Astigmatic lens used in ophthalmology and eyeRACHANA KAFLE
different types and classifications of astigmatic lens used
availability of astigmatic lens
uses of astigmatic lens
advantages and disadvantages of astigmatic lens
Convex lens uses functions and types.pdfChloe Cheney
The main purpose of the convex lens is to converge the light coming from an external source, and as a result, the light is focused on the other side of the lens
Astigmatic lens used in ophthalmology and eyeRACHANA KAFLE
different types and classifications of astigmatic lens used
availability of astigmatic lens
uses of astigmatic lens
advantages and disadvantages of astigmatic lens
Convex lens uses functions and types.pdfChloe Cheney
The main purpose of the convex lens is to converge the light coming from an external source, and as a result, the light is focused on the other side of the lens
Most of the times this study confused me...so, i just put some important points in one place to easily keep them in mind..hope it will help other students as well..and inform me, if a reader find anything new to improve it further.
In this term paper most of the types of lens aberrations have been discussed and also have discussed about the use of this knowledge. The aberrations covered in this presentation are:-
Monochromatic Aberrations--Spherical Aberration, Coma, Field Curvature, Distortion, Astigmatism. Chromatic Aberrations - Longitudinal Chromatic Aberrations and Transverse Chromatic Aberrations.
Polarization and it's application in OphthalmologyRaju Kaiti
Polarization, types of polarization, mechanisms to produce polarization, Applications of polarization, precautions with polarizing sunglasses, ophthalmic uses of polarization
When light travelling in one medium falls on the surface of second medium the following three effect may occur.
1:- A part of incident light is reflected back into the same medium. This is called Reflection of light.
2:- A part of light is passes through the medium.This Is known as Refraction of light.
3:- And remaining part of the light is absorbed by the surface on which the light fall. This is known as Absorption of light.
Lens history and physics.
For comments please contact me on solo.hermelin@gmail.com.
For more presentations visit my website at http://www.solohermelin.com.
This presentation is in the Optics folder.
Light is a transverse, electromagnetic wave that can be seen by humans. The wave nature of light was first illustrated through experiments on diffraction and interference. Like all electromagnetic waves, light can travel through a vacuum. The transverse nature of light can be demonstrated through polarization.
Most of the times this study confused me...so, i just put some important points in one place to easily keep them in mind..hope it will help other students as well..and inform me, if a reader find anything new to improve it further.
In this term paper most of the types of lens aberrations have been discussed and also have discussed about the use of this knowledge. The aberrations covered in this presentation are:-
Monochromatic Aberrations--Spherical Aberration, Coma, Field Curvature, Distortion, Astigmatism. Chromatic Aberrations - Longitudinal Chromatic Aberrations and Transverse Chromatic Aberrations.
Polarization and it's application in OphthalmologyRaju Kaiti
Polarization, types of polarization, mechanisms to produce polarization, Applications of polarization, precautions with polarizing sunglasses, ophthalmic uses of polarization
When light travelling in one medium falls on the surface of second medium the following three effect may occur.
1:- A part of incident light is reflected back into the same medium. This is called Reflection of light.
2:- A part of light is passes through the medium.This Is known as Refraction of light.
3:- And remaining part of the light is absorbed by the surface on which the light fall. This is known as Absorption of light.
Lens history and physics.
For comments please contact me on solo.hermelin@gmail.com.
For more presentations visit my website at http://www.solohermelin.com.
This presentation is in the Optics folder.
Light is a transverse, electromagnetic wave that can be seen by humans. The wave nature of light was first illustrated through experiments on diffraction and interference. Like all electromagnetic waves, light can travel through a vacuum. The transverse nature of light can be demonstrated through polarization.
Presentation for DTI Arts and Crafts Festival about kaleidoscope photography. After the presentation, I taught the participants how to make kaleidoscopes :D
This is a PowerPoint presentation I put together for my Final Teaching Practice.
It covers the whole symmetry topic : identifying lines of symmetry, reflecting in symmetry line and rotational symmetry.
Not all slides are original - some of the slides were adapted from PowerPoints found on TES Resources however the amalgamation and several slides are original.
I hope it will be useful :)
The branch of optics that addresses the limiting case λ0 → 0, is known as Geometrical Optics, since in this approximation the optical laws may be formulated in the language of geometry.
For comments please contact me at solo.hermelin@gmail.com.
For more presentations on different subjects visit my website at http://www.solohermelin.com.
This presentation is in the Optics Folder.
Basics of clinical optics and their application in clinical ophthalmology. Introduction to principles of interaction of light and its travel through different media. The basic principles, objectives and methods of ophthalmic instruments are also explained.
Mirror - Physics by: Rey San Andrew RimandoRey Rimando
In this PowerPoint Presentation, you will find related topics with explanation like the Three Types of Mirror; it's characteristics and functions. Attached also is the video presentation used under the hyperlink(UNDERLINED WORDS). I'm hoping this will help a lot of students. Thanks! -Rey
Reflection of light
Spherical mirrors
Images formation by spherical mirrors
Representation of images formed by spherical mirrors using ray diagrams
Mirror formula and magnification
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Generating a custom Ruby SDK for your web service or Rails API using Smithyg2nightmarescribd
Have you ever wanted a Ruby client API to communicate with your web service? Smithy is a protocol-agnostic language for defining services and SDKs. Smithy Ruby is an implementation of Smithy that generates a Ruby SDK using a Smithy model. In this talk, we will explore Smithy and Smithy Ruby to learn how to generate custom feature-rich SDKs that can communicate with any web service, such as a Rails JSON API.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
8. When light rays go straight into our eyes,
we see an image in the same spot as the object.
object
&
image
9. Mirrors
It is possible to
see images when
converging light
rays reflect off of image
mirrors.
object
10. Reflection
(bouncing light)
Reflection is when light normal
changes direction by
bouncing off a surface.
When light is reflected off a
mirror, it hits the mirror at
the same angle (θi, the reflected incident
incidence angle) as it reflects ray ray
off the mirror (θr, the
reflection angle). θr θi
The normal is an imaginary
line which lies at right angles
to the mirror where the ray
hits it. Mirror
13. How do we see images in mirrors?
object image
Light from the object
reflects off the mirror
and converges to form an image.
14. Sight Lines
object image
We perceive all light rays as if they come straight from an object.
The imaginary light rays that we think we see are called sight lines.
15. Sight Lines
object image
We perceive all light rays as if they come straight from an object.
The imaginary light rays that we think we see are called sight lines.
16. Image Types
object & object image
image
window
mirror
Real images are formed by light rays.
Virtual images are formed by sight lines.
17. Plane (flat) Mirrors
do di
ho hi
object image
Images are virtual (formed by sight lines) and upright
Objects are not magnified: object height (ho) equals image height (hi).
Object distance (do) equals image distance (di).
19. Concave & Convex
(just a part of a sphere)
r
• •
C F
f
C: the center point of the sphere
r: radius of curvature (just the radius of the sphere)
F: the focal point of the mirror or lens (halfway between C and the sphere)
f: the focal distance, f = r/2
20. Concave Mirrors
(caved in)
•
F optical axis
Light rays that come in parallel to the optical axis reflect through the focal point.
22. Concave Mirror
(example)
•
F
optical axis
The first ray comes in parallel to the optical axis and reflects through the focal point.
23. Concave Mirror
(example)
•
F
optical axis
The first ray comes in parallel to the optical axis and reflects through the focal point.
The second ray comes through the focal point and reflects parallel to the optical axis.
24. Concave Mirror
(example)
•
F optical axis
The first ray comes in parallel to the optical axis and reflects through the focal point.
The second ray comes through the focal point and reflects parallel to the optical axis.
A real image forms where the light rays converge.
26. Concave Mirror
(example 2)
•
F
optical axis
The first ray comes in parallel to the optical axis and reflects through the focal point.
27. Concave Mirror
(example 2)
•
F
optical axis
The first ray comes in parallel to the optical axis and reflects through the focal point.
The second ray comes through the focal point and reflects parallel to the optical axis.
28. Concave Mirror
(example 2)
•
F
optical axis
The first ray comes in parallel to the optical axis and reflects through the focal point.
The second ray comes through the focal point and reflects parallel to the optical axis.
The image forms where the rays converge. But they don’t seem to converge.
29. Concave Mirror
(example 2)
•
F
optical axis
The first ray comes in parallel to the optical axis and reflects through the focal point.
The second ray comes through the focal point and reflects parallel to the optical axis.
A virtual image forms where the sight rays converge.
30. Your Turn
(Concave Mirror)
•
object F
optical axis
concave mirror
• Note: mirrors are thin enough that you just draw a line to represent the mirror
• Locate the image of the arrow
31. Your Turn
(Concave Mirror)
•
object F
optical axis
concave mirror
• Note: the mirrors and lenses we use are thin enough that you can just draw a line to
represent the mirror or lens
• Locate the image of the arrow
32. Convex Mirrors
(curved out)
•
F
optical axis
Light rays that come in parallel to the optical axis reflect from the focal point.
The focal point is considered virtual since sight lines, not light rays, go through it.
34. Convex Mirror
(example)
•
F
optical axis
The first ray comes in parallel to the optical axis and reflects through the focal point.
35. Convex Mirror
(example)
•
F
optical axis
The first ray comes in parallel to the optical axis and reflects through the focal point.
The second ray comes through the focal point and reflects parallel to the optical axis.
36. Convex Mirror
(example)
•
F
optical axis
The first ray comes in parallel to the optical axis and reflects through the focal point.
The second ray comes through the focal point and reflects parallel to the optical axis.
The light rays don’t converge, but the sight lines do.
37. Convex Mirror
(example)
•
F
optical axis
The first ray comes in parallel to the optical axis and reflects through the focal point.
The second ray comes through the focal point and reflects parallel to the optical axis.
The light rays don’t converge, but the sight lines do.
A virtual image forms where the sight lines converge.
38. Your Turn
(Convex Mirror)
•
object F
optical axis
convex mirror
• Note: you just draw a line to represent thin mirrors
• Locate the image of the arrow
39. Your Turn
(Convex Mirror)
•
object image F
optical axis
convex mirror
• Note: you just draw a line to represent thin mirrors
• Locate the image of the arrow
40. Lens & Mirror Equation
1 1 1
f di do
ƒ = focal length
do = object distance
di = image distance
f is negative for diverging mirrors and lenses
di is negative when the image is behind the lens or mirror
41. Magnification Equation
hi di
m
ho do
m = magnification
hi = image height
ho = object height
If height is negative the image is upside down
if the magnification is negative
the image is inverted (upside down)
42. Refraction
(bending light)
Refraction is when light bends as it passes normal
from one medium into another.
θi
air
When light traveling through air passes
into the glass block it is refracted towards
glass
the normal.
block
θr
When light passes back out of the glass θi
into the air, it is refracted away from the
normal.
Since light refracts when it changes θr air
mediums it can be aimed. Lenses are
shaped so light is aimed at a focal point. normal
43. Lenses
The first telescope, designed and built by Galileo, used lenses to focus light from faraway
objects, into Galileo’s eye. His telescope consisted of a concave lens and a convex lens.
light from convex lens concave
far away lens
object
Light rays are always refracted (bent) towards the thickest part of the lens.
44. Concave Lenses
Concave lenses are thin in the middle and make light
rays diverge (spread out).
•
F
optical axis
If the rays of light are traced back (dotted sight lines), they
all intersect at the focal point (F) behind the lens.
45. Concave Lenses
•
F
optical axis
The light that come the same way if we ignore diverge from the focal point.
Light raysrays behavein parallel to the optical axisthe thickness of the lens.
46. Concave Lenses
•
F
optical axis
Light rays that come in parallel to the optical axis still diverge from the focal point.
47. Concave Lens
(example)
•
F
optical axis
The first ray comes in parallel to the optical axis and refracts from the focal point.
48. Concave Lens
(example)
•
F
optical axis
The first ray comes in parallel to the optical axis and refracts from the focal point.
The second ray goes straight through the center of the lens.
49. Concave Lens
(example)
•
F
optical axis
The first ray comes in parallel to the optical axis and refracts from the focal point.
The second ray goes straight through the center of the lens.
The light rays don’t converge, but the sight lines do.
50. Concave Lens
(example)
•
F
optical axis
The first ray comes in parallel to the optical axis and refracts from the focal point.
The second ray goes straight through the center of the lens.
The light rays don’t converge, but the sight lines do.
A virtual image forms where the sight lines converge.
51. Your Turn
(Concave Lens)
•
object F
optical axis
concave lens
• Note: lenses are thin enough that you just draw a line to represent the lens.
• Locate the image of the arrow.
52. Your Turn
(Concave Lens)
•
object image
F
optical axis
concave lens
• Note: lenses are thin enough that you just draw a line to represent the lens.
• Locate the image of the arrow.
53. Convex Lenses
Convex lenses are thicker in the middle and focus light rays to a focal point in front of the
lens.
The focal length of the lens is the distance between the center of the lens and the point
where the light rays are focused.
55. Convex Lenses
•
F
optical axis
Light rays that come in parallel to the optical axis converge at the focal point.
56. Convex Lens
(example)
•
F
optical axis
The first ray comes in parallel to the optical axis and refracts through the focal point.
57. Convex Lens
(example)
•
F
optical axis
The first ray comes in parallel to the optical axis and refracts through the focal point.
The second ray goes straight through the center of the lens.
58. Convex Lens
(example)
•
F
optical axis
The first ray comes in parallel to the optical axis and refracts through the focal point.
The second ray goes straight through the center of the lens.
The light rays don’t converge, but the sight lines do.
59. Convex Lens
(example)
•
F
optical axis
The first ray comes in parallel to the optical axis and refracts through the focal point.
The second ray goes straight through the center of the lens.
The light rays don’t converge, but the sight lines do.
A virtual image forms where the sight lines converge.
60. Your Turn
(Convex Lens)
optical axis
•
object F
convex lens
• Note: lenses are thin enough that you just draw a line to represent the lens.
• Locate the image of the arrow.
61. Your Turn
(Convex Lens)
optical axis
image
•
object F
convex lens
• Note: lenses are thin enough that you just draw a line to represent the lens.
• Locate the image of the arrow.
62. Thanks/Further Info
• Faulkes Telescope Project: Light & Optics by Sarah Roberts
• Fundamentals of Optics: An Introduction for Beginners by
Jenny Reinhard
• PHET Geometric Optics (Flash Simulator)
• Thin Lens & Mirror (Java Simulator) by Fu-Kwun Hwang