I made this using the instructions from this video and it works perfectly. I can point it at the sun and I can see almost all of the fraunhofer lines very well.

Thank you for posting this project really interesting

You have sooo cool labs!!!

Saved my life. Son's assignment is nearly done ! :)

All day I searching how to make a specrometer and I find you...briliant. I will give you like and subcribe right now.

this has me hungry for more.... to visit the link & look for a similar project with a vis-spectrophotometer as the end result , one that can measure A and T of the common 10mm sample cell.

LOVE YOU MIT!!!!

Excelente mini curso de optica básica, principios fundamentales.

amazing !!!

My niece & I made a spectroMeter following the guidance of the video. The end result is high quality for real usage and durable enough for a nine year old. Thank you! I am not sure who has had more fun with it me or her. Our questions: What does it mean when the colors are clear and bright vs soft and fuzzy? What do the thinner vs thicker color lines mean? What does it mean when more parts of the color are show vs one color (maybe be a repeat question but not sure)?

nice job!

How many lumens do you need to make a spectrophotometer? I want use it against subjects on internet screen not intense ligting.

There is an 8 inch discrepancy between the needed supplies and first instructions. It's 2 X 12 not 2X4 as stated initially.

After watching a few of these videos I'm dying to go to MIT. So cool.

Muchas gracias por el video! espero Salvar mi curso de Física con ese proyecto Thanks you so much, I hope to save this course and pass with this project

thank you

Is this as good as cheap Ebay handheld spectrometers?

My niece & I made a spectroMeter following the guidance of the video. The end result is a high quality for real usage and durable enough for a nine year old. Thank you! I am not sure who has had more fun with it me or her. Our questions: What does it mean when the colors are clear and bright vs soft and fuzzy? What do the thinner vs thicker color lines mean? What does it mean when more parts of the color are show vs one color (maybe be a repeat question but not sure)?

is it critical to make that tube 12 inches long? will it affect on results if i'll make it shorter or longer? i guess the answer is "yes", but which way?

High powered lasers can destroy IC´s. So I guess that it could be a good idea to diffuse them if you want to measure or use as reference. Just a thought. Search youtube for: laser camera damage

Do you think it is possible to use a similar equipment to identify the element composition of a metal surface?

This is amazing.

Thank you. 😊 I liked this video.

YESSSS

genius!

Thanks from Ajmer Rajasthan India

I wonder what 2 pieces of printer transparency thickness is in fraction of inch?

May I use a dvd-r instead cd-r?

Neat Idea but why do I have a feeling there is a MUCH easier way to assemble the spectrometer body.

nice

That's cool.

Why does he says the 4 pieces of foam core should be 2 inches by 4 inches, but points to pieces lying next to a ruler which are clearly at least 12 inches long? I guess they are supposed to be 2 inches by 12 inches.

como puedo ver este vídeo traducido al español

I will have to watch this when I have battery life. Skipping through the video, I am puzzled. they rip apart the cd, using only the clear part? I would have thought you would need the shiny stuff? Skipping through, I must be missing something.

Katey Lo What on earth is that Matlab nonsense? Did Newton use it? Or Max Planck? I doubt it. Please offer proper analog quantitative calibration on your website.

Exente curso de óptica básica.

There are 3 questions people need to answer by building, this. 1. Why not Abs 12 inch black tube instead? That would be superior. 2. What mental fixation is it with the transparency spacing of the razor blades? Why not just state it in millimeters, then offer the gap in several household items, like toothpicks or 2 razor blade wide, etc. As it is in video, I have no idea how to do the gap, as unfamiliar with item mentioned, and so rushed through this step, it might as well as been cut out. 3. Since no point in spending 2.5 hours and $20 in duct tape, foam core razorblades, gas, when any step is misunderstood, why isn't the properties of a recordable CD shown to the camera? No zoom on the clear acrylic track lines. Without this zoom shot, most users will just scratch their head and assume this is beyond comprehension. All, but those with blind faith the video maker isn't leaving some critical step out. This blind faith is further shaken when other mistakes are made, like the dimensions of the foam core. At very least, address all 4 of these in the video description, so viewers don't think themselves not understanding enough to attempt to build this. If enough people build it, hopefully an android app will emerge that can be calibrated, and used commonly. Applications from element identification, to circadian rhythms, to choosing leds, to interior design and architecture, to artist lighting, color matching, lighting sales, etc, etc. Limited by imagination. Less guesswork, less work, one tool.

look up foldable mini spectrometer

Disappointed, I thought that CD stand for circular dicroism, not for compact disk...

"Launch the phone's relevant image capture program." This needs some explaining. Turns out my built-in camera didn't do the trick. I downloaded the SpectraSnapp app for my smart phone & will try that out. Also, all the CDs I've come across are like plastic sandwiches with the reflective layer in the middle. I had to cut the CD into sections, split them apart, and THEN peel off the reflective layer with sticky tape.

Yeah sure Mack 🙄

Save ducks, don't use duck tape.

Jesus Christ, why tf is trending failing so hard?

Exente curso de óptica básica.