Why do you think the wave aspect of light was discovered earlier than its particle aspect?

Sheryl -- are you answer grazing?

You're much more apt to get a response if you limit the number of questions you post and also give an indication of your attempts to answer these questions.

my computer got hung up and i clicked submit by accident more than once by accident.

The discovery of the wave aspect of light predates the discovery of its particle aspect because of the way scientific investigations progressed over time.

One of the key reasons is that the behavior of light is more easily observed and studied in terms of waves. When light interacts with objects or passes through different mediums, it exhibits wave-like behaviors such as diffraction, reflection, and interference. These wave properties can be easily observed, measured, and analyzed.

In the 17th century, experiments by scientists like Robert Hooke and Christiaan Huygens provided evidence that light behaves like a wave. Hooke conducted experiments that showed how light waves can be diffracted and Huygens formulated a wave theory of light, which explained phenomena such as reflection and refraction.

On the other hand, the particle aspect of light, also known as the photon, was not discovered until the early 20th century, when several experiments demonstrated the particle nature of light. One notable experiment was the photoelectric effect, conducted by Albert Einstein and others, which showed that light can behave as discrete packets of energy (photons) when interacting with matter.

The delayed discovery of the particle aspect can be attributed to the complexity of experiments required to observe and confirm this behavior. It required advanced technologies and experimental methods that were not available in earlier times.

Overall, the wave aspect of light was discovered earlier because its properties were more accessible and observable through simpler experiments, while the particle aspect required more advanced techniques to be fully understood.