On April 8, 2024, part of Canada will observe a total solar eclipse. When the Moon aligns perfectly between Earth and the Sun, many spectators will be plunged into temporary darkness.
Safety tips:
Only use special eclipse glasses; regular sunglasses aren't safe
Wait for 100% totality before taking off your eclipse glasses. (If you don't have eclipse glasses, wait for totality before looking at all)
Have a timer prepared on your phone set to the duration of the eclipse at your location, so you know when to put your glasses back on.
When the sun is mostly (but not fully) eclipsed, it will likely not feel painful to look at it, but it will still damage your eyes permanently.
I wouldn't rely on a timer. As soon as part of the sun starts peeking out, put your eclipse glasses back on. It is obvious when that starts happening, even if not painful.
Be careful when giving this advice out. It's easy to imagine someone hearing this and then watching the partial eclipse with one eye open, feeling impervious.
I used to think that then my brother shot a spoonful of salt in my eyes. I screamed bloody murder because I expected it to hurt and to get him in trouble for being an asshole, but surprisingly it didn't hurt at all.
Every time I see an article like this that is simple common sense (like don't stare at the sun ever) but which also needs to be said, I think of the Kids in the Hall Never Put Salt In Your Eyes sketch.
I used to think that then my brother shot a spoonful of salt in my eyes. I screamed bloody murder because I expected it to hurt and to get him in trouble for being an asshole, but surprisingly it didn't hurt at all.