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University physics experiment instrument

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University physics experiment instrument

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Laser photoelectron

Modern comprehensive

Grating spectrometer

Interference diffraction polarization

Photoelectric element characteristics

Optical holography

Optical measurement

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Interference diffraction polarization

YGS-2 Portable Michelson Demonstrator / Equal Inclination and Equal Thickness Interference Demonstrator

YGS-2 Portable Michelson Demonstrator / Equal Inclination and Equal Thickness Interference Demonstrator

The Michelson interferometer is a crucial instrument in physics—it not only confirmed Einstein’s postulate of the constancy of the speed of light, but also demonstrated that light can propagate and exhibit interference without requiring a medium—meaning that the so-called "ether," once thought to permeate space, does not exist. Yet, this groundbreaking discovery simultaneously gave rise to a lingering puzzle in physics (often referred to as "a single dark cloud"): if there’s no ether—no medium—how exactly does light travel? And more specifically, how does light produce interference in the first place? As Albert Einstein once remarked, "I’ve always regarded Michelson as an artist among scientists; his greatest joy seemed to stem from the sheer elegance of the experiment itself and the masterful precision of the methods he employed." To scientists, the Michelson interferometer is not just a scientific tool—it’s also a remarkable work of art. For both functionality and aesthetic appeal, the LGS-2 portable Michelson product comes encased in a sleek, transparent acrylic display box, offering dual protection: it shields the instrument from dust while transforming it into a captivating piece of art. After all, this device aims to balance practical utility with artistic value.

YGS-4 Michelson Interferometer

YGS-4 Michelson Interferometer

This Michelson interferometer adopts a platform design, which makes it easy to add the research substance into the optical path. It can be used in physical optics experiments to observe isometric interference, isometric interference and white light interference. It can measure the wavelength of monochromatic light, the wavelength of sodium and yellow double lines, the refractive index of transparent medium flakes and air, etc. It is an ideal instrument for studying such experiments.

YGS-4A Fabry-Perot Interferometer

YGS-4A Fabry-Perot Interferometer

The instrument is designed by using the principle of multi-beam interference, which can obtain very fine and sharp interference fringes. It has always been an effective tool for length calculation and study of spectral hyperfine structure. The principle of multi-beam interference also has important applications in laser and optical thin film theory, and is the basic structure for making interference filters and laser resonance in optical instruments.

YGS-4B Newton's Ring Experiment Instrument

YGS-4B Newton's Ring Experiment Instrument

Newton's ring experiment instrument is composed of a plano-convex lens with a large radius of curvature and an optical plane glass. Observation with a microscope, you can clearly see that the center is a small dark spot, surrounded by many concentric rings with gradually decreasing width between light and dark. This is the equal thickness interference fringe, which is called Newton's ring.

YGS-4C thermal expansion tester

YGS-4C thermal expansion tester

The instrument is heated by electrothermal method, which is a precise measurement instrument for the linear thermal expansion coefficient of solids, and can quantitatively detect the thermal expansion and cold contraction characteristics of various solids. The linear expansion of the metal sample drives the plane mirror, and the Michelson interference optical path changes the interference fringes due to the change of optical path difference. The length change of the sample is measured, and then the linear expansion coefficient is measured.

YGS-5 Michelson and Fabry-Perot Interferometers

YGS-5 Michelson and Fabry-Perot Interferometers

The instrument is a more comprehensive and optimized product realized by perfectly combining Michelson and Fabry-Perot interferometers. It can observe various interference phenomena: equal inclination interference, equal thickness interference and white light interference. Determination of multi-beam interference sharp ring, transparent medium sheet thickness, coating thickness and air refractive index; Determination of wavelength difference between adjacent spectral lines and observation of fine structure of spectral lines.

YGS-6 precision interferometer

YGS-6 precision interferometer

The instrument can carry out Michelson interference, Fabry-Perot interference, prism interference and lens interference experiments. The design of the instrument is exquisite and the integrated structure greatly reduces the experimental adjustment time and improves the efficiency. At the same time, all structural fixing parts are fixed on a thick and heavy small platform, which can effectively prevent the influence of vibration on the experiment. The experiment can be easily converted between experiments. The operation is simple and the content is rich. It is an ideal combined interference experimental instrument.

YGS-23 piezoelectric ceramic characteristics experimental instrument

YGS-23 piezoelectric ceramic characteristics experimental instrument

The instrument is based on Michelson interferometer and uses laser interference method to observe and study the piezoelectric characteristics of piezoelectric ceramics, and obtain the distribution of the interference field light intensity, so as to have a deeper understanding of the principle of Michelson interferometer, and also have a deep understanding of the characteristics of piezoelectric ceramics and the measurement means and methods of small displacement.

$YYS-4 diffraction light intensity automatic recorder$

YYS-4 diffraction light intensity automatic recorder

The experimental equipment system is mainly composed of experimental light source, diffraction plate, light intensity recorder, computer, operating software and other parts. The experimental results are displayed through the computer interface, which can be used as an optical platform attachment or as an experiment alone. The system has a photoelectric sensor to measure the light intensity, a high-precision displacement sensor-a grating ruler to measure the displacement, and quantitatively and accurately measure the diffraction light intensity distribution.

$YYS-4A interference diffraction experiment instrument$

YYS-4A interference diffraction experiment instrument

The experimental equipment system is mainly composed of experimental light source, diffraction plate, light intensity recorder, computer, operating software and other parts. The experimental results are displayed through the computer interface, which can be used as an optical platform attachment or as an experiment alone. The system has a photoelectric sensor to measure the light intensity, a high-precision displacement sensor-a grating ruler to measure the displacement, and quantitatively and accurately measure the diffraction light intensity distribution.

$YYS-5 diffraction light intensity automatic recording device$

YYS-5 diffraction light intensity automatic recording device

The experimental equipment system is mainly composed of experimental light source, diffraction plate, light intensity recorder, computer, operating software and other parts. The experimental results are displayed through the computer interface, which can be used as an optical platform attachment or as an experiment alone. The system does not have a grating ruler and other institutions, with a photoelectric sensor to measure the intensity of light, quantitative and accurate measurement of the distribution of diffraction light intensity.

$YYS-6 diffraction light intensity experimental system$

YYS-6 diffraction light intensity experimental system

The experimental system is manual and has the following characteristics: stable performance, convenient operation, intuitive experimental results and accurate readings; the use of photocells as detectors, suitable for physical experiments, the use of this device through the Fraunhofer single slit, multi-slit, round hole and other diffraction intensity point by point measurement, hand-drawn diffraction pattern of the light intensity distribution curve, to enhance the understanding of experimental technology and analysis capabilities.

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laser photoelectron
modern comprehensive
grating spectrometer
interference diffraction polarization
photoelectric element characteristics
optical holography

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