Welcome to DU! The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards. Join the community: Create a free account Support DU (and get rid of ads!): Become a Star Member Latest Breaking News General Discussion The DU Lounge All Forums Issue Forums Culture Forums Alliance Forums Region Forums Support Forums Help & Search

The DU Lounge

Dear_Prudence

(472 posts) Sat Apr 6, 2024, 01:17 PM Apr 6

14

Urgent: Smoked glass danger [View all]

We attended a talk by astronomer (and author) Dean Rega, retired from the Cincinnati Observatory. I asked about smoked glass, but did not mention that I had used it as a kid in 1963 in Maine for the eclipse. He said it was unsafe, dangerous to your eyes. He also said he was astonished because no one has used it since the 1800s, which made me feel mighty old! (I'm 71, not 171, thank you!)

4 replies

= new reply since forum marked as read

Highlight:

Urgent: Smoked glass danger [View all] Dear_Prudence Apr 6 OP

There's a post on DU to a video for making a smoked glass viewer. sinkingfeeling Apr 6 #1

Several Dear_Prudence Apr 6 #2

I always used unexposed, but processed, film. dickthegrouch Apr 6 #3

National Park Service advice ... Hermit-The-Prog Apr 7 #4

Latest Discussions»The DU Lounge»Urgent: Smoked glass dang...