Poll of the Day > I just did a science experiment on a five dollar bill to prove myself correct

(+) Yeah! (+)

I took a photo a few years back of the back of a US five dollar bill with my camera with an infrared filter attached at the end. The purple five disappeared, as we can see below

https://imgur.com/a/gSRXdNF

Now, I posted this online a few days ago somewhere because I thought it was interesting. I figured other people would, too. Some people may have been intrigued, but a lot of the comments were basically telling me this was basic color theory and not all that different from children's spy glasses. That didn't sit right with me, but I couldn't explain it, because I am no expert in any of this.

So this evening I took an image of a five with a different camera - one that has been converted for infrared photography - no filter. The five was purple in that image, but then, after discussing with a friend, it hit me. The image I took way back when was outside in sunlight. I could take a photo in similar conditions tomorrow with my new camera and I suspect it would behave similarly but my friend came up with an idea that worked exactly as he theorized.

I went into my laundry room, positioned my camera, the bill and two two remote controls(for their infrared light). I shut the lights off and took a long exposure clicking the remotes to introduce only infrared light(or as good I could get without being in an actual dark room), and here we go:

https://imgur.com/rS7J4pv

the five disappears but also two white strips appear. This was expected, but I have never been able to see this until now. Every denomination 5 and higher has these strips, too(but I don't think any have a purple 5 that disappears) so I'll be able to get images of those also.

And lastly, I took a photo of a fake five dollar bill I have to see how it doesn't appear any different:

https://imgur.com/OQjwgSu

Anyways, this was actually a kind of fun experiment but I am glad it worked exactly as my friend thought it might. I can also stop going crazy now because I have exactly the answer I was looking for but didn't know enough about to say.

Hot damn! Some day soon i'll image all of the notes with this method and we'll see!

the purple disappears when you purple the purple... purplexing!

destroy them with facts

So what you're saying is your attempt to replicate money has failed?