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Ray Optics - Sakshi Education
Ray Optics - Sakshi Education

... is called a reflector. The amount of light reflected depends on (i) the angle of incidence and (ii) the nature of the two media. 7. Laws of reflection : i) The incident ray, the normal to the reflecting surface at the point of incidence and the reflected ray, all lie in one plane. ii) The angle of i ...
Geometric Optics
Geometric Optics

Pdf - Text of NPTEL IIT Video Lectures
Pdf - Text of NPTEL IIT Video Lectures

Preview of “ZEISS Microscopy Online ...Aperture and Resolution”
Preview of “ZEISS Microscopy Online ...Aperture and Resolution”

... circular  rear  aperture  of  the  objective.  The  limit  up  to  which  two  small  objects  are  still  seen  as separate  entities  is  used  as  a  measure  of  the  resolving  power  of  a  microscope.  The  distance where  this  limit  is  reached  is  known  as  the  effective  resolution  o ...
to Light
to Light

The image formed is
The image formed is

Two-dimensional array of diffractive microlenses
Two-dimensional array of diffractive microlenses

... certain thickness. By repeating the process several times, we can generate multilevel phase components. It is important to note, that to create a structure with 2 k discrete levels, only k repetitive steps are required. This is achieved by a binary decomposition of the final phase pattern as visuali ...
INDIAN SCHOOL DARSAIT
INDIAN SCHOOL DARSAIT

... Image with magnification -1 means image is inverted and of the same size. Therefore, object is at 2F and the image is also at 2F on the other side of the lens. Therefore, distance between the object and its image is 4f = 60 cm f = 15 cm Object distance 2f = 30 cm. if the object is shifted towards th ...
1 Light Microscopy
1 Light Microscopy

... Low power objectives (10X, 45X) have large working distance and smaller NA High power objectives (100X) have short working distance and large NA Magnification is also a number describing by which factor an object was magnified. When this number is less than one it refers to a reduction in size, some ...
Refractive index
Refractive index

... Questions: 1) What is the refractive index? 2) What is the critical angle? 3) Where the total reflection is used? ...
Confocal microscopy with a volume holographic filter
Confocal microscopy with a volume holographic filter

... The pinhole preceding the detector in a confocal microscope is a shift-variant optical element. On-axis in-focus point-source objects are imaged exactly inside the pinhole and give maximal intensity. An out-offocus object, even when it is on axis, is equivalent to an extended source on the input foc ...
Gullstrand equation
Gullstrand equation

A high resolution ion microscope for cold atoms
A high resolution ion microscope for cold atoms

... on a camera. However, the cloud is destroyed by this method. The destruction can be suppressed when using the related method of phase contrast imaging, allowing to image the same cloud several times [6], yet at a reduced contrast. For non-destructive imaging of dilute samples with single atom sensit ...
CE-PHY II - OPTICS
CE-PHY II - OPTICS

... screen. If the screen is moved slightly away from the mirror, how should the object be moved in order to form a sharp image on the screen again ? What is the change in magnification of the image ? ...
image
image

Full-Text - Radioengineering
Full-Text - Radioengineering

Get PDF - OSA Publishing
Get PDF - OSA Publishing

Chapter 2 System Evaluation
Chapter 2 System Evaluation

... NBS-1952 RESOLUTION TEST CHART Data The NBS-1952 Resolution Test Chart is described in the : NBS circular 533, 1953 in the section titled Method of Determining the Resolution Power of Photographic Lenses. The design features of this target reduce edge effects, minimize spurious resolution and permi ...
Microscopes - OpenStax CNX
Microscopes - OpenStax CNX

... • Investigate dierent types of microscopes. • Learn how image is formed in a compound microscope. Although the eye is marvelous in its ability to see objects large and small, it obviously has limitations to the smallest details it can detect. Human desire to see beyond what is possible with the nak ...
Physics 323 Lecture Notes Part I: Optics
Physics 323 Lecture Notes Part I: Optics

Light and Optics: We just learned that light is a wave (an
Light and Optics: We just learned that light is a wave (an

... and very well understood. People thought about light as sort of like a stream of "particles" that travel in straight lines (called "light rays"). Unlike particles, waves behave in funny ways - e.g. they bend around corners. (Think of sound coming through a doorway.) But, the smaller the λ is, the we ...
A single atom in free space as a quantum aperture
A single atom in free space as a quantum aperture

... ~ f ) in the forward direcscattered (E tion (φ = 0 in Fig. 2) is much smaller than that (about 10−3 ), because the laser beam channels much more power in that direction than does the dipole field. For extreme values of f on the order of λ, the maximum scattering ratio does increase, but not beyond 5 ...
plane mirrors - Madison Public Schools
plane mirrors - Madison Public Schools

The Physics 431 Final Exam Ÿ W DECEMBER 16  2009
The Physics 431 Final Exam Ÿ W DECEMBER 16 2009

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F-number



In optics, the f-number (sometimes called focal ratio, f-ratio, f-stop, or relative aperture) of an optical system is the ratio of the lens's focal length to the diameter of the entrance pupil. It is a dimensionless number that is a quantitative measure of lens speed, and an important concept in photography. The number is commonly notated using a hooked f, i.e. f/N, where N is the f-number.
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