The term "wave of light" has different meanings depending on the context. Here are two different meanings:

1. Wave of Light in the context of baby loss awareness: The Wave of Light is a global event that takes place on October 15th every year as part of Baby Loss Awareness Week. It is a moment of remembrance for families and individuals who have experienced the loss of a child, particularly during pregnancy, childbirth, or infancy. Participants around the world light candles at 7:00 PM local time and create a wave of light that symbolizes love, support, and remembrance for these precious lives.

2. Wave of Light in the context of physics: A wave is a phenomenon where a change in a field in one place affects the field in its surroundings. For example, when you push a table, the force you apply creates a wave that propagates through the table. Light is an electromagnetic wave, which means that it is a wave of oscillating electric and magnetic fields that propagates through space. Unlike mechanical waves, such as sound waves or waves on a string, electromagnetic waves do not require a medium to propagate. Instead, they can travel through a vacuum.

In summary, the term "wave of light" can refer to a global event that honors and remembers babies who have died during pregnancy, childbirth, or infancy, or it can refer to the physical phenomenon of light as an electromagnetic wave.