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A Great STEM Project - This radio kit is an electronic educational kit
Specifications: Frequency Range: 100Hz to 10kHzInput Impedance: 15MΩAmbient Noise Permitted: 100dBWorking Temperature: -10℃ ~ 50℃Power Supply: 9V (6F22) battery (Not Included) Product Structures Long Probe & Short PorbeSignal LED Volume/ power switch Earphone HeadsetEnglish ManualDelicate Leather Bag Features LED light indicate the strength of signal of the active channel Quickly and accurate pinpoints noise and location of engine bad bearings
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Color: Pink Clouds
United Scientific SPTNI01 Glass Spectrum Tube, Nitrogen electronics2022 A Great STEM Project -United Scientific SPTNI01 Glass Spectrum Tube, Nitrogen The classic demonstration of spectral lines. Each tube has its characteristic spectrum when energized before a spectroscope. These tubes acquaint students with the spectra of common gasses in their pure form, as well as for demonstrating wavelength. The glass tubes are 25cm long with the capillary portion about 10cm long. An electrode is sealed in each end and attached to a metal end cap with a
