Explain the observation made on the setup after one hour.

After one hour, the observation made on the setup will depend on the specific experiment or situation being studied.

For example, if the setup is a chemical reaction, the observation could be changes in color, temperature, or the formation of a precipitate. If the setup is a plant growth experiment, the observation could be an increase in height or the appearance of new leaves.

Overall, the observation made after one hour will provide valuable information about the progress or outcome of the experiment and help researchers draw conclusions about the factors being studied.

You have not provided any information about the setup, so I cannot explain the observation made after one hour. Please provide more context and details about the setup and the observation made.