Final answer:
Jonathan's claim that light is always the same is incorrect; light characteristics can vary with the source and medium. Fluorescent bulbs show flickering under certain conditions, unlike constant car headlights. Special relativity indicates the speed of light is constant, but properties like wavelength and frequency can change.
Step-by-step explanation:
I disagree with Jonathan’s claim that light is always the same, regardless of the source. This is because light can have different characteristics depending on its source. For instance, a fluorescent light bulb emits light that, when interrupted by a moving object like a hand, can appear to flicker, which is different from the continuous beam of light from car headlights, which typically use a direct current source.
Within our lesson on special relativity, we learned that although the speed of light in a vacuum is constant for all observers, the light's properties, such as wavelength and frequency, can change depending on the medium through which it travels. This effect is seen in the concept of refraction, where light slows down when entering a medium with a refractive index greater than 1, resulting in the bending of light rays.