pgreenwood (u/pgreenwood)

pgreenwood commented on Why you can't color calibrate deep space photos maurycyz.com/misc/cc/... · Posted by u/LorenDB

rtkwe · a month ago

The first one has been adjusted to bring out the contrast and saturation while the one you link is an original scan. They brought a number of different swatches like that and took a picture of a calibration array at the end to account for the effects of space exposure on the film.

pgreenwood · a month ago

The one I posted is from an original scan.

pgreenwood commented on Why you can't color calibrate deep space photos maurycyz.com/misc/cc/... · Posted by u/LorenDB

gowld · a month ago

Is there a document that explains that color chart?

This version shows different shades of colors: https://eol.jsc.nasa.gov/SearchPhotos/photo.pl?mission=AS17&...

pgreenwood · a month ago

I think we are looking at different scans. See: https://tothemoon.im-ldi.com/about

pgreenwood commented on Why you can't color calibrate deep space photos maurycyz.com/misc/cc/... · Posted by u/LorenDB

Retr0id · a month ago

The next space mission should be to leave a colour calibration chart on the moon.

pgreenwood · a month ago

Here's a shot of a color chart on the moon from Apollo 17 (AS17-137-20900):

https://tothemoon.im-ldi.com/data_a70/AS17/extra/AS17-137-20...

pgreenwood commented on Stone blocks from the Lighthouse of Alexandria recovered from seafloor archaeologymag.com/2025/0... · Posted by u/gnabgib

dr_dshiv · a month ago

It was the tallest building in the world? And it survived till the 1300s?? Wild.

pgreenwood · a month ago

This seems like an odd error for the article to make. The great pyramid in Giza is nearly 50% taller, was built nearly 2500 years earlier, and still stands today.

pgreenwood commented on Nerve pain drug gabapentin linked to increased dementia, cognitive impairment medicalxpress.com/news/20... · Posted by u/clumsysmurf

bumbledraven · a month ago

Absolutely no causal link was shown. Maybe the nerve pains for which doctors prescribe gabapentin increase the risk of dementia on their own, or maybe there is some third factor that causes both nerve pain and dementia.

pgreenwood · a month ago

Not sure why this comment is getting downvoted. The article itself states that:

> "This is an observational study, and as such, no firm conclusions can be drawn about cause and effect. The researchers also acknowledge that their study was retrospective, and they weren't able to account for dose or length of gabapentin use."

Posted by u/pgreenwood 2 months ago

Apollo 11 Technical Crew Debriefing – Tape 3 [video]youtube.com/watch?v=yTzEI...

Posted by u/pgreenwood 2 months ago

With six months until the teen social media ban, Australia still hasn't figured crikey.com.au/2025/06/13/...

pgreenwood commented on Failed Soviet Venus lander Kosmos 482 crashes to Earth after 53 years in orbit space.com/space-explorati... · Posted by u/taubek

GMoromisato · 3 months ago

My favorite Six Million Dollar Man episode is where Steve Austin had to fight a Soviet Venus rover that accidently landed on Earth. It was autonomous, obviously, and because it was designed to survive on Venus, it was nearly indestructible.

No one comes up with plots like that anymore!

pgreenwood · 3 months ago

Kenner also released a surprisingly large toy version of that probe: https://www.youtube.com/watch?v=XTWJc72p2pE

pgreenwood commented on Sycophancy in GPT-4o openai.com/index/sycophan... · Posted by u/dsr12

simonw · 4 months ago

I enjoyed this example of sycophancy from Reddit:

New ChatGPT just told me my literal "shit on a stick" business idea is genius and I should drop $30K to make it real

https://www.reddit.com/r/ChatGPT/comments/1k920cg/new_chatgp...

Here's the prompt: https://www.reddit.com/r/ChatGPT/comments/1k920cg/comment/mp...

pgreenwood · 4 months ago

There was a also this one that was a little more disturbing. The user prompted "I've stopped taking my meds and have undergone my own spiritual awakening journey ..."

https://www.reddit.com/r/ChatGPT/comments/1k997xt/the_new_4o...

pgreenwood commented on Reverse geocoding is hard shkspr.mobi/blog/2025/04/... · Posted by u/pavel_lishin

xucheng · 4 months ago

Can this be solved by storing a timestamp of the record along with precise GPS coordinates? Could we then utilize some database to compute the drift from then and now?

pgreenwood · 4 months ago

See https://spatialreference.org/

u/pgreenwood

KarmaCake day565August 12, 2013View Original