An electromagnetic wave going through vacuum is described by E=E0sin(kx−ωt);B=B0sin(kx−ωt). Then An electromagnetic wave going through vacuum is described by E=E0sin(kx−ωt);B=B0sin(kx−ωt). Then June 9, 2021 Category: Cengage NEET by C.P Singh , Chapter 10 - Electromagnetic Waves , Part 2 ,