Product Code:
OPTIC0041
Description:
Holographic Diffraction Grating 5.5-inches wide by 5.5-feet long
Specification:
Holographic Diffraction Grating 5.5-inches wide by 5.5-feet long -This
specially developed, high-efficiency diffraction grating is 100
times more efficient than acetate gratings. It can produce a spectrum
bright enough for vivid classroom discussions even in rooms that do not
darken. The shape of the grating surface produces a dispersion angle of
23.5 degrees and a groove separation of 19,050 lines per inch (750 lines
per mm) for a wavelength of 550 nm. The sinusoidal shape of the grating
surface places most of the light in the first order image. This shape
is embossed in a polyester plastic. It can be used to make a
spectrometer, a spectrum projector, or used with an overhead projector
to produce a projected spectrum for demonstration purposes.
Some of the gratings come with four color filters: blue, red, green, and
yellow. Used singly and in combination, you can demonstrate how light
is affected by color filters, or how objects of a certain color appear
when bathed in light of another color.
