Turn away after two or three minutes. Look at the Sun through a long telescope. Cast an image through a pinhole onto a screen. Blink often until your eyes get used to the light.
Which method is the safest way to watch an eclipse of the Sun?

Options:
- Turn away after two or three minutes.
- Look at the Sun through a long telescope.
- Cast an image through a pinhole onto a screen.
- Blink often until your eyes get used to the light.

Cast an image through a pinhole onto a screen.