IEC PHOTO-ELECTRIC EFFECT STANDARD GRADUATED FILTERS
A set of 5 standard graduated filters (red, orange, yellow, green, blue) that slide into the retainer at the rear of the IEC Photoelectric Effect and Planck's Constant instrument to perform the required experiments. Each filter is marked with the highest wavelength passed.

NOTE: This is a genuine IEC product.
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Last edited 1st Nov 2023