What is Chamber: Definition and 241 Discussions

A diving chamber is a vessel for human occupation, which may have an entrance that can be sealed to hold an internal pressure significantly higher than ambient pressure, a pressurised gas system to control the internal pressure, and a supply of breathing gas for the occupants.
There are two main functions for diving chambers:

as a simple form of submersible vessel to transport divers underwater and to provide a temporary base and retrieval system in the depths;
as a land, ship or offshore platform-based hyperbaric chamber or system, to artificially reproduce the hyperbaric conditions under the sea. Internal pressures above normal atmospheric pressure are provided for diving-related applications such as saturation diving and diver decompression, and non-diving medical applications such as hyperbaric medicine.

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  1. A

    Why the chamber for the Millikan Oil Drop experiment is so large?

    1. The question asks, why is the external chamber in the Millkan Oil Drop experiment so large? The Millikan Oil Drop is a classic experiment for determing the value of e, fundamental charge, on an electron. In my version of the experiment, I spraw droplets into an external chamber, and then...
  2. C

    Preventing recombination in a diffusion cloud chamber?

    Hello all, I built an expansion cloud chamber and noted that an electrostatic field was needed to see the ionizing radiation. I know this is needed to prevent recombination of the ions and their free electrons. However, I built a diffusion cloud chamber a while ago that called for no electric...
  3. D

    The ionization chamber as a capacitor

    An ionization chamber is like a capacitor in many ways. The gas inside is the dielectric, and if ionization occurs, the ionized dielectric atom or molecule will no longer be able to store the same energy at a voltage potential. The chamber will have dielectric breakdown during ionization...
  4. D

    What is a recombination ionization chamber?

    I have been under the impression that recombination is a bad thing, not a good thing. And you increase your voltage on an ion chamber until recombination is eliminated. I also understand that recombination is a bigger problem for neutron and alpha radiation because its ionization trail is much...
  5. B

    Determining the transfer function of a humidity chamber

    I have created a mock up of a humidity chamber which i will soon be integrating into a temperature chamber for undergraduate project. I am confused on how i can control the system. I have currently a humidifier with a relay built in, this relay is going to switch on and off from a PWM signal...
  6. B

    Building a flat rectangular vacuum chamber

    I'm uneducated in Physics so I'm not sure where to begin with this. I want to build a vacuum chamber that is rectangular and fairly flat. It will measure 48"X96"X8" I plan on constructing it from clear polycarbonate sheet on one face (would clear acrylic be a better choice?) and aluminum sheet...
  7. P

    Can someone translate these bubble chamber tracks?

    I was looking for more details about this picture: I think I see a few places where electron/positron pairs arise but can't be sure. Does anyone know what types of particles (energies) are in this image.
  8. T

    Cloud Chamber Building for 9th Grader: Dry Ice vs. Peltier Cooler

    Something a recent obsession has taken me into, I'm attempting to build a cloud chamber, for fun and to observe some particles in action. As a 9th grader, I'm somewhat limited in supplies. Thus, I'm wondering, if I built a cloud chamber, would it be better to use dry ice, or use a peltier cooler...
  9. M

    Time Stasis Chamber: Potential Tech in Near Future?

    sorry if this has been discussed before but I've not had much luck finding anything on the forum search. Basically I am interested in the potential technology behind a time stasis chamber - a pod or something similar that would allow humans to travel great distances in space without them ageing...
  10. C

    Physics of a Cloud Chamber: Neutrons, Kinetic Energy, and Ionization

    Why can't I have a neutral particle come into a cloud chamber and leave a track? I was reading about cloud chambers and it says when the charged particle comes in it ionizes the vapor in the chamber. But why couldn't a neutron come in and ionize the particles in the chamber with its kinetic...
  11. C

    Mixing chamber with multiple inlets

    Hi I was wondering if someone could help me with this question. Question 4 uploaded in picture. Ok, so far this is what I have found Pipe 1: m1=2kg/s P1=1000kpa T1=100 C h1=334.82kJ/kg Pipe 2: sat-liquid T2=60 C P2= 1000kpa h2=291.36KJ/kg Outlet: sat vapor P3=1000kpa V=20...
  12. R

    Termal measurements in a closed chamber

    Hi! I'm having problem with measuring the temperature in a closed (vacuum) chamber. I'm using thermocouples (type T) connected to the object inside the chamber, but both the copper wire and the konstantan wire are then connected to copper wires before exiting the chamber. Therefore I cannot set...
  13. L

    Thermal Vac chamber pressure gain question

    Hi group, I work at Thermal Vacuum Chamber, and we had an incident last night where our chamber, Which is 70' H x 30' D, was pumped down to a pressure of 3.7E-7. There was a release of gas into the chamber abruptly last night that caused the pressure in the chamber to rise to 5.0E-7, before it...
  14. D

    Thermally isolated cylinder - work done and temperature changes in each chamber

    Homework Statement There is a closed, thermally insulated cylinder, separated into two chambers by a moveable, frictionless, gas-tight, thermally insulating piston. Initial, the volume of each chamber is 3 liters, and each contains an identical monoatomic ideal gas at pressure of 1 atmosphere...
  15. H

    Designing a combustion chamber (solid mechanics problem)

    Here's my problem: I want to design a cylindrical combustion chamber for a hybrid propelent rocket. Basically, I will burn paraffin and use oxygen as oxidant. As I will be using stainless steel, I thought I could approximate the maximum stress that must be resisted by the material through a...
  16. X

    Differential Equations for a Gas-Filled Chamber System

    I'm trying to figure out which set of differential equations describe the following quite general but relatively simple system: A chamber which volume can be changed by moving a piston filled with a gas. Additionally, gas can be released from the chamber through a relief valve and heat can be...
  17. K

    Q) A closed chamber containing working refrigerator is pefectly

    Q) A closed chamber containing working refrigerator is pefectly insulated and d door of refrigerator is opened, wat ll happen to temperature inside the chamber a)Decrease b) Remain same c) Increased d) Cant say coz it depends on quality of insulation
  18. T

    In a magnetic confinement fusion reactor chamber, how does the gas turn into plasma?

    Where does the heat come from? What pushes the atoms together?
  19. S

    Amount of isopropyl in a given cloud chamber

    EDIT: The title of thread is misleading. Instead it should say: "Aquarium cloud chamber - realistic?" Hello, I am currently constructing a cloud chamber which is going to be using a w% > 90 % solution of isopropyl alcohol as the condensation chemical. I am using a typical home aquarium with...
  20. M

    Building an atmospheric chamber

    Building an "atmospheric chamber" I have to build a chamber (ok, large box) to do some atmospheric pressure tests. The box will be 48 inches square. I have to simulate going from sea level (0 feet, 14.696 psia) to 7000 feet (11.34 psia). I'm thinking of building the "box" from 3/4" plywood...
  21. L

    Optimizing Sensitivity in a DIY Cloud Chamber: How Much High Voltage is Needed?

    I've built a simple cloud chamber using a peltier cooling element and I'm able to see some tracks which is really exciting. But now I've seen in many places that you can apply a high voltage between the floor and a ring at the top of the chamber to further improve sensitivity, and also to force...
  22. M

    Understanding bubble chamber tracks

    Hey. :) I am a Year 13 student and do not have to know anything about bubble chambers. However, they are mentioned in my textbook and I am interested in them. The textbook states: "Measuring the curvature of the tracks allows the charge and mass of the particles to be deduced. The spiral...
  23. B

    Designing a Vacuum Chamber for Samples Dissolved in Ethanol

    I work with some samples that are dissolved in ethanol. Currently, we plate them, and evaporate overnight in a fume hood, and then bake them using a standard convection lab oven. It takes about 24 hours and really slows me down. And buying an explosion proof vacuum oven is ridiculously...
  24. JJBladester

    Damped oscillations in a vacuum chamber

    Homework Statement A 200 g oscillator in a vacuum chamber has a frequency of 2.0 Hz. When air is admitted, the oscillation decreases to 60% of its initial amplitude in 50 s. How many oscillations will have been completed when the amplitude is 30% of its initial value? Homework...
  25. A

    Harmonic Dampening inside of a combustion chamber

    Could anyone recommend any literature on harmonic dampening inside of a combustion chamber (augmented injector plates and chamber geometry to reduce vibration)? It seems resources are rather scarce on the subject so if anyone knows of any websites, books, papers, etc. that might be helpful, I...
  26. M

    Normal modes in a acoustic chamber

    Have a project to do on an acoustic resonance chamber, a loudspeaker attached to a perspex box with a copper pipe, there was a microppohne inside the chamber connected to oscillloscope. We investigating a few variables in most detail was route [1] [1]damping by chainging materials in the...
  27. J

    Spherical gas chamber, change of pressure

    Homework Statement A sphere is filled with a gas which has a constant temperature T. The pressure in the sphere starts at p0 and the spheres radius is r. Assume that a small area (A) of the sphere is held at a very low temperature, while the rest of the surface holds the temperature T. Also...
  28. A

    Devices that can inject air-fuel mixture into the combustion chamber

    hey, I need all the help i can get on this one... can u guys tell me if there is any device that can be used instead of an ordinary fuel injector since i want it to be able to inject an air-fuel mixture. since the normal injector can't inject air i desperately need another device...
  29. J

    The cylindrical chamber electric field

    In the cylindrical chamber, the voltage is applied to a very thin wire, a few mills of an inch in diameter, stretched axially at the center of the cylinder. The cylinder wall is usually grounded. The electric field is, in this case, E=\frac{V_{0}}{Ln(b/a)r} where a = radius of the central...
  30. C

    Charged particle in a cloud chamber?

    Homework Statement when a charged particle enters a magnetic field in a cloud chamber, why does it move in a circular path instead of straight line? I have no idea why. please help Homework Equations The Attempt at a Solution it has something to do with the r changing? as I said...
  31. M

    Behaviour of accelerated object in fluid chamber with perforated bottom

    I have a object which travels down a chamber filled with fluid with perforated bottoms. As the objects travel with constant velocity it will de-accelerate due to resistance provided by displacing fluid. Density of fluid is known as well as force pushing object. I am neglecting the drag as OD...
  32. W

    How Much Voltage Can a 2.4 MeV Beta Particle Generate in an Ionization Chamber?

    [b]1. Homework Statement a) Estimate the number of ion pairs produced by a 2.4 MeV beta particle in an ionization chamber. Assume that 34 eV of the beta particle's energy is absorbed in the creation of each ion pair, and that the beta particle energy is completely absorbed within...
  33. LarryS

    Uncertainty Principle in Wilson Cloud Chamber Measurements

    An alpha-particle produced by radioactive decay leaves a visible continuous track in a Wilson Cloud Chamber. As it collides with and ionizes the molecules of the vapor, its position is constantly being “measured” by the vapor molecules. If a magnetic field is present, its track will be curved...
  34. S

    How to measure O2 in a chamber?

    Dear all: I want to make a chamber as O2-free. The chamber is not perfectly sealed, so it has some small holes. I have used N2 gas (by pumping N2 from one input and escaping of O2 from holes in junctions). Now, I want to measure the amount of remaining O2 inside chamber. How can I do that? Is...
  35. T

    What is the flow velocity of a rocket engine's thrust chamber?

    Hello. I am trying to find the thrust chamber flow velocity for a rocket engine, but no literature seems to be able to come up with a solution for this. The best I have found is "Rocket Propulsion Elements" which states that the value probably lies somewhere between 200-400 ft/sec. But in...
  36. S

    Need help making a cloud chamber

    OK I know many people here are familiar with cloud chambers particularly those of you who are teaching. I have never built one but I want to go all out on my first attempt. I have seen plenty of instructions from researching through google and I was wondering if you guys have any additional tips...
  37. K

    Ionization chamber and GM tube

    Homework Statement What are the difference between ionization chamber and GM tube in structure which make them have different functions? The Attempt at a Solution Higher voltage is applied to GM tube so that electron avalanche can occur. Then I wonder that if higher voltage is...
  38. P

    Designing a Plenum Chamber for Motorcycle Supercharging

    Gday all I am currently supercharging a 1000cc 4 cylinder motorcycle of mine, i am up to the stage of designing the plenum chamber, as usual there are heaps of designs yet not much in the way of actuall theory and mathematics on how these people came up with them. Who knows if all they did was...
  39. R

    Heat transfer inside engine combustion chamber

    Hi, I'm not sure if I've got this in the right section, but I'm hoping someone can point me in the right direction. I'm trying to create a model of what's actually happening during the combustion cycle in an engine and where the energy is going. As the intake valve closes and the piston...
  40. B

    Designing an inline flare gas combustion chamber

    I have built a nice biomass gasifier that produces about 700,000 btu's of heat per hour by burning or flaring the gas that comes out of it. What I want to do is, to flare the gas in an enclosed chamber so I would be able to capture all the exhaust and run it through some heat exchangers for...
  41. C

    Why Does Fission Chamber React to Neutron Fluxes Over Source Range?

    why does fission chamber start to work from neutron fluxes more than source range in spite of being a kind of ionization chamber that is sensitive to gamma rays?
  42. E

    Particle Trajectory & Velocity in Bubble Chamber vs HUP

    Hi! Let's say I have a bubble chamber and a particle traveling in it. I know the trajectory of the particle, because I can see the bubbles. But if I measure the time elapsed between the appearance of the first bubble and of the last one, I know how much time the particle took to follow the...
  43. V

    Is a double/single slit experiment possible in a gas chamber?

    Were there any attempts to setup double/single slit experiment inside a gas chamber, bubble chamber or similar, so that particle trajectories would leave visible trails? This seem to be the easiest way to figure out what exactly is going on, but internet search returned no result about any such...
  44. JK423

    Double slit experiment in a Bubble Chamber

    Has this type of experiment ever been performed? Firing electrons one at a time we can easily get the which-path information and see if interference dissapears or not. What actually happens? Also, if we do the double slit experiment with a usual laser but in a smoked environment (in order to...
  45. S

    Diffusing an electron beam throughout a chamber

    Here's the basic setup: A cathode ray tube is producing an electron beam which leads into a chamber. Would it be possible to put some sort of lens at the entrance of the chamber, so as to diffuse the electrons throughout said chamber. Just to be clear, my main question is about the lens...
  46. Q

    Building a Cloud Chamber: Tips and Tricks

    http://www.lns.cornell.edu/~adf4/cloud.html" Has anyone tried this? It looks really cool, and I am thinking about giving it a shot, but I'd like to know how easy it is to get it working, or if there are any other things I should know. One thing I am concerned about is the directions say...
  47. R

    Why Do Particles in a Bubble Chamber Rotate in Opposite Directions?

    Homework Statement Basically, a particle is moving in a straight line in a bubble chamber. Then, it splits into two other particles. The new particles start to rotate, but while one rotates clockwise, the other rotates counter-clokwise. The trajectory of the particles before and after the...
  48. A

    Precombustion chamber and compression chamber

    i 'd like to ask abt the difference between precombustion chamber and compression chamber which used in diesel engines (indirect injection)??
  49. M

    Why dont neutral particles in a bubble chamber leave tracks?

    Even if they have kinetic energy, neutral particles don't leave tracks behind. Why is that so? Also, can someone please explain how a cloud chamber works? Thanks!
  50. N

    Vacuum Chamber Suction Pressure: -100 Kpa or 0 Kpa?

    This is NOT a "problem", it's a rather a question. Let's say I've got a vacuum chamber, and I suck the air out of it using a vacuum pump that is capable of doing -200 Kpa. Let's also say that there is a valve on this chamber. After a full vacuum has reached, I open this valve WHILE the pump is...
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