Glass Definition and 658 Threads

If I look through glass, the photons I see have encountered electrons. Is the photon that went into an electron the same one that comes out?

Homework Statement I'm doing some preliminary research for a potential IB extended essay topic. It involves thermal stresses in fused glass; details aren't that important right now. But I need to find a table, equation, or SOME sort of reference that gives me the relationship between the...

A pair of slits separated by d = 1.30 mm is illuminated with light of l = 610 nm wavelength and falls on a screen L = 2.00 m away. A piece of glass with index of refraction n = 2.2 is placed at one slit. If the maxima shift is Dx/2, and falls on a minimum, what was the minimum glass thickness...

Hello everyone, I am an undergratude student doing to research and I am making dirty Au films. At certian concentrations of Fe (say >.5%) this Au-Fe is showing charateristics of a sping glass. I am attempting to learn what exactly a spin glass is and what its trends look like (resistance vs...

Consider a ray at the interface air and glass (n = 1.5). We know that incident angle i and refracted angle r are related by sin i = 1.5 sin r Can we some how show the relationship between i and r is r = m i + c (straight line)? If you look at the following data, it follows the Snell's...

Dear PFers, could somebody provide an update on the searches for quark gluon plasma, the color glass condensate interpretation, and/or their conceptual basis ? I have found a few big documents, if somebody knows where to find the latest review it would be most welcome. I would like a preview...

Homework Statement What is the electric force between a glass ball with 3.5 µC of charge and a rubber ball with -5.0 µC of charge when they are separated by 5 cm? Homework Equations Colombs Law: F(electric)=K((q(1)*q(2))/r^2) K=8.99E9 The Attempt at a Solution This seems like a...

Hello! As of this week, I have left graduate school. I just completed my first year as an Astrophysics Ph.D. student, but between financial constraints and general unease within my program, I have decided to go another direction. I have a bachelors in Physics, and I have interned at Kitt...

A glass is located in front of concave mirror as shown in figure. The gap between mirror and glass is neglected. In this conditions, where is the final image of matter? http://i26.tinypic.com/2a6w6es.jpg The answer of above problem is not match with mine. I need help. I draw the beams...

A thin piece of glass with an index of refraction of n2 = 1.50 is placed on top of a medium that has an index of refraction n3 = 2.00. A beam of light traveling in air (n1 = 1.00) shines perpendicularly down on the glass. The beam contains light of only two colors, blue light with a wavelength...

I was wondering if anyone on here could give me a detailed explanation on how light passes through glass. I'm a junior in physics at a university, so it's OK if the explanation is complex.

Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. This works through a process known as multiphoton absorption. In this process, several photons are absorbed at the same time. If very...

Greetings, Just a quick question. I would like to know what order of magnitude the etch rate will be for a solution with a pH of 14 on silica glass (flat surface at room temp) - are we talking nm/hr? microns/hr? mm/hr? Thanks, Claude.

Homework Statement One end of a long glass rod is ground to a convex hemispherical shape. This glass has an index of refraction of 1.53. When a small leaf is placed 20.3 cm in front of the center of the hemisphere along the optic axis, an image is formed inside the glass 9.08 cm from the...

Which travels more slowly in glass, red light or violet light? Violet...right? Thanks

Hi Guys, I am new to this forum and have a "quick" question. Say you had a laser pointer and you directed the laser through a glass block and then to a LDR why would the light intensity recorded be lower than without the glass block? What is happening to the light when it is in the glass...

Direction of travel in glass...please please HELP! Homework Statement A 0.95-cm-thick layer of water stands on a horizontal slab of glass. A light ray in the air is incident on the water 58° from the normal. What is the ray's direction of travel in the glass? (Give the answer in degrees.)...

I would want to know what an inorganic glass is an about its solidification process or references to where i could find information about it.

What color light is transmitted through a piece of red glass? I thought it would be red?

Hi, I have been conducting a lab experiment using a piece of latex glove to stimulate a tone from a wine glass that is rotating on a turntable. I used the equation \lambda=v/f (using an audio spectrometer setup to find f) to find the wavelength of the emitted tone. We expected the top...

http://littleshop.physics.colostate.edu/onlineexperiments/Pyrex%20and%20Oil.html I want to show the math of what happens when the pyrex glass rod is immersed into wesson oil making the bend in light identical, but I don't know where to start? Suggestions? Or equations you believe I should...

Homework Statement The drawing shows a rectangular block of glass (n = 1.52) surrounded by liquid carbon disulfide (n = 1.63). A ray of light is incident on the glass at point A with a = 36.0° angle of incidence. At what angle of refraction does the ray leave the glass at point B? Please...

Homework Statement A beam of light, wavelength 625 nm in air, is incident on a block of flint glass at an angle of 31.5. Find: A) the speed of light in the flint glass Homework Equations Don't know where to start The Attempt at a Solution refractive index of 1.61 625 / w = 1.61...

Why when sometimes touch the glass balloon around the light bulb, it is hot?

Homework Statement Using a microscope, smoke particles can be seen moving inside a glass tube. They appear as tiny spots of light that move in various directions. The air molecules inside the glass tube cannot be seen with the aid of the microscope. a) State why a microscope is needed to...

can i use a watch glass as a primary mirror of dobsonian telescope?

Why can visible light pass among glass? Why glass is is transparent to visible light?

Why I can burn a paper with magnifying glass and sun? Isn't it something to do with the electromagnetic field (because light is itself electromagnetic field)?

If you fill a glass with water and hit it on the side with a knife then you get a higher pitch the more you fill it up. Why is this? When you hit the glass you aren't really making the air in the glass vibrate as you do when you blow over the top of a bottle, you're just making the glass...

Homework Statement An object is kept at a distance d=2.5cm from a Glass sphere of radii R=10 cm .Find the final image of the point object? \mu =1.5Homework Equations \frac{\mu_{2}}{v}-\frac{\mu_{1}}{u}=\frac{\mu_{2}-\mu_{1}}{R}The Attempt at a Solution it is a simple question where we have two...

If 0.22L of tea at 95 degrees C, is poured into a 150g glass cup initially at 25 degrees C, what will the final temperature be, assuming no heat is lost to the surroundings?

A double-slit experiment is set up using a helium-neon laser (lambda =633nm) . Then a very thin piece of glass ( n=1.50 ) is placed over one of the slits. Afterward, the central point on the screen is occupied by what had been the m = 15.0 dark fringe. How thick is the glass? I really need...

If a glass of water is resting on a table and there is a piece of paper or cloth or whatever under the glass, and you pull the paper/cloth really fast, the glass does not move. Can someone please explain the physics of this to me. THNX

Glass is Green? when the glass is viewed at their edge , it looks green . 1.why it is green when viewed at the edge ? 2.Why its not green when we view other than the edge ? i think polarization is the effect but if so,how does it take place . please help me in this...

Bought these two glass bulbs at a local art fair, the other month Size and shape as in Christmass tree balls, of hand blown glass but with a complex delicate glass object inside. Looks like ship in a bottle, but how do you get an object like that inside during the glass blowing...

http://session.masteringphysics.com/problemAsset/1011752/15/1011752A.jpg A glass soda bottle is emptied of soda and filled to the very top with water. A cork is carefully fitted into the top of the bottle, leaving no air between the cork and the water. View Figure The top of the bottle has...

Problem: red light of wavelength 560nm is passed from air into glass where its velocity is 1.96 x 10^8 m/s. (c=3*10^8) Find the frequency of the light in air and the wavelength of the light in glass. Can someone please tell me what c is and what formulas i need to use. thanks

Given a wine glass with angle theta, height h, what diameter ball, when placed in the wine glass will displace the most volume?

Homework Statement So I need to get a rough calculation: At what angle does drops of water start rolling down a plane of glalss. This is for my project where we are using a solar still to purify water. I just need ot get a rough calculation so I know at what angle to tilt the plane of glass...

Hello, I've been to a couple of towers in the world (CN and Blackpool) with specially build glass floors that you can safely walk/jump on. In each case, claims have been made stating that the glass is capable of withstanding a particular weight or pressure. Intuitively, I feel I would...

Sorry for misconception. Why the mirror deflects light was the question? Because of the electronic configuration and how?

Normal glasses have a larger refractive index for blue than for red. Are there special glasses that differ in this respect? Or maybe are there some minerals that behave differently, still being transparent in the visible spectrum and colorless? Thanks to tell me if you know something about...

In a local bar, a customer slides an empty beer mug down the counter for a refill. The bartender is momentarily distracted and does not see the mug, which slides off the counter and strikes the floor 1.40 m from the base of the counter. If the height of the counter is .860 m, (a) with what...

Hello! I'm stuck on this problem... A thin flat plate of partially reflecting glass is a distance (b) from a convex mirror. A point source of light (S) is placed a distance (a) in front of the plate so that its image in the partially reflecting plate coincides with its image in the mirror...

any one know bout Bulk Metallic Glass (BMG)

So I'm building this glass table, and I'm going to put a few led's around the edges so i can light up the table if i need to find something in the dark (like while watching a movie). and I want a cool way to turn on the light, so I was thinking about making a circuit that when you tap the table...

I had a glass coffee table, it was 12mm thick (approx 1/2 ") I had this table for approx 5 months when one night, it just gave off a bange and collapsed (I wasn't in the process of placing anything on it, etc, it had no chips). Some small fragments were embeded into my wife and my hands. The...

Why is glass "QM transparent"? Sorry if this is a basic question. Why is a wave state preserved through it's interaction with glass, mirrors, air, etc.? Why doesn't reflection (absorbtion then re-emission) fix the position and collapse the function? It's isn't really the same photon that...

I am having a huge problem with understanding the derivation of velocity profiles for these type of problems. The one i am having the most difficulty is the flow of oil going down vertically along the surface of a glass rod. Where p=900 kg/m^3 and u=120 mPa's. How do I start this problem?

Question Two glass plates 10.0 cm long are in contact at one end and separated at the other end by a thread 0.0500 mm in diameter. Light containing the two wavelengths 400 nm and 600 nm is incident perpendicularly. At what distance from the contact point is the next dark fringe? Relevant...