Bubbles Definition and 107 Threads

How can something subatomic blow bubbles in a chamber?

Bubble regions devoid of galaxies are seen giving structure to the universe; this is coincident with the observed filament structure of super-cluster complexes of galaxies. Similar filamentation is seen in the concentration of fluid boundaries when a (soapy) foam is filled with pressurized...

I want to know approximately how compressible a fluid can become when H2O bubbles are present. Does anyone know how to do this? Thanks.

I've heard that, when a soap bubble is given a charge, it expands. I was just wandering whether, when you wet a ring made of metal with a soap solution and blow to it slowly, the bubble created expands because of theat above principle. Does The friction between the metal ring and the bubble...

Homework Statement 1)In a bubble the air molecules spread themselves out equally. However, outside where there is liquid, the pressure on the higher part is greater than below. So why would the bubble be perfectly round? Also, would the pressure in the bubble be calculated via the hpg of the...

hello, i have no bubbles in distillation of phenylacetone under vacuum, the heat is about 120c, and the vacuum pump produce around 20 torr. is that normal? please help me

When you kick around in a pool or lake, air bubbles seem to stream from your feet... But what causes this? Is it air being pulled down from the surface, or oxygen from the water molecules, or something else entirely?

Homework Statement The pressure by the walls of a bubble is 4σ/r (where σ is the surface tension). The radius r of 2 bubbles is measured. After that you bring the two together by connecting them with a straw (the smaller bubble has higher pressure and gets smaller, while the bigger bubble...

Homework Statement Well,actually it isn't related to my hw.I ask this just simply due to my curiosity. Here's the question: Sometimes,we saw bubbles formed on the water surface,could anyone explain this phenomenon:)?Any theorey behind it? thx a lot. Homework Equations The...

Hi, this question popped into my mind while learning for a macroeconomics exam. Suppose there is a stock market crash. Why does it matter to real economy? For example, if all stock prices drop by half suddenly, everyones wealth would be halved, but that would be only numbers in accounting...

Homework Statement Two soap bubbles of equal radius 'r' coalesce isothermally to form a bigger bubble of radius 'R'. If the atmospheric pressure is P0, find the surface tension of the soap solution. Homework Equations Surface energy = surface tension x increase in area (W = T.ΔA)...

I understand most of the physics of soda. The bubbles are carbon dioxide in the form of gas and they are rushing to the top to escape from the liquid. I'm trying to figure out why soda bubbles when you shake it. My guess is that when you shake it you're adding energy (work) to the soda and...

Can someone, please, explain to me (in layman's terms, [ie no mathematics]) the theory behind early cosmological phase transitions and these supposed 'bubbles' ?

I thought this story was charming, since it hints that there still might be a few things people can do that computers cannot (yet) do. I have no idea of the significance of these bubbles, but I'd be interested to hear others comments...

Homework Statement A soap bubble is floating in the air. The wall of the bubble has an index of refraction of n = 1.33. It is observed that red and violet light are reflected from the surface of the bubble, but no green light is reflected. Compute the minimum thickness of the bubble...

Spherical non-oscillating bubbles in a saturated liquid always tend to dissove, why? If the pressure is already balanced, why the bubbles dissolve? Is it due to the diffusion of gas? If all things are in balance, will bubbles still dissolve? Thanks for help.

So we're considering adding some soap bubbles to a fire-dancing show. Why? Because soap bubbles are awesome! But you know what's even _more_ awesome? That's right! EXPLODING SOAP BUBBLES! OK, so we don't really want them to explode (well, _I_ do, but apparently democracy rules), but...

This article http://www.physorg.com/news/2011-06-big-edge-solar.html" tells about discovery of magnetic bubbles at the edge of solar system. As I understand they are around 100AU from Sun and around the size of 1AU. That makes them roughly 3.6° angular size. Shouldn't these bubbles cause...

Homework Statement For an elastic rod, show that \[ \frac{\partial C_{L}}{\partial L}_{T} = -T*\frac{\partial^2 f}{\partial T^2} where C_{L} is the heat capacity at constant length L. Homework Equations dU = Tds + fdL F = U - TSThe Attempt at a Solution I've used dF = dU - Tds - SdT = fdL -...

just a quick question... I was wondering what is a more scientifiacly correct term for bubbles. e.g. it was noticed a bubble layer began to form on the surface of the magnesium. what word could be substituted for this? I seached around and found that apparently the scientific term for bubble...

Can someone explain why bubbles only begin to form when the vapor pressure = external pressure? Since vapor pressure is defined as the equilibrium pressure of the gas in a closed vessel, the connection does not seem obvious.

I have seen a few other similar posts but wanted to add my thoughts. Is gravity the space between bubbles of dark matter. Matter that we know and dark matter are like oil and water? Gravity is the force created in the structures between the bubbles. Is that why we see the current structure of...

Homework Statement Hi, A gun totally immersed underwater and shoot a bullet. Q1. Would there be a trail of bubbles behind the bullet? Q2. If there are bubbles, where do they come from? Q3. If there are bubbles, would the sum of the volume of all bubbles be equal to the volume of...

It is well known that the shape of soap bubbles is spherical because of the fact that a sphere is the least-area way of enclosing a given volume . If we look to a soap bubble from a frame of reference that move at relativistic speed relative to the bubbles, then ,as a result of length...

Bumping bubbles from our pre-bang past ("test" of eternal infl.) http://arxiv.org/abs/1012.1995 First Observational Tests of Eternal Inflation Stephen M. Feeney (UCL), Matthew C. Johnson (Perimeter Institute), Daniel J. Mortlock (Imperial College London), Hiranya V. Peiris (UCL) 5 pages, 2...

I've taken basic college physics and chemistry courses where I learned about entropy and thermodynamics, and I can tell you that I don't know that much :) That's my background. I understand that entropy is a description of 'randomness' and possible 'states'. When I wash my hands with soap...

I've had several discussions relating to how bubbles of air trapped in resin during the mixing process are drawn to the surface by blowing onto the surface with a straw or by passing carbon dioxide from a propane burner over the surface. How do the bubbles of trapped air even know that the...

Homework Statement A scuba diver releases a 2.50-cm-diameter (spherical) bubble of air from a depth of 11 m in a lake. Assume the temperature is constant at 16.0ºC, and the air behaves as a perfect gas. How large is the bubble when it reaches the surface? Homework Equations V2 = V1*(T2...

Air Bubbles and Terminal Velocity--> why is my answer wrong? (all work shown) Homework Statement Air bubbles of 1.0mm radius are rising from a scuba diver to the surface of the sea. Assume a water temp of 20C. a) If viscosity of water = 1.0 X 10-3 Pa.s, what is the terminal velocity of...

I have a need to know how fast gas bubbles will travel from a variable depth in a liquid to the surface. I realize there are a lot of variables here, liquid density, gas density, temp. etc... What I need is a general guideline for calculating the time with different gases through a homogenesis...

Homework Statement I am attempting to collect bubbles that are being produced under the water surface. The bubbles are natural gas, lighter than air I can collect the by bubbles by directing them into a funnel and up a hose and into an airtight collection vessel. I want to know what pressure...

What are air bubbles? In the typical coke can analogy. As you open the can carbon dioxide goes out as bubbles. Are bubbles created when there is a sudden change in pressure. Emphasis on sudden there. Thanks for the help :smile:

Hi everyone, I want to measure the flow rate of air bubbles under water for a leakage test of air brake chambers. I mean i want to keep the flow rate of bubbles under the permissible limit of 10 cubic centimeters per minute, and i have only 30 seconds to do this because of the conveyor speed...

Homework Statement Water in a tank is uniformly bubbled with small identical air bubbles each having volume V[SIZE="1"]0. A sphere of mass M and volume V floats in water due to the attachment of certain number of air bubbles in the surface.If dw is the density of water,and the minimum number...

If you poke at a soap bubble floating in air it pops. Can you make an underwater air bubble pop when you poke at it? I say no, my wife thinks you can. What say you? And why?

Which bubble shapes (spheres, tetrahedra, cubes, etc. or composite) in a foam most effectively insulates against heat?

Homework Statement Why does a bubble turn black when it pops? In terms of diffraction, interference, and Young's Experiment. Homework Equations N/A The Attempt at a Solution N/A

Hello, I am wondering what a bubble really is, considering a case of an air bubble in water as an example, what leads to the spherical appearance? Why it doesn't blows up within the liquid? thanks in advance.

When one pour sparkling wine in a glass...the air bubbles, which are formed always in the bottom (or bottom surface of glass) of the glass surface and travels upwards in a smooth line.. I was wondering..is there any good explanation (why these bubbles are always formed in bottom) in terms of...

When a small bubble comes in contact with a larger bubble, what happens to their size? (a) smaller bubble becomes smaller & eventually vanishes while larger one becomes larger (b) both bubbles increase in size (c) both bubbles decrease in size (d) larger bubble becomes smaller while smaller...

I'm looking for some stuff concerning the physics and mathematics of soap films and soap bubbles - I mean things like the surface tension mechanism, Young-Laplace equation etc. and the mathematical side of the subject, i.e. minimal surfaces, mean curvature etc. I know that there are two nice...

How does dissvoled gas bubbles move in solution? I want to do a computer simulation on nucleation so i am trying to figure this out.

When something is boiling, like water on a stove, where do the bubbles come from? is it from some sort of chemical reaction?

Soap Bubbles in terms of optics etc. Help needed :) Homework Statement The opening of a metal cylinder is dipped in soapy water so that a soap film forms. The cylinder is then turned so it is horizontal (and the soap film is vertical). What happens to the thickness of the soap film...

The Einstein-Strauss solution of Einstein equations is used to model a gravitationally bound system in otherwise homogeneuous FRW universe. It is a black hole at the center of an otherwise empty spherical bubble surrounded by expanding FRW matter dominated universe. The mass of the black hole...

In the video at http://www.spikedhumor.com/articles/108195/Real_Life_Creature_Assassin.html they say something about the "bubbles momentarily reach the temperature of the sun". I don't understand this bit at all, or how this mechanism works.

I heard alcohol evaporates, also the carbon dioxcide pop does the samething, am I loseing alcohol percentage when I let my beer stand?

Ok here's my problem: When I put a piece metal in a graduated cylinder filled with water to measure the metal's volume by "water displacement" I see air bubbles trapped under the metal. How do the air bubbles affect the density, mass and volume of the metal piece? Thanks. Need quick answer...

How is it that the bubbles in my favorite beverage sink, unlike any other beer. After a couple minutes of research I found that the bubbles rise in the center of the pint glass but they fall along the edges which is what you see. I understand this principle with heat convection, but not with...

Hello, In this article: http://www.deas.harvard.edu/softmat/downloads/2005-13.pdf (PDF, 175kb) The authors give a simplifed explanation of why a bubble is attracted to the walls at the surface of the liquid. I can definitely understand this explanation, but my question is why do bubbles...