Please correct this error. None of the above materials are safe for viewing the sun. The full explanation here:

http://solareclipse2009.wordpress.com/2009/07/11/pagasa-should-issue-an-erratum/

In fact PAGASA already changed their press release after realizing their mistake. In the PAGASA website, the article at

http://kidlat.pagasa.dost.gov.ph/agssb/astro_web/skymonth.htm#fullstory

now reads:

“Even the use of unconventional methods like viewing with X-Ray Films, sun glasses, smoked glass & photographic films and negatives, which are used in various countries to view eclipses, are also dangerous.”

Please update the blog post because what is involved here is the safety of the public.