Recent content by LightningInAJar

Thanks. Hopefully eveeything gets funded again soon.

What is there website? Same type of sun images comparable to a telephoto lens and solar filter?

https://sdo.gsfc.nasa.gov/data/ Since the government shutdown this site stopped updating photos of the sun and now they seem to have server issues. I like looking at the day to day photos of the sun, but they still haven't gotten up and running again. Does anyone know when they might be back to...

The one I got was half a circle so flat on one side and convex on the other. Is the version in your picture what I'm looking for?

That is with the laser level giving a somewhat vertical line beam?

That is interesting. How much light do you think gets absorbed by the mug? I wish I could visualize how that happened. Looks like you reflected 90 degrees off of it?

I initially got a cylindrical lens on Amazon for under $8. It didn't work at all.

What is the least expensive solution without and with moving parts? I already returned a useless lens to Edmund Optics. I don't want to spend more than needed.

So basically a handheld barcode scanner?

No smoky medium. I would like to create a plain of laser light to take video of rain water or snow falling through it as a little art project.

I would like to fan out a laser pointer's beam into a sheet of light, so basically stretch it along a single axis so it creates a plain. I wasn't sure if a cylindrical lens was the right tool for the job? And I figure I might need a few laser pointers all piped into it to ensure enough light is...

That's cool. I'm not emphasizing food as much as history, social norms, and day to day life.

Does there exist an online forum where people from countries around the world discuss their cultures, foods, language, etc?

Interesting article. Thanks.

Any gerontology people here? I was wondering if narrowing of one or both carotid arteries to a concerning degree is common in those at age 80 and older? Or is that a less than say 5% of the older population type thing?