Air cushion spring vibrator and micro-inflator pump
The air cushion spring vibrator and the microphonic air pump are used in the Mizhou Xuecun (262233), Zhucheng City, Shandong Province, Wang Faxiu, Wang Yaofu, Sun Yuxi, 2201 air cushion spring oscillator structure, as shown in Figure A. The instrument is made of a high quality light spring and a plexiglass. The air cushion guide is composed of. The slider on the air cushion has a certain mass as the vibrator, which is connected to the spring. The pointer on the slider is used to indicate the position of the vibrator. A movable ruler is fixed above the vibrator to display the position and amplitude of the vibrator. The instrument is mainly used to study the basic law of simple harmonic vibration; the relationship between the natural period and mass of simple harmonic vibration; the basic law of damping vibration; the physical law of the kinetic energy and potential energy transformation of the object, that is, the conservation of mechanical energy. The past gas source of this instrument is the skin raft, which uses the air cushion principle to float the vibrator to reduce friction. There are some defects in the actual operation: one is inconvenient, the other is unstable, and the floating time does not float, which makes the demonstration effect poor, and the phenomenon is not obvious. To this end, we have carried out the following simple transformation: the Z) C-3 type micro-sonic pump (Figure B) is used as the gas source instead of the skin. The specific operation is as follows: the rubber stopper No. 6 is along the axis direction, and the punch is used to hit 6 7mm hole, use a glass tube with a diameter of about 7~8mm and a length of about 10cm, one end is inserted into the hole of the rubber plug, and a little leaks. Put the rubber plug into the air pipe of the air pump and put the appropriate length on the other end of the glass tube. The rubber tube and the other end of the rubber tube are connected with the air inlet of the air cushion guide. As shown in the figure: after the modification, the experiment is convenient, the air flow is sufficient and stable, the friction between the vibrator and the guide rail is extremely small, the vibrator vibrates frequently, and the vibration Stable, continuous, experimental phenomena are more obvious, more accurate, and the effect is very good. The -3 type microphonic air pump was invented by Huang Yiming, senior engineer of the Petroleum Physics School of Cangzhou City, Hebei Province, and produced by the Changzhou Instrument Factory No. 4 of Cangzhou City. (The column editor Wang Bozhen) The diameter of the ring is 2rm, cn=2rn, and the above formula is the measurement formula. As long as the diameter 4 and the hair of the Newton ring are measured, it can be found to avoid the inaccuracy due to the determination of the position of the center of the circle. error. 3. The concentric rings of light and dark phase observed from the Newtonian ring interference experiment have a certain width and the spacing is not equal. The more outward, the denser the stripes. Direct observation through the microscope has the following deficiencies: (1) the pattern is small, the eyes are prone to fatigue, and it is difficult to measure accurately; (2) it is not convenient for teachers to explain, teach and demonstrate in class; (3) due to enrollment expansion, in instruments and venues Insufficient circumstances, it is not convenient for a few people to do experiments. This is a common problem in schools at present, and it is also a major problem that students think is not good for this experiment. This can be resolved if you look directly at the monitor screen. Of course this requires some advanced equipment: a CO) sensor, monitor, M7T lens and video output. The specific method is: first adjust the Newton's ring interference ring with the naked eye through the microscope, and then fix the center of the financial 7T lens to the center of the microscope eyepiece. The video signal is connected to the image generator through the video line, and input from the output port through the video line. To the monitor, it is easy to clearly observe the adjusted ring of the cattle ring interference on the monitor, which is very convenient for students to observe and measure, and is also helpful for teachers to explain. If the laboratory is equipped with //F-CCZ>H-type spectrometer teaching instrument, it can also be directly applied to Newton's interference experiment, which is economical and practical. The device schematic is as follows. -CCD sensor - reading microscope image generator monitor Temporary Fence,Pvc Portable Fence,Pvc Temporary Fence,Security Construction Fence HeBei Bosen Metal Products Co.,Ltd , https://www.bosenfence.com