Inline SVG — EM Wave Geometry:

x (propagation) E (electric field, y-axis) B (magnetic field, z-axis) E and B are IN PHASE (peaks and zeros coincide) λ (one wavelength) $E_{0}$

Key Labels and Annotations:

• Orange curve (E): Electric field oscillation along y-axis
• Blue dashed curve (B): Magnetic field oscillation along z-axis
• x-axis: Direction of wave propagation
• $E_{0}$: Amplitude of electric field
• λ: One complete wavelength
• Critical observation: Both E and B reach their maxima at the same x-position (in phase)