From a flat mirror, designer light — Harvard School of Engineering
... "Using designer surfaces, we've created the effects of a fun-house mirror on a flat plane," says co-principal investigator Federico Capasso, Robert L. Wallace Professor of Applied Physics and Vinton Hayes Senior Research Fellow in Electrical Engineering at SEAS. "Our discovery carries optics into ne ...
... "Using designer surfaces, we've created the effects of a fun-house mirror on a flat plane," says co-principal investigator Federico Capasso, Robert L. Wallace Professor of Applied Physics and Vinton Hayes Senior Research Fellow in Electrical Engineering at SEAS. "Our discovery carries optics into ne ...
to Light
... The principal axis is a construction line that is perpendicular to and passes through the centre of the mirror, O. The principal focus, F is the point through which all rays travelling parallel to the principal axis before reflection pass through or appear to come from after reflection. The focal le ...
... The principal axis is a construction line that is perpendicular to and passes through the centre of the mirror, O. The principal focus, F is the point through which all rays travelling parallel to the principal axis before reflection pass through or appear to come from after reflection. The focal le ...
The Hong Kong Polytechnic University
... Lloyd’s mirror is used with sodium light (=589.3 nm) and the slit placed 3 mm above the reflecting surface and 3 m from the screen. Find the position of the first bright fringe above the level of the reflecting surface. A dark fringe occurs at the level of the reflecting surface. ...
... Lloyd’s mirror is used with sodium light (=589.3 nm) and the slit placed 3 mm above the reflecting surface and 3 m from the screen. Find the position of the first bright fringe above the level of the reflecting surface. A dark fringe occurs at the level of the reflecting surface. ...
Reference fibres and artefacts
... Length Reference Fibres (LRF) are well adapted to the calibration of the distance scale of singlemode and multimode Optical Time domain Reflectometers (OTDR), according to IEC 61746. Our LRF consists of a spool of fibre, which is mounted in a protective case for an optimum stability of the reference ...
... Length Reference Fibres (LRF) are well adapted to the calibration of the distance scale of singlemode and multimode Optical Time domain Reflectometers (OTDR), according to IEC 61746. Our LRF consists of a spool of fibre, which is mounted in a protective case for an optimum stability of the reference ...
Imaging complex structures with diffuse light
... have shown that simple shapes can be imaged in an experiment using an optically-thin sample by employing time gating of early-arriving photons [27]. However, this approach uses photons that travel ballistically through the sample and is therefore not useful in optically thick tissues such as breast ...
... have shown that simple shapes can be imaged in an experiment using an optically-thin sample by employing time gating of early-arriving photons [27]. However, this approach uses photons that travel ballistically through the sample and is therefore not useful in optically thick tissues such as breast ...
Lumalive Evaluation Kit
... In order to achieve a better optical effect, and more closely blended pixels, a fabric with appreciable optical diffusion properties can be put on top of the display; Optical diffusion is the spreading out of light by a material. The amount of diffusion depends on the density, the structure and the ...
... In order to achieve a better optical effect, and more closely blended pixels, a fabric with appreciable optical diffusion properties can be put on top of the display; Optical diffusion is the spreading out of light by a material. The amount of diffusion depends on the density, the structure and the ...
Long-Distance Optical Fiber Sensor Systems
... Fiber Bragg grating (FBG) fiber sensors are very attractive in many applications due to their high versatile advantages such as high sensitivity, electro-magnetic immunity, compactness, high resolution and high optical signal-to-noise ratio (SNR) against the noise. Because of the noise and loss indu ...
... Fiber Bragg grating (FBG) fiber sensors are very attractive in many applications due to their high versatile advantages such as high sensitivity, electro-magnetic immunity, compactness, high resolution and high optical signal-to-noise ratio (SNR) against the noise. Because of the noise and loss indu ...
EEE440 Modern Communication Systems Optical Fibre
... Consequently, there is no energy lost to heat by having these modes leak into the cladding. Attenuation is not significant. Also, since the input signal is confined to a single ray path, that of the lowest order mode, there is little time dispersion Less time dispersion means higher bandwidth and th ...
... Consequently, there is no energy lost to heat by having these modes leak into the cladding. Attenuation is not significant. Also, since the input signal is confined to a single ray path, that of the lowest order mode, there is little time dispersion Less time dispersion means higher bandwidth and th ...
Questacon Wonderworks Teacher Notes
... Why do visual illusions work even though we know that what we’re ‘seeing’ is not possible? What’s your favourite visual illusion? Can you make the frozen shadow appear darker? Why does the shadow fade? If we start the pendulums swinging very gently, how do they change their swinging patterns? What m ...
... Why do visual illusions work even though we know that what we’re ‘seeing’ is not possible? What’s your favourite visual illusion? Can you make the frozen shadow appear darker? Why does the shadow fade? If we start the pendulums swinging very gently, how do they change their swinging patterns? What m ...
Film Screen Q & A
... the addition of starter to the developer replenishment tank, which may not result in optimum processing of film. It does not involve daily draining. ...
... the addition of starter to the developer replenishment tank, which may not result in optimum processing of film. It does not involve daily draining. ...
Optical Properties of Colloids
... about 1.5 are attainable. So that, for light of wavelength 600 nm, this would permit a resolution limit of about 200 nm (0.2 µm). But, since the human eye can readily distinguish objects some 0.2 mm (200 µm) apart there is little advantage in using an optical microscope. ...
... about 1.5 are attainable. So that, for light of wavelength 600 nm, this would permit a resolution limit of about 200 nm (0.2 µm). But, since the human eye can readily distinguish objects some 0.2 mm (200 µm) apart there is little advantage in using an optical microscope. ...
BPM Blatt 7
... Answer c) Often, the trap must be moved with respect to the specimen, which can be done either by moving the specimen or by moving the beam. Specimen can be positioned in the x-y plane by moving the microscope stage in the conventional way while leaving the trap fixed on the optic axis. This is espe ...
... Answer c) Often, the trap must be moved with respect to the specimen, which can be done either by moving the specimen or by moving the beam. Specimen can be positioned in the x-y plane by moving the microscope stage in the conventional way while leaving the trap fixed on the optic axis. This is espe ...
Mass Transport Laboratory
... apply a known mathematical analysis to back out the desired quantity. Overview: You will need some way to measure concentration of a substance, which will be an optical technique where the attenuation of the light passed through a substance depends on the concentration of the species. You will then ...
... apply a known mathematical analysis to back out the desired quantity. Overview: You will need some way to measure concentration of a substance, which will be an optical technique where the attenuation of the light passed through a substance depends on the concentration of the species. You will then ...
Titel
... Isolator: used in systems at the output of amplifiers and lasers to prevent reflections Filter: to multiplex and demultiplex wavelengths in a WDM system, and to provide equalization of the gain and filtering of noise in optical amplifier MUX & DEMUX: MUX combines signals at different wavelengths on ...
... Isolator: used in systems at the output of amplifiers and lasers to prevent reflections Filter: to multiplex and demultiplex wavelengths in a WDM system, and to provide equalization of the gain and filtering of noise in optical amplifier MUX & DEMUX: MUX combines signals at different wavelengths on ...
Lecture 5. Confocal microscopy and instrumentation I
... M2 is a dimensionless parameter to describe how “clean” is the mode of the laser beam, i.e., how close is it to a true Gaussian beam. Very good quality laser beam from low power He-Ne laser can have a M2 ~1.05. Most lasers does not have such ideal beam. ...
... M2 is a dimensionless parameter to describe how “clean” is the mode of the laser beam, i.e., how close is it to a true Gaussian beam. Very good quality laser beam from low power He-Ne laser can have a M2 ~1.05. Most lasers does not have such ideal beam. ...
Basic Fiber Optic Theory
... the various fiber-optic parameters (and the technical terms), further, the reasons on how to choose the right optical fiber cable, how to install a fiber network, how cables and fibers are spliced and measured. Much of the second day is devoted to FTTX networks. ...
... the various fiber-optic parameters (and the technical terms), further, the reasons on how to choose the right optical fiber cable, how to install a fiber network, how cables and fibers are spliced and measured. Much of the second day is devoted to FTTX networks. ...