Physics 102 Lab 10: Measuring optical dispersion with a prism
... called dispersive. The phenomenon whereby the index of refraction of a material measurably depends on the wavelength of the incident electro-magnetic radiation is called dispersion. Prisms and the deviation angle: An optical prism is a chunk of transparent, optically dispersive material which is typ ...
... called dispersive. The phenomenon whereby the index of refraction of a material measurably depends on the wavelength of the incident electro-magnetic radiation is called dispersion. Prisms and the deviation angle: An optical prism is a chunk of transparent, optically dispersive material which is typ ...
light
... idea that the path of light can be represented by a ray is known as the ray model of light. ...
... idea that the path of light can be represented by a ray is known as the ray model of light. ...
Electrochemical Investigations of W(CO) (L) and W(CO) (L) Complexes:
... moeity, such as Re(CO)3(LL), where LL = a polypyridyl ligand such as 2,2’-bipyridine (bpy), 1,10phenanthroline or related ligands, would be bridged to a non-emissive second metal center, W(CO)5 in this example, that undergoes reversible redox processes. Such compounds could potentially have “redox-t ...
... moeity, such as Re(CO)3(LL), where LL = a polypyridyl ligand such as 2,2’-bipyridine (bpy), 1,10phenanthroline or related ligands, would be bridged to a non-emissive second metal center, W(CO)5 in this example, that undergoes reversible redox processes. Such compounds could potentially have “redox-t ...
An apparatus for quantification of light and temperature
... coming out through the fabric and time intervals. It is clear that there is not a significant difference in the output light intensities at different intervals of times. Table 3 shows the average light cutting ability of various fabric samples. From the table it is clear that the light cutting abili ...
... coming out through the fabric and time intervals. It is clear that there is not a significant difference in the output light intensities at different intervals of times. Table 3 shows the average light cutting ability of various fabric samples. From the table it is clear that the light cutting abili ...
Lecture 14: Polarization
... are pointlike particles with no substructure can have angular momentum on their own. It is a very odd fact, but true nonetheless. Photons have spin. We say photons are particles of spin 1. The two signs for the angular momentum correspond to the two helicities of the photon. To complete the discussi ...
... are pointlike particles with no substructure can have angular momentum on their own. It is a very odd fact, but true nonetheless. Photons have spin. We say photons are particles of spin 1. The two signs for the angular momentum correspond to the two helicities of the photon. To complete the discussi ...
Ellipsometry of Biofilms - Worcester Polytechnic Institute
... interacts with a material. The complex refractive index ( ) consists of the index (n) and extinction coefficient (k) and are related as shown: ...
... interacts with a material. The complex refractive index ( ) consists of the index (n) and extinction coefficient (k) and are related as shown: ...
Light
... The History of the Photoelectric effect In late 19th century it was discovered that electrons were emitted from a zinc plate when it was exposed to ultraviolet (UV) radiation. As visible light and UV are electromagnetic (EM) waves of similar nature, the result suggests that EM radiation carries ener ...
... The History of the Photoelectric effect In late 19th century it was discovered that electrons were emitted from a zinc plate when it was exposed to ultraviolet (UV) radiation. As visible light and UV are electromagnetic (EM) waves of similar nature, the result suggests that EM radiation carries ener ...
Light
... The History of the Photoelectric effect In late 19th century it was discovered that electrons were emitted from a zinc plate when it was exposed to ultraviolet (UV) radiation. As visible light and UV are electromagnetic (EM) waves of similar nature, the result suggests that EM radiation carries ener ...
... The History of the Photoelectric effect In late 19th century it was discovered that electrons were emitted from a zinc plate when it was exposed to ultraviolet (UV) radiation. As visible light and UV are electromagnetic (EM) waves of similar nature, the result suggests that EM radiation carries ener ...
Refraction
... Use your ruler and protractor to draw a dotted normal line at the location in which the beam entered the jello. Label the angle in the air outside the jello between the beam and the normal ӨA. Label the angle inside the jello between the beam and the normal ӨB. When light (the laser beam) pa ...
... Use your ruler and protractor to draw a dotted normal line at the location in which the beam entered the jello. Label the angle in the air outside the jello between the beam and the normal ӨA. Label the angle inside the jello between the beam and the normal ӨB. When light (the laser beam) pa ...
5 December 2012 Atmospheric Phenomena Professor Carolin
... Sun above the horizon appears very briefly as a vivid and unmistakable flash of green light. The ‘green flash’ typically only lasts for about a second, is easily seen with the unaided eye. It can also be observed in the first sliver of light at sunrise, but it’s much more difficult to observe this a ...
... Sun above the horizon appears very briefly as a vivid and unmistakable flash of green light. The ‘green flash’ typically only lasts for about a second, is easily seen with the unaided eye. It can also be observed in the first sliver of light at sunrise, but it’s much more difficult to observe this a ...
ESCI 241
... of refraction. Therefore, red appears as the outer band of a primary rainbow, with the other colors following in order of decreasing wavelength. If the Sun angle is larger than 42°, a primary rainbow cannot be seen by a ground-based observer. ...
... of refraction. Therefore, red appears as the outer band of a primary rainbow, with the other colors following in order of decreasing wavelength. If the Sun angle is larger than 42°, a primary rainbow cannot be seen by a ground-based observer. ...
Elements, Compounds, and Mixtures
... A compound contains two or more different atoms joined together. A mixture contains two or more different substances that are only physically joined together, not chemically. A mixture can contain both elements and compounds. ...
... A compound contains two or more different atoms joined together. A mixture contains two or more different substances that are only physically joined together, not chemically. A mixture can contain both elements and compounds. ...
CHAPTER 1
... liquid assumes the shape of its container. For example, a given quantity of liquid water takes up a definite amount of space, but the water takes the shape of its container. Liquids have this characteristic because the particles in them are close together but can move past one another. The particles ...
... liquid assumes the shape of its container. For example, a given quantity of liquid water takes up a definite amount of space, but the water takes the shape of its container. Liquids have this characteristic because the particles in them are close together but can move past one another. The particles ...
Chapter 18 The Light Spectrum
... • The presence of this gas enables the filament to become much hotter than the filament in an ordinary incandescent bulb. • As a result, the light is much brighter and also lasts longer. ...
... • The presence of this gas enables the filament to become much hotter than the filament in an ordinary incandescent bulb. • As a result, the light is much brighter and also lasts longer. ...
Waves 3 (polarized light)
... the name implies. It is classic two-source interference, except that the sources producing the waves are not bobbers in water, or slits allowing light through, but the top and bottom of the film that light is passing through. Let’s use the example of the thin film of oil on the water of the parking ...
... the name implies. It is classic two-source interference, except that the sources producing the waves are not bobbers in water, or slits allowing light through, but the top and bottom of the film that light is passing through. Let’s use the example of the thin film of oil on the water of the parking ...
Reflection of Light
... facing mirrors at opposite ends of the laser. • One of the mirrors is coated only partially with reflective material, so it reflects most light but allows some to get through. • Some emitted light waves travel back and forth between the mirrors many times, stimulating other atoms to emit identical l ...
... facing mirrors at opposite ends of the laser. • One of the mirrors is coated only partially with reflective material, so it reflects most light but allows some to get through. • Some emitted light waves travel back and forth between the mirrors many times, stimulating other atoms to emit identical l ...
Unit 19 Lab - TTU Physics
... Is there anywhere where the rays of light reform into four point sources? If you were to place a screen behind the piece of acrylic, what would appear on the screen, as you moved the screen back? Would you see an image of the four point sources on the screen at any point? Explain. A piece of materia ...
... Is there anywhere where the rays of light reform into four point sources? If you were to place a screen behind the piece of acrylic, what would appear on the screen, as you moved the screen back? Would you see an image of the four point sources on the screen at any point? Explain. A piece of materia ...
Photopolymer
A photopolymer is a polymer that changes its properties when exposed to light, often in the ultraviolet or visible region of the electromagnetic spectrum. These changes are often manifested structurally, for example hardening of the material occurs as a result of cross-linking when exposed to light. An example is shown below depicting a mixture of monomers, oligomers, and photoinitiators that conform into a hardened polymeric material through a process called curing,.A wide variety of technologically useful applications rely on photopolymers, for example some enamels and varnishes depend on photopolymer formulation for proper hardening upon exposure to light. In some instances, an enamel can cure in a fraction of a second when exposed to light, as opposed to thermally cured enamels which can require half an hour or longer. Curable materials are widely used for medical, printing, and photoresist technologies. Changes in structural and chemical properties can be induced internally by chromophores that the polymer subunit already possesses, or externally by addition of photosensitive molecules. Typically a photopolymer consists of a mixture of multifunctional monomers and oligomers in order to achieve the desired physical properties, and therefore a wide variety of monomers and oligomers have been developed that can polymerize in the presence of light either through internal or external initiation. Photopolymers undergo a process called curing, where oligomers are cross-linked upon exposure to light, forming what is known as a network polymer. The result of photo curing is the formation of a thermoset network of polymers. One of the advantages of photo-curing is that it can be done selectively using high energy light sources, for example lasers, however, most systems are not readily activated by light, and in this case a photoinitiator is required. Photoinitiators are compounds that upon radiation of light decompose into reactive species that activate polymerization of specific functional groups on the oligomers. An example of a mixture that undergoes cross-linking when exposed to light is shown below. The mixture consists of monomeric styrene and oligomeric acrylates.Most commonly, photopolymerized systems are typically cured through UV radiation, since ultraviolet light is more energetic; however, the development of dye-based photoinitiator systems have allowed for the use of visible light, having potential advantages of processes that are more simple and safe to handle. UV curing in industrial processes has greatly expanded over the past several decades. Many traditional thermally cured and solvent-based technologies can be replaced by photopolymerization technologies. The advantages of photopolymerization over thermally cured polymerization include high rates of polymerization and environmental benefits from elimination of volatile organic solvents.There are two general routes for photoinitiation: free radical and ionic. The general process involves doping a batch of neat polymer with small amounts of photoinitiator, followed by selective radiation of light, resulting a highly cross-linked product. Many of these reactions do not require solvent which eliminates termination path via reaction of initiators with solvent and impurities, in addition to decreasing the overall cost.