It's impossible to say definitively what order physicists "work" in, as it depends heavily on the specific field and the research question. However, here's a general idea of how scientific work often progresses:

1. Observation and Experimentation: Physicists begin by observing phenomena and conducting experiments to gather data.

* Example: Observing the behavior of light through different mediums, or measuring the acceleration of falling objects.

2. Theory Development: Based on the gathered data, physicists develop theoretical models and explanations to describe the observed phenomena.

* Example: Developing the theory of wave-particle duality for light, or formulating Newton's law of universal gravitation.

3. Prediction and Further Experimentation: From the theories, physicists make predictions about new phenomena or the behavior of existing systems. They then design and conduct experiments to test these predictions.

* Example: Predicting the existence of gravitational waves and developing detectors to observe them.

4. Refinement and Extension: If the predictions are confirmed, the theory is refined and extended to explain other phenomena or to address remaining questions.

* Example: Expanding the standard model of particle physics to include dark matter and dark energy.

5. Collaboration and Communication: Physicists share their findings with the scientific community through publications, presentations, and conferences. This allows for peer review, collaboration, and further development of ideas.

It's important to note that this is a simplified model. In reality, the process can be iterative and involve many different approaches. Physicists often work on multiple projects simultaneously, and the order of steps can vary depending on the specific research question.