Fluorescence
... The resin (part A) for the epoxy used at U of T is dosed 1% by weight with solvent yellow 43, and stirred for a few hours (with a magnetic stir-bar) until all of the dye has dissolved. The solubility of the dye in the resin hasn’t been carefully measured, but isn’t much higher than 1%. At a dosage ...
... The resin (part A) for the epoxy used at U of T is dosed 1% by weight with solvent yellow 43, and stirred for a few hours (with a magnetic stir-bar) until all of the dye has dissolved. The solubility of the dye in the resin hasn’t been carefully measured, but isn’t much higher than 1%. At a dosage ...
PHYS_3342_120611
... medium – electrons respond to the wave and produce their own timevarying fields Such responses are medium-specific and generally depend on the frequency of the wave (because electrons have their own natural frequencies of motion in this particular medium) Some frequency ranges can be prohibited – th ...
... medium – electrons respond to the wave and produce their own timevarying fields Such responses are medium-specific and generally depend on the frequency of the wave (because electrons have their own natural frequencies of motion in this particular medium) Some frequency ranges can be prohibited – th ...
Light and Optics Unit Test
... c. clearer d. larger 9. A ray of light could be described as: a. light that passes through any substance b. a straight line that represents the path of a wave of light c. light that is bent as it passes through a translucent object d. an explanation based on observation of how light behaves 10. In t ...
... c. clearer d. larger 9. A ray of light could be described as: a. light that passes through any substance b. a straight line that represents the path of a wave of light c. light that is bent as it passes through a translucent object d. an explanation based on observation of how light behaves 10. In t ...
Reflect/Refract
... Geometric Optics and the Ray Approximation •The wave calculations we have done assume i = r the mirror is infinitely large •If the wavelength is sufficiently tiny compared to objects, this might be a good approximation i r •For the next week, we will always make this approximation Mirror •It’s ...
... Geometric Optics and the Ray Approximation •The wave calculations we have done assume i = r the mirror is infinitely large •If the wavelength is sufficiently tiny compared to objects, this might be a good approximation i r •For the next week, we will always make this approximation Mirror •It’s ...
1. An object of mass 3 kg is placed on a smooth plane inclined at 30º
... 12. Two metal rods of the same Young modulus Y and the same cross-sectional area A, but of different lengths L and 2L respectively, are joined together end-to-end to form a rod of length 3L. What are the Young modulus and the force constant of the composite rod? ...
... 12. Two metal rods of the same Young modulus Y and the same cross-sectional area A, but of different lengths L and 2L respectively, are joined together end-to-end to form a rod of length 3L. What are the Young modulus and the force constant of the composite rod? ...
living with the lab
... enclosure to properly direct the IR light. Your kit includes the black pieces shown. Insert the legs of the LED through the holes in the longer black cylinder, and then install the smaller top piece over the exposed end of the LED. If you don’t have a shield, a piece of paper can be rolled up and ta ...
... enclosure to properly direct the IR light. Your kit includes the black pieces shown. Insert the legs of the LED through the holes in the longer black cylinder, and then install the smaller top piece over the exposed end of the LED. If you don’t have a shield, a piece of paper can be rolled up and ta ...
ray_optics_su2014
... where “n” is index of refraction (about 1.5 for glass). • As a wave (such as light) in media 1, with index n1, enters a denser media (index n2) where the speed changes, part of the wave will be reflected. Reflected intensity given by: • For glass (n=1.5) we calculate that 4% is reflected, 96% transm ...
... where “n” is index of refraction (about 1.5 for glass). • As a wave (such as light) in media 1, with index n1, enters a denser media (index n2) where the speed changes, part of the wave will be reflected. Reflected intensity given by: • For glass (n=1.5) we calculate that 4% is reflected, 96% transm ...
The Photoelectric Effect
... release an electron from a metal plate required a minimal energy that could only be transferred by a photon of energy equal or greater than that minimal threshold energy (i.e. the wavelength of the light had to be a sufficiently short). Each photon of blue light released an electron. But all red pho ...
... release an electron from a metal plate required a minimal energy that could only be transferred by a photon of energy equal or greater than that minimal threshold energy (i.e. the wavelength of the light had to be a sufficiently short). Each photon of blue light released an electron. But all red pho ...
refraction ppt_2010
... If you were that “disabled” Archer Fish • If you are an Archer Fish, born without the natural talent of “solving the physics of refraction”, what would you do to compensate your lack of talents? ...
... If you were that “disabled” Archer Fish • If you are an Archer Fish, born without the natural talent of “solving the physics of refraction”, what would you do to compensate your lack of talents? ...
Solution of theoretical problem 2
... On the right side of above equation the first term shows the phase difference of the light wave accumulated during its propagation in air, the second term shows the phase difference of the light wave accumulated during its propagation in the unusual medium, while the third term accounts for the phas ...
... On the right side of above equation the first term shows the phase difference of the light wave accumulated during its propagation in air, the second term shows the phase difference of the light wave accumulated during its propagation in the unusual medium, while the third term accounts for the phas ...
Refraction - Snell`s Law, Internal Reflection, Dispersion (PowerPoint)
... To get a feel for how much information that is, consider the fact that a single ordinary TV transmission is equivalent to about 1300 simultaneous telephone conversations, which in turn, is roughly equal to sending more than 2500 typewritten pages each second! (See QWEST advertisement). So, at presen ...
... To get a feel for how much information that is, consider the fact that a single ordinary TV transmission is equivalent to about 1300 simultaneous telephone conversations, which in turn, is roughly equal to sending more than 2500 typewritten pages each second! (See QWEST advertisement). So, at presen ...
The Photoelectric Effect
... Photoelectric cell or photocell is a device whose electrical characteristics (e.g., current, voltage, or resistance) vary when light is incident upon it. The most common type consists of two electrodes separated by a light-sensitive semiconductor material. A battery or other voltage source connected ...
... Photoelectric cell or photocell is a device whose electrical characteristics (e.g., current, voltage, or resistance) vary when light is incident upon it. The most common type consists of two electrodes separated by a light-sensitive semiconductor material. A battery or other voltage source connected ...
Introduction
... note: Electrons can also be emitted from metal surface by heating up the metal, e.g. by running a large current through it. This process is called thermal emission. It is used, for example, in vacuum tubes for generating free electrons. In this case the heat (thermal energy) is providing the energy ...
... note: Electrons can also be emitted from metal surface by heating up the metal, e.g. by running a large current through it. This process is called thermal emission. It is used, for example, in vacuum tubes for generating free electrons. In this case the heat (thermal energy) is providing the energy ...
Spectrophotometry and its Applications in Microbiology
... Certain covalent bonds in molecules are able to absorb energy at particular wavelengths ranging from infrared to ultraviolet. This absorbance is readily detected by using some kind of spectrometer which sends light of a specific wavelength through the sample; if the chemical absorbs energy, then the ...
... Certain covalent bonds in molecules are able to absorb energy at particular wavelengths ranging from infrared to ultraviolet. This absorbance is readily detected by using some kind of spectrometer which sends light of a specific wavelength through the sample; if the chemical absorbs energy, then the ...
Biomolecular and cellular research devices.
... molecules can take place with no or very little change of wavelength. The intensity of the scattered light depends on molecular weight and also scattering angle which can be used for estimation of the macromolecule shape. Raman spectrometry. In scattering of photons a small change of wavelength oc ...
... molecules can take place with no or very little change of wavelength. The intensity of the scattered light depends on molecular weight and also scattering angle which can be used for estimation of the macromolecule shape. Raman spectrometry. In scattering of photons a small change of wavelength oc ...
Chapter 7:
... 2) If two or more terms have the same multiplicity, the term having the highest value of L has the lowest energy 3) For terms having the same multiplicity and L, the level with the lowest value of J is the lower in energy if the sublevel is less than half filled, and the level with the highest value ...
... 2) If two or more terms have the same multiplicity, the term having the highest value of L has the lowest energy 3) For terms having the same multiplicity and L, the level with the lowest value of J is the lower in energy if the sublevel is less than half filled, and the level with the highest value ...
EM Waves and Color
... rainbow. • Sunlight is an example of white light. – White is not a color, but a combination of all colors. ...
... rainbow. • Sunlight is an example of white light. – White is not a color, but a combination of all colors. ...
Polarization
... • The tiny particles in the atmosphere (dust, clumps of air molecules, microscopic water droplets) are better at scattering shorter wavelength blue light than the longer wavelength red light. • As sunlight passes through the atmosphere, the scattered blue light give the atmosphere an overall blue gl ...
... • The tiny particles in the atmosphere (dust, clumps of air molecules, microscopic water droplets) are better at scattering shorter wavelength blue light than the longer wavelength red light. • As sunlight passes through the atmosphere, the scattered blue light give the atmosphere an overall blue gl ...
Essential Questions and Answers: What is light? Light is a form of
... Light striking an object is either absorbed or reflected. For example, a blue ball will absorb all wavelengths of light except the blue wavelengths which are reflected. There's another factor involved; the color we perceive depends upon the light source. To see a color accurately, the color must be ...
... Light striking an object is either absorbed or reflected. For example, a blue ball will absorb all wavelengths of light except the blue wavelengths which are reflected. There's another factor involved; the color we perceive depends upon the light source. To see a color accurately, the color must be ...
4.5 Band Gap Energies and Spectrometry
... The amount of bending depends on the spacing and size of the lines on the diffraction grating. Light can be produced in a number of different ways. The filament of a light bulb is heated by passing a current through it. This heat is radiated as visible and non-visible light. An LED or light emitting ...
... The amount of bending depends on the spacing and size of the lines on the diffraction grating. Light can be produced in a number of different ways. The filament of a light bulb is heated by passing a current through it. This heat is radiated as visible and non-visible light. An LED or light emitting ...
The Refraction of Light
... • Recall: Light bends away from the normal when it speeds up at the boundary of two media (example: as light travels from water to air) • As angle of incidence increases, the angle of refraction increases • The angle of incidence which results in the angle of refraction becoming 90o is known as the ...
... • Recall: Light bends away from the normal when it speeds up at the boundary of two media (example: as light travels from water to air) • As angle of incidence increases, the angle of refraction increases • The angle of incidence which results in the angle of refraction becoming 90o is known as the ...
Chapter 20-Light The Nature of Light Visible Light Is a Form of
... a. Radiation=movement of energy from one place to another i. Particle radiation, mechanical radiation, electromagnetic radiation b. Electromagnetic radiation is classified by amount of energy being moved. Electromagnetic spectrum includes radio waves, microwaves, infrared rays, visible light, ultrav ...
... a. Radiation=movement of energy from one place to another i. Particle radiation, mechanical radiation, electromagnetic radiation b. Electromagnetic radiation is classified by amount of energy being moved. Electromagnetic spectrum includes radio waves, microwaves, infrared rays, visible light, ultrav ...
final1-executive-summary-harwin
... window glazing and the frame. Weight and energy demand reduction over the life cycle is achieved by selection of lightweight materials with low embodied energy and by simultaneous improvement of the mechanical and thermal as well as optical performance of these materials by utilization of most advan ...
... window glazing and the frame. Weight and energy demand reduction over the life cycle is achieved by selection of lightweight materials with low embodied energy and by simultaneous improvement of the mechanical and thermal as well as optical performance of these materials by utilization of most advan ...
Lecture 33 : Chiral molecules and Optical Activity
... Chirality Simply stated, when a molecule or any geometric object and it’s mirror image are not identical (super-imposable) we call these objects chiral. Examples are: right handed or left handed helices, carbon atom covalently bonded to 4 different substituients. Most important biological molecules ...
... Chirality Simply stated, when a molecule or any geometric object and it’s mirror image are not identical (super-imposable) we call these objects chiral. Examples are: right handed or left handed helices, carbon atom covalently bonded to 4 different substituients. Most important biological molecules ...
Transparency and translucency
In the field of optics, transparency (also called pellucidity or diaphaneity) is the physical property of allowing light to pass through the material without being scattered. On a macroscopic scale (one where the dimensions investigated are much, much larger than the wavelength of the photons in question), the photons can be said to follow Snell's Law. Translucency (also called translucence or translucidity) is a super-set of transparency: it allows light to pass through, but does not necessarily (again, on the macroscopic scale) follow Snell's law; the photons can be scattered at either of the two interfaces where there is a change in index of refraction, or internally. In other words, a translucent medium allows the transport of light while a transparent medium not only allows the transport of light but allows for image formation. The opposite property of translucency is opacity. Transparent materials appear clear, with the overall appearance of one color, or any combination leading up to a brilliant spectrum of every color.When light encounters a material, it can interact with it in several different ways. These interactions depend on the wavelength of the light and the nature of the material. Photons interact with an object by some combination of reflection, absorption and transmission.Some materials, such as plate glass and clean water, transmit much of the light that falls on them and reflect little of it; such materials are called optically transparent. Many liquids and aqueous solutions are highly transparent. Absence of structural defects (voids, cracks, etc.) and molecular structure of most liquids are mostly responsible for excellent optical transmission.Materials which do not transmit light are called opaque. Many such substances have a chemical composition which includes what are referred to as absorption centers. Many substances are selective in their absorption of white light frequencies. They absorb certain portions of the visible spectrum while reflecting others. The frequencies of the spectrum which are not absorbed are either reflected back or transmitted for our physical observation. This is what gives rise to color. The attenuation of light of all frequencies and wavelengths is due to the combined mechanisms of absorption and scattering.Transparency can provide almost perfect camouflage for animals able to achieve it. This is easier in dimly-lit or turbid seawater than in good illumination. Many marine animals such as jellyfish are highly transparent.