A visual demo of the Doppler effect

• Autores: Pangratios Papacostas
• Localización: The Physics Teacher, ISSN 0031-921X, Vol. 48, Nº. 6, 2010, pág. 420
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Most physics teachers are familiar with the standard classroom demonstration of the Doppler effect. We invite students to explain the periodic variation of the pitch produced when we swirl a sounding buzzer over our heads. Students are quick to connect this phenomenon to everyday life experiences such as listening to the sound of the siren of a fastapproaching police car or the bell of an approaching train. In addition to these aural experiences, our understanding of the Doppler effect can be strengthened with a useful visual metaphor