Final answer:
When light travels through a different medium, it can bend or change direction due to a phenomenon called refraction.
Step-by-step explanation:
When light travels through a different medium, it can undergo various changes. One common change is that light can bend or change direction. This phenomenon is known as refraction. Refraction occurs because light travels at different speeds in different mediums, causing it to change direction as it enters or exits the medium.
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