Question

How to teach light travels in all directions?

Answer 1

In contrast, light waves can travelthrough a vacuum, and do not require a medium. ... There is one more aspect of wave travel to consider, which applies to both sound and light waves. As a wave travels from a source, it propagates outward in all directions.

Answer 2

☆Earth revolves around the Sun. Sun revolves around Milky Way centre. Milky Way also keeps moving. All these movements are caused by gravity. Thus, all that what is formed by fermions (particles causing mass) has been affected by gravity. But photons (particles of light) are not affected by gravity. Because unlike fermions, photons are not mass particles. Thus, actually it's we who move away from photons making us feel light travels away from us. (Please correct me if am wrong anywhere in my understanding)☆