Many processes in electromagnetism vary with time. Some of them are well known, in particular those
\nrelated to line frequencies of 50 Hz or 60 Hz such as fluctuating light output of discharge and
\nincandescent lamps. The flickers of discharge and incandescent lamps have quite different physical
\nprinciples involved, which are investigated experimentally using high-speed cameras and
\ntheoretically using simplified models. The topic is related to other phenomena such as the transient
\nbehaviour of phosphor layers covering the screen of oscilloscopes and the time-varying Lorentz force
\nacting on the filament of light bulbs. All studies are well suited for teaching selected aspects of
\nelectromagnetism and light at undergraduate level at university.<\/p>\n","protected":false},"excerpt":{"rendered":"
Many processes in electromagnetism vary with time. Some of them are well known, in particular those
\nrelated to line frequencies of 50 Hz or 60 Hz such as fluctuating light output of discharge and
\nincandescent lamps. The flickers of discharge and inca…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[178],"tags":[],"class_list":{"0":"post-69928","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-rss-fuusikaharidus","7":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/69928","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=69928"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/69928\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=69928"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=69928"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=69928"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}