Handheld Durable Small Diffraction Spectroscope Kit Gemmology Gems (55mm Spectroscope)

Fantastic for testing spectrum of led lights for video shooting

Excellent, thank you.

Difficult to use

Not a brilliant image.

Yes, it is difficult to use; but the effect is priceless. This device is bloody difficult to see-through; but the image you might see, if you're patient, will show you just how effective is the light-source you're looking-at. Some years ago I was loaned an identical device, that was twice the size,; and the image was so easy-to-see that I was able to record it using a cheap, digital, camera. If you could point one of these devices at a human-being and get an image of their moral-spectrum, in the way that this device gives an image of spectrum of a light-source, we could bring-back hanging with a clear-conscience; never make a mistaken conviction ever again; reduce crime at a stroke; and drastically reduce the prison population. No! No! I've got that wrong, haven't I? I overlooked the fact that the prisons would be full again, in no time, with all the Politicians and Bankers. Children would denounce their parents and would negotiate for a Nine O'Clock bedtime. Mmmm!

Love it

Here is a typical spectrum of a compact fluorescent bulb. Bear in mind that the spectroscope has better resolution than the camera! E. g. The green mercury and terbium lines at around 544nm are clearly resolved by the spectroscope. I'm really pleased with the performance. Great little spectroscope. Used in conjunction with the Theremino or Spectragryph free spectroscopy programs it forms the basis of a really useful spectrometer.

イスラエルの回折格子を買っていくつか分光器を作ってみたが斜視になるとか鮮明度悪く、とても暗線なぞ 見えなかった。本品は直線視できるし鮮明で明確に輝線・暗線見えるので驚いた。宝石用途は知らなかった。 紙への反射太陽光、パソコン画面、LED、蛍光灯等の違いははっきり判る。塩は身近にあるので炎色反応を 試してみようと思っている。嵩張らないし素晴らしい商品です。

Ultra-compact ( easy to lose ? ) Works Okay. A curious bit of kit. Skimpy instructions.

Tiene una resolución aceptable para las dimensiones que tiene. La relación rendija-foco que determina la resolución para una densidad de lineas fija es suficiente para resolver algunos dobletes en lámparas de Hg-Ne. Se pueden ver con bastante claridad las líneas de absorción al apuntar al cielo nublado y puede utilizarse el segundo orden para resolver detalles en la región violeta. Recordemos que se trata de un espectroscopio y no de un espectrómetro, por lo que evidentemente carece de escala graduada. En las imágenes, una lámpara fluorescente convencional y un láser NdYAG doblado (532 nm).

I just so happen to have the temporary use of a similar pocket spectroscope made by Gem-A for comparison. This one works just as well as the more expensive Gem-A version. Good product if you know how to properly use it to identify gemstones.

I had no idea what this was but my physics minded son wanted it for Christmas. I was a bit worried when it shipped from overseas and when it got to the US, all I had for tracking was "picked up by another carrier" but sure enough, it arrived shortly after. Packaged extremely well and a nice little case for it. So my son opened this present this morning and it's been the highlight of the day. It works perfectly and is a really cool tool, even for those of us that don't understand it.