Pioneer CDJ-3000 and DJM-A9 DJ equipment
It is two professional DJ equipment introduced by PioneerDJ company, which are widely used in clubs and professional DJ performances as multi-function players and mixers. CDJ-3000 is the flagship multifunction player, inheriting and developing the classic design of the CDJ series. Equipped with high-performance MPU, has a 9-inch touch screen, supports a variety of audio formats. DJM-A9 is a 4-channel professional DJ mixer, which inherits the advantages of DJM-900NXS2 and has been upgraded on this basis. The combination of the two devices gives DJs more flexibility in creating music.
Geiger Miller counter
The Geiger M ü ller counter, also known as the Geiger counter, is a counting instrument specifically designed to detect the intensity of ionizing radiation (alpha particles, beta particles, gamma rays, and X-rays). Using an inflatable tube or chamber as a probe, when the voltage applied to the probe reaches a certain range, each pair of ions produced by ionization of the radiation inside the tube can amplify and generate an electric pulse of the same size, which is recorded by the connected electronic device, and thus measure the number of rays per unit time.
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