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Laboratory

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オッシーが大学時代に使ったラボでの実験機材や、ペーパーなど。

以下の写真はジェニファーによって撮られたものです。
(These photos were taken by Jennifer.)

Counting Statistics Experiment

 

Photoelectric Effect Experiment

 

Chaos in the Diode Circuit Experiment

 

Thermionic Emission of Electrons Experiment

 

Franc-Hertz Experiment

 

The Counting Statistics Experiment to count gamma particle from nature and Cessium-137 source

Nobuyuki O.
Physics Undergraduate Student, Northern Arizona University in Flagstaff, AZ
(Received 11 March 2004)
I counted the radiation decay in nature and from Cs-137 using the Geiger-Mueller tube, which can detect the gamma particle. From those data, I used Poisson distribution to determine the theoretical distribution. Then, I plotted as a histogram of experimental and theoretical distribution. The second part of this experiment, I used normal distribution with theoretical distribution. The reason to use normal distribution was the number of counting was too much and I put the data in groups called bins. Then, I integrated over the bin size. This normal distribution was good for integration. Finally, I tested using chi-square test to determine the fitness of theoretical value and experimental value. Then to determine the validity of fit, I used the chi-square-test tables. The result was 0.94 for the low counting and 0.99 for high counting.

The Photoelectric Effect Experiment to Calculate the Planck’s constant Using the Mercury and Helium tube

Nobuyuki O.

Physics Undergraduate Student, Northern Arizona University in Flagstaff, AZ

(Received 20 April 2004)

The photoelectric effect experiment is to confirm the particle theory of light. When light hit the metal, electrons are given off from the metal. However, all light does not related to the electrons emission. Only light that have a certain amount of energy can help electrons to be emitted from the metal. This energy is known as the work function. From the plot of all the data which was photoelectric current and the applied voltage, the work function was determined, which was 1.71 V in this experiment. From this work function, the Planck’s constant, which was , was also calculated. This value was 1.21 % error with respect to the accepted value.

Thermionic Emission of Electrons

Franc-Hertz Experiment

Chaos in the Diode Circuit

The Michelson Interferometer Experiment

 

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