People in the penumbra during a solar eclipse experience a partial solar eclipse. This means they see the Sun partially covered by the Moon.

Here's what they see:

* The Sun appears as a crescent: The Moon blocks out a portion of the Sun, leaving a crescent-shaped sliver of the solar disk visible.

* Dimming of light: The sunlight will be noticeably dimmer than usual, but not as dark as during a total solar eclipse.

* Cooler temperatures: The temperature may drop slightly due to the reduced sunlight.

Important Note: It's crucial to never look directly at the Sun during a partial solar eclipse without proper eye protection. Even during a partial eclipse, the Sun's rays can cause severe eye damage. Use certified eclipse glasses or solar viewers to safely observe the phenomenon.