Final answer:
Devices used to observe a solar eclipse reduce the light that reaches your eyes, and astronomers use filters or devices to analyze the light. Safe observation requires the use of proper filters.
Step-by-step explanation:
Devices used to observe a solar eclipse reduce the light that reaches your eyes.
Astronomers use filters or devices that spread the light out into its full rainbow of colors. These instruments allow them to measure individual lines in the spectrum and analyze the light.
For safe observation, it is recommended to use proper filters such as welders' goggles or specially designed eclipse glasses.