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Modeled to firmly hold the diffraction grating and scale, unlike other models which tape the grating and scale to the body of the spectroscope. The results are a brighter easier to see readings to measure wavelengths against a scale so that a user can collect numeric wavelength data. Common uses for this spectroscope are measuring spectra emitted from charge gas tubes, flame tests, as well as some basic astronomy applications. The spectroscope works by light entering a slight which then a view observes the light a diffraction grating and see through the diffraction grating to a wavelength scale.
Customer
Reviewed in the United States on February 26, 2025
It was excellent for demonstrating basic spectroscopy in understanding space telescopes.
B- Israel
Reviewed in the United States on January 15, 2025
It has a great design and I was able to view the spectrum of space objects. The only problem is that my little kids moved the eye piece out of the way and now its not working... Careful with the little people! Its not a toy it's an instrument
Aoxide
Reviewed in the United States on July 2, 2024
I needed to see if some red LED lights I had would be safe to use in my film developing lab - orthochromatic black and white film isn't sensitive to red light, but the light has to be very red - 600nm on up.Digital spectrometers are really expensive. But all I needed to see is if some lights I had were putting light out below that 600nm level.I wasn't sure if this spectrometer would be useful at all, given how cheap it was compared to all the other ones out there.You know what? It worked great for a rough estimate and let me quickly see that my red LED lights were far more wide spectrum than I thought and definitely not film safe.I highly recommend doing the mod with tinfoil to make the slit you look at the light with much thinner. (not the slit that allows the number scale to be backlit). This helps a bunch with getting a clearer view of the spectral lines. Took me about 30 seconds with some scissors, painter's tape and tinfoil.
Customer
Reviewed in the United States on March 16, 2024
Worth the $10 to experiment and see what various lights look like. I don’t know why the directions specifically tell you to use a fluorescent light, but as you can see from the photos it’s the only one that looks different from the other lights, as it has distinct spectral bands due to atomic emissions, instead of the broad spectrum all the other lights share. The full spectrum grow lights (second photo) seem very similar to the rest of my lights—daylight, random led, random incandescent. There’s lots of photo variability due to me trying to hold my phone and the spectroscope up to the light to take the photo in midair.
Radams
Reviewed in the United States on October 16, 2024
I ordered these spectroscopes for a chemistry lab and they work great! Arrived quickly and in new condition.
Dave
Reviewed in the United States on August 20, 2023
This is not worth it, I didn't expect much having read reviews, needing to be modified and so on, however I found out why people use their cameras to see inside the device as the images of scale and numbers are illegible. I only wanted it to experience seeing the light spectrum and having that shown on a readable scale. It is junk, toy, garbage as most said, that is unless you are going to improve it by taking apart and only using a camera to read the scale.
Customer
Reviewed in the United States on October 9, 2023
Not great, hard to read the wavelength, but I didn't expect much for $10.It is basically a diffraction grating, a scale, a slit, and plastic to hold them.It _can_ show if an LED or fluorescent light source has gaps in its spectrum.I was hoping to see where the absorbtions were in some colored solutions,and that is too hard to read. Oh well.
Russell Kurtz
Reviewed in the United States on January 20, 2023
To start, this is not a professional spectrophotometer or even spectrometer. (Did you expect one at this price?) It is a spectroscope, a lightweight device you can look through and see the colors emitted by an object. I turned it on a Soraa LED lamp (image above); Soraa makes the best such lamps. Most inexpensive LED lamps will have a bright emission line somewhere near 450 nm (4.5 on the scale shown), then a broad emission spectrum (the conversion phosphor) from around 580-650 nm. This has five visible lines: 435 nm (the wavelength of the driving LED), 485 nm (cyan), 535 nm (green), 575 nm (yellow), and 600 nm (red). These numbers came from reading the spectroscope. Being an optical scientist, I was sure these were inaccurate, since I had thought Soraa's green phosphor was at 550 nm. It turns out the spectroscope was right.This is actually the second of these spectroscopes I have purchased. I thought I had broken my previous one, because if I looked at the LED light in my office with the spectroscope, I didn't see anything near the scale, but did see a spectrum off to the side. The side spectrum is always there, and should duplicate the spectrum by the scale. I couldn't see the spectrum from my lamp because the driving LED is at 405 nm (my glasses have a 405-nm blocking additive for this reason) and the broad phosphor spectrum is too dim. When I look at my monitor screen with the spectroscope I see three phosphor emissions, as I should; when I look at sunlight reflected from a white paper (NEVER look directly at the sun or at a laser with--or without--the spectroscope) there is a continuous spectrum.Overall, this is somewhat more than an educational toy, but definitely less than a professional instrument. At the price of $10-$15, though, you can't really go wrong. And, as it turns out, the accuracy is far better than I had thought.
Robert Bouchard
Reviewed in Canada on August 6, 2022
Simple and easy,but a bit hard to see the scale...might not be a calibrated tool but give an idea...
Howard
Reviewed in the United Kingdom on June 23, 2020
It works. Fascinating differences between spectra of 'white' artificial lights. Crudely made: needs a finer intake slit, less internal reflection and a lens to view through. But you can actually read off the Angstrom wavelengths, more or less. Feasible to fix these things yourself - a bit of extra science!
jtlenaghan
Reviewed in the United Kingdom on November 1, 2019
It's OK for a toy. But the slit has to be a bit narrower to be able to see 5nm separation!
Carl Garon
Reviewed in Canada on July 11, 2018
Malgré que le spectre ne soit pas très lumineux, pour le prix c'est quand même ok. J'ai testé la précision de l'échelle avec 3 lasers. À 410nm il donne 415, à 530nm el donne 525 et à 650nm il donne 640.Voici une vidéo sur youtube qui indique comment mesurer précisément la longueur d,onde d'un laser avec un "diffracting grating".Although the spectrum is not very bright, for the price it's still ok. I tested the accuracy of the scale with 3 lasers. At 410nm it gives 415, at 530nm it gives 525 and at 650nm it gives 640.Here is a video on youtube that shows how to accurately measure the wavelength of a laser with a "diffracting grating".
Sergei
Reviewed in India on June 14, 2017
A lot of fun (looking at the spectra of tube lights or of the light passing through colored solutions).
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