Send the following on WhatsApp
Continue to ChatWave watching: Refraction and diffraction of waves https://mirjamglessmer.com/2018/09/19/wave-watching-refraction-and-diffraction-of-waves/
Wave watching: Refraction and diffraction of waves https://mirjamglessmer.com/2018/09/19/wave-watching-refraction-and-diffraction-of-waves/