Human Vision: Electrophysiology and Psychophysics

... Human Vision: Electrophysiology and Psychophysics ...

... Human Vision: Electrophysiology and Psychophysics ...

Refraction, Lenses, Aberrations

... A lens is a piece of glass (plastic) with two refracting surfaces, which are either curved (e.g., a segment of a sphere) or plain. Lenses are used to form images by refraction in optical instruments (microscopes, telescopes, cameras, etc.) ...

... A lens is a piece of glass (plastic) with two refracting surfaces, which are either curved (e.g., a segment of a sphere) or plain. Lenses are used to form images by refraction in optical instruments (microscopes, telescopes, cameras, etc.) ...

Microscopy - u.arizona.edu

... b. Light Source and Diaphragm A. Need consistent source of light; Diaphragm regulates amount of light – helps with contrast B. Light source can also be filtered, typically to blue-violet, why? c. Stage and Focusing Knobs A. Knobs move stage, which in turn moves slide, which in turn moves object – go ...

... b. Light Source and Diaphragm A. Need consistent source of light; Diaphragm regulates amount of light – helps with contrast B. Light source can also be filtered, typically to blue-violet, why? c. Stage and Focusing Knobs A. Knobs move stage, which in turn moves slide, which in turn moves object – go ...

Renaissance Painters & the Camera Obscura

... The basic camera obscura consists of a room with a small opening, the images are projected both upside down and reversed ...

... The basic camera obscura consists of a room with a small opening, the images are projected both upside down and reversed ...

Image processing in Spectral Domain Optical Coherence

... Fourier transform switches one complex valued function into another. ◦ Transforming k (wave number) into actual space. ...

... Fourier transform switches one complex valued function into another. ◦ Transforming k (wave number) into actual space. ...

Depth of Field

... Depth of Field The distance range between the nearest and farthest objects that appear in acceptably sharp focus. Depth of field depends on the lens opening, the focal length of the lens, and the distance from the lens to the subject. ...

... Depth of Field The distance range between the nearest and farthest objects that appear in acceptably sharp focus. Depth of field depends on the lens opening, the focal length of the lens, and the distance from the lens to the subject. ...

Chapter 25 Optical Instruments

... •Shutter speed refers to the speed of the shutter opening and closing. •F-stop controls the amount of light coming into the light-tight box, by controlling the size of the opening •F-stop=f/D ...

... •Shutter speed refers to the speed of the shutter opening and closing. •F-stop controls the amount of light coming into the light-tight box, by controlling the size of the opening •F-stop=f/D ...

Physics 422 - Spring 2015 - Assignment #5

... 3. (a) Calculate the distance to the object focal point, fo , and the image focal point fi for a single spherical concave refracting surface with radius of curvature R = −10 cm, made of a material with index of refraction n2 = 1.5, and with air (n1 = 1) on the object side. (b) Calculate fo and fi f ...

... 3. (a) Calculate the distance to the object focal point, fo , and the image focal point fi for a single spherical concave refracting surface with radius of curvature R = −10 cm, made of a material with index of refraction n2 = 1.5, and with air (n1 = 1) on the object side. (b) Calculate fo and fi f ...

Unit 7 Lab Review - Harrison High School

... speed of sound? 2. In this lab what factor did we have to use to find the theoretical value for the speed of sound? ...

... speed of sound? 2. In this lab what factor did we have to use to find the theoretical value for the speed of sound? ...

Fraunhofer diffraction from gratings In this exercise we use a two

... While Bragg’s law is given by the expression 2d sin n , we get for a two-dimensional grating that d sin 1 sin 2 n . Here , 1 are 2 are the Bragg angle, the angle of incidence and the angle of exit, is the wavelength, d the distance between the lines in the grating (periodicity ...

... While Bragg’s law is given by the expression 2d sin n , we get for a two-dimensional grating that d sin 1 sin 2 n . Here , 1 are 2 are the Bragg angle, the angle of incidence and the angle of exit, is the wavelength, d the distance between the lines in the grating (periodicity ...

ME 557 Howmwork #1

... 0.25, and trhe design requires that the total distance from the source to the fiber be 100mm, which lenses are appropriate (find lens’s focal length, f-number and numeric apeture magnification and clear aperature )? ...

... 0.25, and trhe design requires that the total distance from the source to the fiber be 100mm, which lenses are appropriate (find lens’s focal length, f-number and numeric apeture magnification and clear aperature )? ...

File

... light passes through. The larger the aperture, the greater the amount of light that can be collected by the camera. Almost all cameras use a convex lens to refract light rays onto a light detector ...

... light passes through. The larger the aperture, the greater the amount of light that can be collected by the camera. Almost all cameras use a convex lens to refract light rays onto a light detector ...

Light and Optics Unit

... understand and apply the terms center of curvature, focus, focal length, principal axis, and vertex as they apply to curved mirrors understand the difference between concave (converging) and convex (diverging mirrors) be able to locate the image of an object using ray diagrams and describe its ch ...

... understand and apply the terms center of curvature, focus, focal length, principal axis, and vertex as they apply to curved mirrors understand the difference between concave (converging) and convex (diverging mirrors) be able to locate the image of an object using ray diagrams and describe its ch ...

Entry Task

... Refraction and Rainbows • Rainbows are cause by refraction and reflection of light through spherical water drops which act as prisms. – Like a prism, water drops separate the wavelengths of sunlight to produce a spectrum. – Unlike a prism, only one color reaches your eye from each drop. • Red appea ...

... Refraction and Rainbows • Rainbows are cause by refraction and reflection of light through spherical water drops which act as prisms. – Like a prism, water drops separate the wavelengths of sunlight to produce a spectrum. – Unlike a prism, only one color reaches your eye from each drop. • Red appea ...

Part 1

... fields oscillate in perpendicular directions and the wave travels in a direction perpendicular to each field’s oscillation axis. For a wave traveling along the x-axis in a non-conducting medium, the fields obey the wave equations of the form ...

... fields oscillate in perpendicular directions and the wave travels in a direction perpendicular to each field’s oscillation axis. For a wave traveling along the x-axis in a non-conducting medium, the fields obey the wave equations of the form ...

Light Sources

... focus it on the image plane. • But the finite diameter of the lens means some information is lost (higher spatial frequency components). ...

... focus it on the image plane. • But the finite diameter of the lens means some information is lost (higher spatial frequency components). ...

Problem Sheet

... R1 R2 (the lens-maker’s formula) making clear any assumptions or approximations. 6. If such a lens has n = 1.60, by what factor does the focal length of the lens change when using it in water (n = 1.33) instead of air? 7. Consider a light source placed at a ﬁxed distance s from a screen, such that a ...

... R1 R2 (the lens-maker’s formula) making clear any assumptions or approximations. 6. If such a lens has n = 1.60, by what factor does the focal length of the lens change when using it in water (n = 1.33) instead of air? 7. Consider a light source placed at a ﬁxed distance s from a screen, such that a ...

Problem Sheet

... R1 R2 (the lens-maker’s formula) making clear any assumptions or approximations. 6. If such a lens has n = 1.60, by what factor does the focal length of the lens change when using it in water (n = 1.33) instead of air? 7. Consider a light source placed at a fixed distance s from a screen, such that ...

... R1 R2 (the lens-maker’s formula) making clear any assumptions or approximations. 6. If such a lens has n = 1.60, by what factor does the focal length of the lens change when using it in water (n = 1.33) instead of air? 7. Consider a light source placed at a fixed distance s from a screen, such that ...

Conjugate Ratio:

... measure of lens aberrations and diffraction. All singlet lenses have significant amount of aberrations. ...

... measure of lens aberrations and diffraction. All singlet lenses have significant amount of aberrations. ...

S.6 Phy revision Quiz 1

... 5. An object is placed in front of a concave lens and an image is formed. The image must be ____________, ____________ and ____________. 6. Dispersion occurs when white light passes through a prism. This is because A different colours of light are reflected at different angles. B different colours ...

... 5. An object is placed in front of a concave lens and an image is formed. The image must be ____________, ____________ and ____________. 6. Dispersion occurs when white light passes through a prism. This is because A different colours of light are reflected at different angles. B different colours ...