This is excellent advice! I agree wholeheartedly. Just to add one nuance, this is only needed for the partial eclipse. If you are viewing the total eclipse, us

This is excellent advice! I agree wholeheartedly. Just to add one nuance, this is only needed for the partial eclipse. If you are viewing the total eclipse, use the pinhole projector for the partial phases. But during totality only, it is perfectly safe to view the solar corona with the naked eye, even with binoculars. I went into more detail elsewhere in this thread; search the page for my username for more info.