It is unclear what exactly is being asked for in this question. However, assuming that the question is asking for information about a welding mask that can be used to view an eclipse, here is some information:
A welding mask, also known as a welding helmet, can be used to view an eclipse safely. However, not all welding masks are suitable for this purpose. The mask must have a shade rating of at least 12, and ideally 14, to provide adequate protection for viewing an eclipse.
Positive:
- A welding mask can be used to view an eclipse safely.
Negative:
- Not all welding masks are suitable for viewing an eclipse.
- The mask must have a shade rating of at least 12, and ideally 14, which may limit the options available.
Ingredients or materials:
- The materials used in a welding mask can vary, but they typically include a hard outer shell, a cushioned inner lining, and a filter lens made of tinted glass or polycarbonate.
https://eclipse2017.nasa.gov/safety https://www.lincolnelectric.com/en-us/support/welding-solutions/Pages/welding-helmet-choosing.aspx
