How and where to get certified glasses to see the total eclipse in August for free?
The ONCE and the Government are distributing two million units. Many establishments give them away: this is how they check that they are approved.
No home remedy works. Homologated glasses are the only safe protection to enjoy the eclipse on August 12. They will also be necessary to look directly at the Sun in places where the eclipse will only be partial.
To avoid serious eye injuries, homologated glasses are the only protection that works, in contrast to the still widespread beliefs that there are home methods that also work (such as X-rays, photographic negatives or smoked glass). Solder filters that protect do not provide the adequate sharpness to properly observe the eclipse.
Translated by urgent.news from El Pais's report; automated translation may contain errors. Machine-written — it may contain errors, so check the original before relying on it.