Physics for IGCSE & O level - Rays And Waves (Section 4 - No. 31)
Which of the following is a property of electromagnetic waves?
They are all visible.
They can travel through a vacuum.
They consist of oscillating electric and magnetic fields.
They do not carry energy.
הֶסבֵּר
Electromagnetic waves can travel through a vacuum and consist of oscillating electric and magnetic fields.