Discussed general aspects of electricity. We walked the campus using refraction glasses to bend the visible spectrum and discussed common forms of electric waves, such as light waves, and their effect on our surrounding environment. Reviewed diseases and disorders of the skin and discussed the impact of polarity on the skin and bacteria when high-frequency alternating currents are applied via gas-filled glass tubes. Demonstrated the use of a mobile high-frequency machine on Bella's skin and she practiced on a micro level on herself, 1 student, 1 teacher and 1 admin. personell