- Measure light, wavelengths and color from light sources
- Measure wavelengths from 400nm to 700nm
- Accuracy is +/- 5nm
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EISCO High Resolution Quantitative Spectroscope, 400-700 nm, +/-5nm
|Price:||$7.98 & FREE Shipping on orders over $25. Details|
Specifications for this item
|Number of Items||1|
|EAN||0787461659946 , 0849230056650|
|Item Weight||4 ounces|
|UPC||849230056650 , 787461659946|
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This is the most durable and accurate spectroscope available on the market as it 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. Have fun viewing different light sources you see every day to determine what wavelength they are actually emitting.
Top customer reviews
However, this spectroscope is basic and and could be improved. The first modification I made was narrowing the light entry slit. Then I lined the interior with a black felt because the black plastic was reflecting a lot of light. I really wish they had used an insert, cut with a laser, for the light entry slit, just something more precise then a 1/16 inch gap in the plastic shell.
But, unlike the picture, my scale was missing lines at 610 and 620 which I assume was a manufacturing defect. Also, there is no lens to help focus your eye. I needed my reading glasses to see the scale. And, the slit was of uneven thickness.
The build quality is adequate--it is plastic. But for the price it is fine. The scale is readable but takes a little getting used to in terms of learning how to aim the spectroscope to get a proper reading. Once you figure it out, it works great.
The objective opening is the right size for an iPhone 6 camera. When paired right this will allow you to record the spectra on a variety of materials and lights. Not exactly lab grade but it is inexpensive can be taken anywhere.
Obviously, it's very hard to get an accurate wavelength reading, as the spectral lines are shown on the scale at the same (wide) width of the slit. if you narrow the slit, you can get finer resolution, but in order to make it accurate you'll have to calibrate with a known wavelength source by moving the slit location.