Questions tagged [experimental-technique]
filling in the unspecified details of elegant-sounding descriptions of experimental methods.
437 questions
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How do we know that Bismuth-209 is unstable?
I am very intrigued by the story that Bismuth was once believed to be the heaviest element with a stable isotope, until we learned that it is not stable due to some experiments in 2003. This is the ...
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Is it possible to use a warm (~150K) cryopump to achieve high vacuum ($10^{-7}$ Torr) if the chamber is roughed and flushed with water vapor?
I understand that water in vacuum chambers presents a challenge because it adsorbs to the surfaces and takes much longer to pump out than other gasses. But if one doesn't care about how long it will ...
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Funny looking hydrogen spectrum
I am preparing a physics demonstration for high schoolers. The picture shows the line spectrum I see from a hydrogen (Balmer) lamp through a diffraction grating. The red line and the cyan line are ...
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Electron multiplier pulse
I have an issue with an electron multiplier. The pulse is 5 nanoseconds long. The electrons form a cloud in front of the conducting anode. The issue I have is: is it a current pulse, a voltage pulse, ...
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About Fourier Transformed Infrared (FT-IR) Data Processing Techniques and Normalization
I am new in the community so I am sorry in case this is not the correct place to ask this question. I have a question regarding the processing of Fourier Transformed Infrared (FT-IR) Spectrocopy data.
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Frictional properties of materials with rough surfaces, how do I reduce the uncertainty of my measurements? [closed]
I'm designing a physics experiment to study the frictional properties of materials with rough surfaces.
I need to measure the coefficient of friction accurately, but I'm concerned about sources of ...
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Multimeter cannot read the capacitance
I am making a DIY Paralel Plate Capacitor with the dimension of 27.5cm times 4cm seperated by 80 gsm paper. Assuming paper thickness is 0.1mm I should get around 3.6nF.
But when I test using my cheap ...
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Is it possible to create a small instance of a sprite?
Im a high school student hence have no experience,the phenomenon im asking about is TLE (Trans luminous Events) specifically a sprite. From what i know, sprites are formed due to excitation of ...
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What shape is better for iron particles being used to detect magnetic fields, spherical or rod-shaped?
I'm trying to make a device where small iron particles attached to a rotatable pointer are placed near a magnet. I'm using 1 mm soft iron spheres for the ferromagnetic material. I avoided using tiny ...
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Can certain ensembles of equipment reveal the vectorial descriptions of the electric and magnetic fields at specific points in space?
The title of this post pretty much says it all. I would like to know if equipment exists that can, at some position $(x,y,z)$ in space, provide simultaneous vectorial descriptions of the electric ...
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How do we determine the temperature of BEC by time-of-flight imaging?
I am studying atomic physics and I have a small question about the experimental realization in BEC experiment. When the temperature is way below the critical temperature, the condensation occurs and ...
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Can we measure the temperature of the condensed BEC by method of the in-situ imaging?
I study atomic physics, and I met a small problem in the imaging method of a condensed BEC. As far as I know, most group use time-of-flight imaging to determine the temperature. I would like to ask if ...
- 520
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In an experiment, I used a Hg lamp to discharge a **positively** charged zinc plate. How could this happen?
I am currently preparing to demonstrate the Hallwachs effect to my students. Specifically, I wanted to demonstrate that a Hg lamp will discharge a negatively charged zinc plate, but not a positively ...
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Books on thin film characterization?
I'm looking for comprehensive books or resources specifically focused on thin film characterization techniques, particularly with an emphasis on electrical response measurements. While I've consulted ...
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Rectangle-like structures and their folding in physics
It is well known that mathematics helps to explain some science problems. For example gömböc, which was a well hidden body from mathematicians, explains the body structure of some tortoises in ...
