10 cm for the center one and 8 cm for the four external ones.<\/p>\n\n\n\n<\/div>\n                        \n                    <\/div>\n\n\n                    \n                        \n                            \n<div class=\"f--field f--image\">\n\n    \n    \n    \n    \n    \n    \n              \n      <img decoding=\"async\"\n                            src=\"https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/e2_2.jpg\"\n                    sizes=\"(min-width:1024px) 23vw, (min-width:768px) 39vw, 83vw\"\n        \n                  alt=\"Bell Chimes\"\n        \n        \n                                      \/>\n\n    \n    \n  \n  \n\n<\/div>\n\n                    \n                <\/div>\n\n            \n                <div class=\"card\">\n\n                    <div class=\"title-description\">\n\n                                                      \n<div class=\"f--field f--cta-title\">\n\n    \n  <h3>\n          E.2(3) &#8211; Electric Whirl\n      <\/h3>\n\n\n<\/div>\n                        \n                                                        \n<div class=\"f--field f--description\">\n\n    \n  <p>Two perpendicular thin metal rods have their sharp needle point ends bent 90 degrees. They are joined in the middle by a needle bearing such that this frame rotates freely on a stand. The stand is insulated. When connected to an electrostatic generator. The frame formed by two perpendicular metal rods spins due to electrical discharges from the needles. It is 20 cm long.<\/p>\n\n\n\n<\/div>\n                        \n                    <\/div>\n\n\n                    \n                        \n                            \n<div class=\"f--field f--image\">\n\n    \n    \n    \n    \n    \n    \n              \n      <img decoding=\"async\"\n                            src=\"https:\/\/dornsife.usc.edu\/lecture-support-lab\/wp-content\/uploads\/sites\/280\/2023\/08\/e2_3.jpg\"\n                    sizes=\"(min-width:1024px) 23vw, (min-width:768px) 39vw, 83vw\"\n        \n                  alt=\"Electric Whirl\"\n        \n        \n                                      \/>\n\n    \n    \n  \n  \n\n<\/div>\n\n                    \n                <\/div>\n\n            \n        <\/div>\n    \n\n  <\/div><\/div>\n\n\n\n  \n  \n\n  \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--two-column-ctas \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--two-column-ctas\"\n    \n      >\n\n    \n      <div class=\"group\">\n\n                  \n<div class=\"f--field f--section-title\">\n\n    \n  <h2>\n          Back to Electrostatics\n      <\/h2>\n\n\n<\/div>\n      \n              <ul>\n                      <li>\n                  \n<div class=\"f--field f--link\">\n\n    \n    \n  \n<a \n  class=\"link\"\n  href= https:\/\/dornsife.usc.edu\/lecture-support-lab\/electrostatics\/\n    aria-label=\"Read more about Electrostatics\"  \n>\n    Electrostatics \n  <svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" viewBox=\"0 0 35 35\" enable-background=\"new 0 0 35 35\" width=\"25\" height=\"25\" xml:space=\"preserve\"><polygon fill-rule=\"evenodd\" clip-rule=\"evenodd\" fill=\"#000\" points=\"19.3,27.5 29.3,17.5,19.3,7.5 16.3,10.4 21.4,15.4 6.7,15.4 6.7,19.6 21.4,19.6 16.3,24.6 \"\/><\/svg>\n<\/a>\n\n\n<\/div>\n            <\/li>\n                  <\/ul>\n      \n    <\/div>\n      <div class=\"group\">\n\n                  \n<div class=\"f--field f--section-title\">\n\n    \n  <h2>\n          Back to Electromagnetism\n      <\/h2>\n\n\n<\/div>\n      \n              <ul>\n                      <li>\n                  \n<div class=\"f--field f--link\">\n\n    \n    \n  \n<a \n  class=\"link\"\n  href= https:\/\/dornsife.usc.edu\/lecture-support-lab\/electromagnetism\/\n    aria-label=\"Read more about Electromagnetics\"  \n>\n    Electromagnetics \n  <svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" viewBox=\"0 0 35 35\" enable-background=\"new 0 0 35 35\" width=\"25\" height=\"25\" xml:space=\"preserve\"><polygon fill-rule=\"evenodd\" clip-rule=\"evenodd\" fill=\"#000\" points=\"19.3,27.5 29.3,17.5,19.3,7.5 16.3,10.4 21.4,15.4 6.7,15.4 6.7,19.6 21.4,19.6 16.3,24.6 \"\/><\/svg>\n<\/a>\n\n\n<\/div>\n            <\/li>\n                  <\/ul>\n      \n    <\/div>\n  \n\n  <\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":354,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-content-detail.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-399","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - 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