window.$adManagementConfig = window.$adManagementConfig || {}; window.$adManagementConfig.web = window.$adManagementConfig.web || {}; window.$adManagementConfig.web.keywords = {"status":"PROCESSED","sales_kw":"permittivity,vacuum,equation,material,light,ε₀,electric field influence,empty space,engineer,magnetic field,relationship,traditional understanding,physics,electromagnetism,behavior","sales_cat":"471,464","sales_safety":"GGT0"};