vertically-aligned set LED, easy and dramatic demonstration of the relationship between the color and wavelength of light, spectral range of each LED can be investigated with spectrometer, or just viewed for comparisons with each other
LED Name Badge Kit, Create a fun light up name badge in minutes with this simple science project, Colour: Blue, Parts included: Acrylic Blank Name Badges, LEDs, Batteries, Safety Pins, Stickers, Ever wonder how fancy businesses and hotel create cool looking
Leg skeleton, model, realistic anatomical replica of the human, wire mounted, slightly flexible through toes and ankle joint, knee joint also flexible, Weight:1 kg
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