Optics Essays

  • Fundus Camera Research Paper

    1811 Words  | 8 Pages

    Fundus Camera Reticle Setup (Mydriatic) An often overlooked and critical step in obtaining sharp images is to set your reticle. The reticle is the adjustable viewfinder crosshairs and is unique to each operator’s eye visual acuity. To adjust, place a white piece of paper in front of the camera (alternatively, you can use the camera lens cap on), raise the illumination light to highest and while looking through the viewfinder, turn the eyepiece clockwise and counter-clockwise until crosshairs are

  • Reflection And Refraction In Media

    1923 Words  | 8 Pages

    Refraction: Refraction occurs when light enters a more or less optically dense medium, which therefore has a different refractive index (measure of the velocity light can travel at in the medium compared to in a vacuum in which it can travel at 2.9 x 108ms-1). This causes the light’s speed to increase or decrease, which results in the rays bending towards or away from the normal, so the position of the image formed is dependent on the refractive indices of the two media. For refraction to occur

  • Dichloromethane Lab Report

    1278 Words  | 6 Pages

    BS1003 – Organic Chemistry Practical 1 Laboratory Report Name: Tristan Chan Yew Kit, U1640436J (T8) Effects of Dichloromethane(DCM) in Extraction of Caffeine from Tea Leaves Purpose To investigate the ability for Dichloromethane(DCM), a moderately polar organic solvent, to extract aqueous caffeine molecules, originating from Tea Leaves suspended in water. Introduction Caffeine, defined chemically as 1,3,7-trimethylxanthine (C8H10N4O2), is an alkaloid that can be found in tea leaves, coffee and many

  • Colorimeter Lab Report

    1015 Words  | 5 Pages

    Colorimetric method –instrument and application Introduction: - Colorimeter is device which is used to measure transmittance and absorbance of light passing through a liquid sample. It is a light sensitive device. Principle: - Colorimeter works on the principle of Beer-Lambert’s Law. Beer-Lambert’s Law states that when visible light from a natural or artificial source falls on a colored homogenous medium contained in a glass container, the color of the medium is the complementary color of the light

  • Reflection: The Refraction Of Light Waves

    969 Words  | 4 Pages

    The Refraction of Light Waves: The bending of light is known as Refraction. When light travels from a optical less dense media such as air into a dense media such as glass,light will refract/bend towards the normal line and the speed and wavelength of the light will decrease. When light travels from a optical dense media into a less optically dense media, light will refract/bend away from the normal as it exits the dense medium.The speed and wavelength of the light will increase. When closely observed

  • Wide Angle Lens Importance

    345 Words  | 2 Pages

    What are the benefits of a wide angle and why choose one? What situations can they use? Begin because I will answer all these questions for you. A wide-angle lens as its name suggests is just a lens that can capture a wider area than a standard zoom lens, and this gives us great advantages when you take these an image of something or a scene that does not can simply not be pressed into a normal image with a standard lens. One of the main advantages of a wide-angle lens is that you can achieve as

  • Unit 3 Biology Lab 3

    677 Words  | 3 Pages

    Biology 15 Lab # 3 Professor Passerini September 23, 2015 Scot Albert Lab #3 Questions 1, 2a, 3, 4, 5, 6a, 7, and 8 Table 3.1 - all columns except the last one. -------------------------------------------------- 1- a-Upside down and backwards b- If you move it right, the image moves left If you move it left, the image moves right c-It seems to become more dim. (At least to my eyes.) -------------------------------------------------- 2a- 400x larger than life --------------------------------------------------

  • Linear Perspective In The Music Lesson

    1246 Words  | 5 Pages

    Linear perspective is an illusion given by two parallel lines to represent depth and perception. The further the two parallel lines are the closer they look. For example, when you are walking down a long hallway, the further you look the closer the parallel lines appear to be. It may even look as though they are touching. In The Music Lesson, linear perspective appears by the edge of the wall (left hand) where the two parallel lines seem closer because of the distance, the floor tiles, the square

  • Racemic Mixture Research Paper

    863 Words  | 4 Pages

    A racemic mixture is a mix of equal numbers of enantiomeric molecules. Each enantiomer rotates plane-polarized light in an equal but opposite direction and is optically inactive because they are mirror images. when an optically active compound is synthesized, the product formed is found to be an optically inactive racemic mixture containing equal amounts of both l and d forms. The process where enantiomers are separated into l and d forms is referred to as “resolution”. the mixture is then said to

  • Theoretical Jaws Case Study

    2431 Words  | 10 Pages

    the jaws is gained only in the anterior of the midline, the use of this technique for the calculation of horizontal dimension of alveolar process is applicable to this area only. [49,52] 2.4.5 Panoramic Radiography: The resolution of and the shape of the panoramic radiographs is less than that of an intraoral film but it provides a broader visualization of the two jaws and the anatomical structures nearby. The panoramic imaging technique is distinct because of the magnification in vertical plane

  • Microscopy: The Four Basic Principles Of A Microscope

    800 Words  | 4 Pages

    1. INTRODUCTION TO MICROSCOPY A microscope is an instrument used to see objects that are very small for the naked eye. The science of examining small objects using such a tool is called microscopy. Microscopic means invisible to the eye except aided by a microscope. 2. HISTORY FIRST Zacharias Jansen (1580–1638) invented a compound light microscope and after that Antony van Leeuwenhoek in 1632–1723 invented a simple (one-lens) microscope that earned a lot of importance worldwide. Robert Hooke in

  • Pieter Claesz Still Life Analysis

    1009 Words  | 5 Pages

    Description Pieter Claesz illustrated an image showing a morbid scene. The obvious focal point here is the gigantic broken skull, which he uses in many works of art, upon the worn paper in a folder of sorts. It appears as some of these papers were ready to be worked on as they appear less dull in color and are outside of the folder. Supporting the idea that they were to be written on is the quill visible on the left of the skull, from the skull’s perspective. Furthermore, a wine glass is seen as

  • Visible Light Lab

    807 Words  | 4 Pages

    Jessica Vandeventer 23 March 2016 Quantitative Spectroscope and Visible Light Purpose/Question- The purpose of the lab is to build a diffraction grating spectroscope, and to view different lights. We also are going to draw the light spectra of the various light sources. Hypothesis– Each light sources will have a different spectral, but there will be some similarities in the different light sources. Data Tables/ Graphs – Analysis Questions- Exercise 1: Building and Calibrating a Spectroscope

  • Marvel Optics Case Study

    1028 Words  | 5 Pages

    Marvel Optics is a top online store in the United States that sells prescription eyeglasses. It is really changing the perspective of people in the country. We believe that the traditional stores are no longer able to cope up with the demands of the modern customers. At Marvel, we understand their needs, and use a number of methods that really change the perspective of the ordinary people. The modern consumer is really looking for value added services and receiving the best worth for their dollar

  • Essay On Optic Nerve Glioma

    626 Words  | 3 Pages

    I was diagnosed with Optic Nerve Glioma. It is a tumor in the brain specifically near the optic chiasm. I have been fighting cancer for almost 18 years of my life. When I had my first chemotherapy, I lost my hair. I was sad because a lot of kids used to bully me. I was ashamed of myself. Not to mention, it

  • Disadvantages Of Keplerian Telescope

    1027 Words  | 5 Pages

    The Keplerian Telescope: image source The Keplerian telescope has two lenses, both the objective and eyepiece lenses are convex (converging). When light parallel to the principal axis passes through the objective lens, the rays refract and converge until they hit the focal point. After they pass the focal point, the rays start to diverge. The rays are then intercepted by the eyepiece lens where the light refracts as it passes through the lens and causes the light rays to become parallel again as

  • Gardner's Multiple Intelligence Theory

    1175 Words  | 5 Pages

    The main idea of this theory is that knowledge should not be seen as a single general ability, but a combination of eight distinct forms of intelligence. Psychologist Howard Gardner at Harvard University in 1983 originally proposed the Multiple Intelligences (MI) theory . He defined eight measures of multiple intelligence: linguistics, logical- mathematics, visual-spatial, interpersonal, intrapersonal, musical, bodily-kinesthetic and naturalist. (Armstrong, 2007; Gardner, 1983). According to MI

  • Essay On The Sound Of Silence

    818 Words  | 4 Pages

    The Sound of Silence is a constructed aluminium, rectangular theatre installation where Alfredo Jaar tells the story of the South African photojournalist Kevin Carter and the controversial photograph he took in Sudan during the famine in 1993, the photograph famously known as "The Vulture and The Girl". Using the isolation of light and a narrative of Carters collected writings, to engage the viewer to focus on to a deeper path of understanding the human response to the intricacies of being an eyewitness

  • John Barry The Great Influenza Rhetorical Analysis

    826 Words  | 4 Pages

    Stephen Hawking declared, “Scientists have become the bearers of the torch of discovery in our quest for knowledge.” Since the beginning of time, humans have been searching constantly for answers and knowledge about the world around them. Scientists have brought it upon themselves to be the discoverers of the human race. John Barry wrote his account during The Great Influenza of 1918 when millions of people were dying and solutions to the sickness were being sought out after by the scientific community

  • Examples Of Dramatic Irony In Romeo And Juliet

    929 Words  | 4 Pages

    Dramatic Irony: A dramatic action/situation where the audience knows the outcome of but the characters does not. Thesis: In William Shakespeare’s Romeo and Juliet, Shakespeare uses Dramatic Irony to enhance suspense within the audience to create anticipation while using irony to add a certain mood. 3C’s Function: In Act II, Scene II, Juliet is on her balcony expressing her feelings and the things she wishes, “O Romeo, Romeo! wherefore art thou Romeo? Deny thy father and refuse thy name! Or