China Wholesale Abbe imaging Factories – LCP-18 Apparatus for Measuring Speed of Light – Labor

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Introduction

The physical properties of semiconductor PN junction are one of the important basic contents of physics and electronics. This apparatus uses the physical experiment method to measure the relation between the diffusion current of PN junction and voltage, proves that this relation follows the exponential distribution law, and measures the Boltzmann constant (one of the important constants in physics) more precisely, which enables the students to learn a new method to measure the weak current. This apparatus provides a heater alternating temperature thermostat to measure the relation between PN junction voltage and thermodynamic temperature T, so as to obtain the sensitivity of the sensor, and approximate to obtain the energy gap of silicon material at 0K. This apparatus is stable and reliable, and has abundant physical experiment contents, clear concept, reasonable structural design and high-accuracy measurement results. This apparatus is mainly used in general physical experiments and design research experiments in colleges and universities.

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China Wholesale Abbe imaging Factories – LCP-18 Apparatus for Measuring Speed of Light – Labor Detail:

Main experimental contents
1. The phase method is used to measure the propagation velocity of light in air;

Optioanl experiments for LCP-18a
2, Phase method to measure the propagation velocity of light in solid (LCP-18a)
3, Phase method to measure the propagation velocity of light in liquid (LCP-18a)

Main technical characteristics

1. the use of reflectors to increase the effective light range, to achieve short distance measurement;

2. the measurement frequency as low as 100KHz, greatly reducing the time measurement instrument requirements, high measurement accuracy.

Main technical parameters

1, laser: red visible light, wavelength 650nm;

2, guide: precision industrial linear guide, 95cm long;

3, laser modulation frequency: 60MHz;

4, measurement frequency: 100KHz;

5, Oscilloscope self-prepared.

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