Diffraction Spectroscope

Now with our own hands, we will collect two versions of the diffraction spectroscope. A spectroscope is a device that allows you to explore the spectrum of light, due to the dilution of its spectral components along a specific axis. It is possible to divide light into monochromatic waves either due to the phenomenon of dispersion or due to diffraction. In this case, we will use diffraction, since we have an excellent diffraction grating on hand - a compact disc! &Nbsp;
Wewillneedasmallcardboardbox,acompactdisc,glue,anopaquetubefortheeyepiece.
Cutoutapieceofthecompactdiscwithascissorsforthesizeofthebox:Marktheboxinsuchawaythattheeyepieceisinstalledcorrectly.Fromoptics,weknowthattheangleofincidenceisequaltotheangleofreflection.Butthiswaywewillseeawindowthroughwhichthelightwillpass,ratherthandiffractionmaxima,sowewillleaveroomtotherightofthefuturewindowline.Thenbyclosingthebox,selecttheappropriateplacetoenterthelight.Todothis,wewillcarefullypiercethehole,andobservethroughtheeyepiece.Ifintheeyepieceweseedirectlyreflectedlight,thenwegluetheholeandpierceanewonealittlefurther.Andsoonuntilalotofcoloreddotslinedupalongthelinearevisibleintheeyepiece.Thenwecutthewindow:Installalightknifefromthetworazorbladesonthewindow-sothatthenarrowestbeamoflightgetsintothebox-thisishowwewillseetheclearestpicture.Ifeverythingworkedout,thenwewillseeadilutedspectrumintheeyepiece.Ifthespectrumisnotcontinuous(forexample,fromLDSorgas-dischargelamps),thenwewillseeasetoflines.Eachlineisamonochromaticcomponent.Inthephoto,thetopmostlineisactuallydeeppurple,justthecamerahasdistortedthecolor.

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