Research and education quanta of an experimental physicist


Oct 01, 2014 career H-1B H-4 US visa

As a Chinese, I applied for H-1B to work at USD. Before the application, a petition for Nonimmigrant Worker, form I-129, was filed on my behalf by USD and approved by USCIS. After that, USCIS sent me a Notice of Action, form I-797, where I got a receipt number to fill the DS-160 non-immigrant visa application form online. I then used the DS-160 confirmation number, the start and expiration dates of the petition and the receipt number to schedule a visa interview.

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May 14, 2014 teaching flip

According to wikipedia and citations therein, the basic concepts of flip teaching include:

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May 07, 2014 learning humidity phys-332

At a certain temperature and pressure, a blob of gas can only hold a certain amount of water vapor inside. If the temperature drops or the pressure increases, the maximum water vapor that this blob of gas can hold also drops.
The water vapor starts to condensate on some cold surface as dewdrops. The temperature, at which the water vapor starts to condensate, is called the dew point. It is an absolute measure of the humidity of the gas at certain pressure. The higher the humidity, the easier for the water vapor to condensate (One does not need to lower the temperature a lot to see some dewdrops), and the higher the dew point. The dew point is a function of pressure.

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Blogs on physics research and educational activities of Jing LIU, an assistant professor in physics at the University of South Dakota. He is an experimental physicist developing novel particle detectors for astroparticle physics and civil use.