Hand-held gratings for class to view Hg, Ne discharge tubes.

7B10.10 • E+15+25

diagram for demo

Up to 80 hand-held 19,050 Lines-per-inch transmission diffraction gratings can be passed out to the class. The student holds the grating close to an eye and views the line spectrum of various different gas discharge tubes: Mercury, Neon, and Hydrogen. The lines are easily visible when the room lights are turned out.

Related Demos

7B10.11 Arc lamp spectra from NaCl, CaCl2, SrCl soaked rods.
E+15+0 First and second order transmission gratings, with arc lamp. E+15+1 Reflection grating with arc lamp. E+15+5 Arc lamp spectra from NaCl, CaCl2, SrCl soaked rods. E+15+10 Mercury spectrum using slit and grating, includes UV lines. E+15+12 Wall chart of mercury spectrum. E+15+13 Applet: transmission and absorption spectra of all the elements E+15+15 Absorption spectrum of Na using arc lamp, slit and grating. E+15+20 Diffraction patterns of various gratings using He-Ne laser. E+15+30 Applet: Neon Lights & Other Discharge Lamps E+15+35 Applet: Tim's Grating