Recent content by Newtons Apple

Thanks! I had to do this multiple times, but I think I finally got a good baseline result. So this is from a "Full spectrum" LED light. I confirmed that use the Blue Light with Phosphor Coating to produce their white LEDs. I bought some black poster board and cut out a pretty narrow slit on it...

Hi, So the LED that's I'm using for this experiment...they it has a plastic or glass tube around all of the led chips...will this throw off the dispersion when it hits the prism?

Haha, it's funny you mention that.....I'm working on a big paper (not academic just for fun) And it's hilarious...First I thought that the spectrometer was just busted and inaccurate..so I bought another one more expensive that when I measured the sun a full spectrum as what many suggested I...

Ahh maybe that's it...I did use sort of a focused light, but it wasn't *that* narrow...Thanks guys will give it a try!

It's actually hard to photograph, but this is what I'm using, and you can see the tiny band of yellowish on the far side, but this is from a 'white' led.

Thanks for the replies, let's set my personal experiment aside for a moment... This is according to google: RGB LEDs: These use red, green, and blue LEDs combined to create the perception of white light. Passing this through a prism will likely show the separated red, green, and blue...

Hi, So I've been really getting into color and light and I have a big question that I'm not sure if i'm thinking about correctly..but it could proven...problematic? Okay so please stay with me here as I build up to the end, I'll be stating things that I believe to be true but if anything...

So as I was waiting for a response I may be able to answer this myself... but let me run it by you and everyone... So I do a lot of astrophotography and we use filters to cut out a lot of the other light and only allow very specific bands from the spectrum to hit the camera. the issue is that...

Hi, so I've been just obsessing over color and light for a while... but I'm trying to understand something. To my knowledge there's two many methods of creating a white LED. 1. Taking a blue LED and putting some sort of phosphor like zinc on top of it, and as the blue light passes through, it...

So I love talking about space but I also hate rattling off misleading or wrong info...I'm trying to wrap my head around why the nebula we observe, only emit Hydrogen (of the alpha variety) Sulfur II and Oxygen III? Why these specific elements only? I do some astrophotography so these are the...

It just boggles my albeit simple mind... that these solitary events... a few each million years is enough to sow these elements throughout the entire universe... Maybe we live on a Planet that is so insanely lucky to get mostly all of the elements naturally in large amounts. However, would it be...

yea I see your point...but then is it just accepted that every element just happens to be present on Earth? Like we got literally all of them here in some form or fashion just seems like such a conincidence!

Hi, So I've been reading and watching things recently about the origin of the Elements in the universe... And maybe it's me just over thinking..but I just feel like my simple understanding isn't really adding up...So we have 118 elements, the last few are man made, so let's remove those from...

This is sort of a sister thread to my other thread. But I've bought a spectrometer and have been playing around with it. I pointed it at the sun on a clear day and got as expected a nice full spectrum of color with a large spike of blue: 1. My first question is.. is the spike in blue range...

Interesting.. is this a property of LED lights in general? Will all LED's have a significantly higher UV peak towards the blue then? WHy is this needed?