article_snippet: Projection: Place a pinhole or small opening in a card, and hold it between the sun and a screen – giant sheet of white paper works – a few feet away.
article_snippet: The sun can be viewed directly only when using filters specifically designed for this purpose.
article_snippet: Such filters have a thin layer of aluminum, chromium or silver on the surfaces.
article_snippet: Telescopes with solar filters: There are sun-specific telescopes available for sale - or perhaps through a local astronomy club - that are also safe for viewing a partial eclipse.
article_snippet: Here, a group wear protective glasses as a group watch the partial eclipse in Madrid .