Chamber Definition and 243 Threads

Hi guys, I'm a graduate student and currently doing some research on a packed bed - I want to collect gas data from the headspace of my samples so i thought of building a gas collecting chamber on top of the vessel, where i can take gas measurements using calorimetric gas tubes. I'm not sure...

Hello everyone! I want to design a rectangle vacuum chamber (12x12x72) out of 1/2 steel. I would be welding the sides together to form a seal. Would this work? any suggestions on what I could do? Thx! (I not great at this stuff so your help is much appreciated!)

Hello. We are elementary school kids who built a cloud chamber for our science project to test out the effectiveness of different shields against background radiation. We are not sure about something involving beta-particles. Can you help us please? We know low-energy beta particles cannot...

We have all seen the marshmallow peep inside a vacuum chamber grow and them shrink. I want to convey the importance of Space suits and protecting the human body by creating a sort of "space suit" for a peep to wear or get placed inside of while in a vacuum chamber, so it is protected from the...

I'm trying to do a cloud chamber, but I think they are all too common and simple. It's just a box. I've thought about doing in a bottle, but it is just too weird, and is not original. Any other ideas or hints?

Greetings all, I finally made a cloud chamber using an old aquarium and dry ice. Now, I got the expected result to happen, with a fine mist falling from the top like snow, but didn't see a single particle track. Any ideas why this might be? I have some guesses, but wanted someone with...

Suppose there is a test chamber containing liquid nitrogen. The container is insulated and only a small opening is there so that chamber is exposed to atmospheric condition. As the saturation temperature of liquid nitrogen is -196 degree Celsius at 1 atm pressure. chamber will remain at -196...

Hi Guys, Thanks for looking at the post firstly. I'm in the process of creating a chamber roughly around 30mm x 50mm x 70mm (W, L, H). The chamber will be used below the typical refrigeration temperature (-18°) of around -50°C. Please could you offer some advice where to start with this. 1...

My setup: plastic box (~1l) with the cover painted black mat the bottom of the box covered with sponges saturated with ethyl alcohol (90%) to the limit (all over sponge capacity poured back to bottle) turned upside down and placed on ~0.5kg of dry ice. I can see a 'rain' of particles of...

Yesterday I decided to carry out a cloud chamber experiment for a school assessment. I used "100%" isopropanol and around 2.5 kg of dry ice. After a wait of approximately 30 minutes, the particle tracks began to appear. I placed a weak source of Americium-241 sourced from a smoke detector (1...

Recently I came across an excellent video that brings to life an age-old physics teaching theme... The world’s largest vacuum chamber is NASA’s Space Power Facility in Ohio, pictured below. They remove around 30 tons of air from the chamber in order to test equipment during in-space conditions...

Hello all! Firstly, thanks for reading this post! I am a high school student attempting to make a basic, dry ice cloud chamber. I have made several cloud chamber designs and I am about to start making it. However, before constructing the product I would appreciate some members to provide...

Hello! I am designing a vacuum chamber made of a vertical glass cylinder free of contact from any other structure, except by the top and bottom where aluminum disks seal the device. Temperature is the same inside and outside. I found on several books the following formula for the hoop stress...

Molten rock accumulates in a magma chamber outside the North Island’s main volcanoes http://www.scientificamerican.com/article/zombie-volcano-slowly-grows-beneath-new-zealand/ Something for folks near Taupo to keep an eye on. Where's Taupo? https://en.wikipedia.org/wiki/Taupo...

Homework Statement Problem #13 on the attached picture (I can't retype a bubble diagram) Homework Equations I honestly have no clue. I know I'm not supposed to say this because I'm supposed to read my textbook first, but this is not covered at all in my textbook, this is a unit my teacher...

Hello all! I understand the concept of the TOKAMAK vacuum chamber, but can someone explain to me how I can actually calculate the pressure in which I need the chamber to be evacuated? I know it should be in the range of approximately 10^-7 or so but more specifically, is there an equation to...

I recorded an amazing cloud chamber track tonight. It came from the direction of the sun, seemed like the angle was off slightly though. I was at 1200ft above sea level and it was 6 pm. I will attach a picture of my setup and a video that is typical and then the video with the awesome track. It...

I was wondering if it is possible to setup a Tokamak like chamber with some sort of varying magnetic field arrangement around it, that can accelerate deuterons or other light nuclei, as if those nuclei were 'pulled' by a constant electric field of between 1kV and 100 kV (n.b. this should not...

If an object is in a large vacuum chamber and is dropped, what is to stop it from accelerating to the point that it passes the speed of light, because there would be no air resistance to stop it from constantly accelerating?

I am finding a big bottleneck in my experiments to be the cost of empty McMaster-Carr Dual-Chamber Epoxy-style injector at $5-15 per chamber. This injection molding is currently limited to one chamber per use. The issue is that once my injected polymer is squeezed out of the dual chamber...

Hello. I have a question about the relation between the number of the pair created in the ionization chamber by the radiation and the energy deposited in the counter. In the text, it is written that "The mean number of pairs created is proportional to the energy deposited in the counter."...

My question is harder to explain than I would imagine it will be to answer. I'm trying to vaporize a non-combustible fuel source with an internal radiant coil surrounding a small vaporization chamber consisting of a heat-resistant cotton-like material being fueled by a constant drip fuel pump...

I'm building a vacuum kiln to dry wood and have some questions that may be rhetoric, since I am fairly certain I know the answers. I don't see a need to describe the project in great detail so I'll stick with the basics. The biggest challenge is applying heat to the wood. I believe I will have...

Hello I am teaching physical science at an online school, and came across this issue in the textbook - I'm looking to double check with more knowledgeable people before I bring it up and potentially make a fool of myself. In one chapter of the physical science text it discusses various...

Homework Statement Consider a rectangular isolated(non-conducting) chamber as shown below. The chamber is divided into three compartments. The wall separating A and B has negligible mass, no friction and is conducting, while the wall separating B and C has negligible mass and friction and is...

Hi.. I am working on a project where I need pressurized air from one tank to fill another chamber at lower pressure. I have values for input pressure, required final pressure and diameter of the short flow pipe. I understand that the density and flow rate of air will keep on changing as the...

Hi guys, I want to design a gas burner and combustion chamber. I use natural gas as fuel. I want to control air to fuel ration, so air flow has to control. I have an air compressor as air flow source. Clearly, it's needed a mixture tube before the combustion chamber. Now I have some...

Hello For my study I'm making a specific design I'm trying to design a ballast chamber which i want to empty with a venturi pump I attached a schematic image of the idea Through pipe A a liquid is pumped with around 150m3/h through a 6'' pipe. The pipe is narrowed at the end, with a space...

Homework Statement In a spherical chamber with volume V , which contains a gas with pressure p1, there is a surface that has a much more low temperature than the other surface temperature of the sphere surface( which is kept constant). Because of that the particles that hit the coresponding...

Hi Everyone. I am trying to simulate a rocket combustion chamber. The question I have is this. Is the ignition (by any means) in the rocket combustion chamber only used for increasing the temperature of the cryogenic propellant to a state where it can ignite and burn? If you are using an...

How's the electrons of the accelerated electron beam enter the bubble chamber that contains the liquid hydrogen? Wouldn't the high intensity of the electron beam cause a massive explosion and destroy the bubble chamber that has an outer wall of at least quarter inch of steel! I think hydrogen...

i found that in Anechoic chamber there are pyramidal structures over the walls, what are the geometries of the height and base of those pyramids? W and H on the picture:

Lets say if i have a bell nozzle rocket engine such as this one : http://www.braeunig.us/space/pics/fig1-04.gif and inside the combustion chamber i have an average pressure of around 300 psi. If i wanted to feed in liquid fuel into it while the fuel pump is only able to supply 100 psi of fuel...

Hello. I manufacture Parts Cleaning Machines. I have hit a small obstacle in designing a new machine in which I have to push the door of a chamber from front in order to obtain a perfect seal (for vacuum & to prevent leaks). Some research on the internet has led me to videos of similar...

Hi Members, As described above, I am making a prototype of a vacuum and compression chamber and I could use some help calculating the wall thickness/support structure that is needed to make sure things don’t go boom. After a fair amount of research I discovered that a few people did post...

Hello and thanks for reading Homework Statement I'm in high school. I chose my yearly project in physics, and wanted to make a cloud chamber. The subject is "deflection of charged particles in a magnetic field", so I must set a magnet alongside the cloud chamber. I've prepared for it, bought...

How can we find the gas concentration in a chamber without using a sensor i mean by calculation suppose a mixture of gas ammonia 10% and CO2 90% flow to the gas chamber how we can find that concentration of gas in the chamber?

If using diffusion pumps (2 or 3 in series) to achieve ultra high vacuum, how do you hook them up together, for example adding them onto a system like in the provided picture? Would you use T-connectors to put them all on the same input and output valves or would you have valves for each pump?

I would like to show the details of the situation before asking the specific question so: Conditions:The attached sketch shows a situation that is slightly after the start, since the balloon is shown with air already inside. The question that I will ask is about a situation where the balloon...

Homework Statement What is the mean free path of an N2 molecule in an ultra-high-vacuum chamber at a pressure of 10-10mbar? Homework Equations λ=1/(√2)nσ number density n, collision cross-section σ p=nkT pressure p, temperature T σ=πd2 d molecular diameter The Attempt at a Solution...

Hello everybody, I am working on some tests on materials and structures in a vacuum chamber. I noted that during the final moments of the pressure rising (when I open the valve to let the air in), temperature sensors installed in the chamber record the temperature rising more than ten degrees...

Hello physicists, This is my first time on these forums, so I'm sorry if this isn't the right place. Feel free to move it if it isn't. I am building a small cloud chamber to detect particles resulting from the decay of pions in the atmosphere for a local science fair. I hope to see electron...

Homework Statement This is a question on multiple coulomb scattering in a wire chamber momentum p = 500MeV/c wire resolution = 120 microns distance from wall to wire = 0.01m radiation length of wall material X_0 = 2E-3 m mass of charged particle m_{\pi} = 139.6 MeV/c^2 charge z = 1 How thick...

Hi all I am a 17 years old student and I want to make a ion chamber to measure the ultraviolet radiation in the stratosphere. My project will be connected to a balloon that will fly to a 30 km height. I am going to make our first prototype with my team it will be the most basic ion chamber: I...

What would happen under these circumstances: A sealed container of water in a vacuum chamber. Since water doesn't expand like air, I assume that there would be no extra pressure within the sealed container once the air was evacuated around it. Since there would be no, or very little air...

I seek to build a vacuum chamber for shipping radon contamination sensitive samples. The cylinder will have a height of approximately 2 inches, and needs an inner diameter of 10 inches. The plan is to weld stainless steel pipe to a plate on the bottom, and to have a lid bolt on to the pipe with...

Hello everyone, not sure if this is the right forum to post to, but I hope you can help me out. I am not a math person and am completely dumbfounded when it comes to engineering. I believe my request should be pretty straightforward for a person with the right knowledge. Basically, I'm thinking...

What happens to the fill gas in an ionization chamber? Once incident radiation has created an ion pair, which has then moved to its opposite polarity electrode, is that ion pair removed from the fill gas? So if enough incident radiation is detected over a period of time all the gas would be...

Homework Statement Figure 21.13a shows the bubble-chamber tracks resulting from an event that begins at point A. At this point a gamma ray (emitted by certain radioactive substances), traveling in from the left, spontaneously transforms into two charged particles. There is no track from the...

There are many sources which say that a human cannot survive under the abrupt exposure to vacuum. What would happen if the exposure is not abrupt? Can a regularly clothed human survive in a vacuum chamber if we gradually lower the air pressure in the chamber to vacuum values for several hours of...