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Optics Essay Topics & Paper Examples

Diffraction and Interference

Purpose: The aim of doing this experiment was to examine diffraction and interference effects of light passing through various apertures, and use the diffraction patterns obtained by single and double slit apertures to find the wavelength of the light source used. Theory: We know that light can be described by two theories, namely the particle theory and the wave theory of light, each having its own experimental proofs. In this experiment, we examine the interference and diffraction phenomena of light, both of which can be described by the wave theory of light. While interference is just the superposition of waves, diffraction is also any deviation from geometrical optics that results from the obstruction of a wavefront of light. In other…

Microscopy and the Metric System

1. List the components of the compound microscope and their function. 2. determine the total magnification given that you are using a compound microscope with the following objectives: 4x, 10x, 40x, and 100x 3. what is meant by the depth of field? 4. what is meant by the field of view? 5. describe the process of making a wet mount. ________________________________________________________________________________ 1. -Focal adjustment; used to adjust height of stand to adjust closer too or farther from slide. -eyepiece; used to look into to see what is on the slide closer -arm; hold when carrying, also used to -objective lenses; must use smallest objective lens, they have different levels of magnification -stand; used to hold up the microscope. -light source;…

Optical Training Manual

An Occupational Lens (or Enhanced Reader) is a reading lens that has a Degression zone to incorporate the Intermediate prescription (and sometimes, depending on prescription, a good DV portion) Why dispense an Occupational Lens, instead of a Reading pair of glasses? With more and more people using Computers, Laptops and Smartphones, we demand more from the Intermediate zone than ever before. So by dispensing a pair of Reading glasses to a (Pre)Presbyope we are predominantly only taking care of one aspect of the cx’s working or home life day. Therefore, with the introduction of the Occupational Lens, we can ensure the cx is able to see both the NV and INT zone without compromise. Who to Dispense an Occupational Lens…

Free Space Optics

ABSTRACT: FSO may sound new and experimental but in fact it predates optical fiber and has its roots in wartime efforts to develop secure communication systems that did not require cable and could withstand radio jamming. FSO has been around for more than a decade, but it is only recently that interest in this technology has started to grow. Free Space Optics (FSO) communications, also called Free Space Photonics (FSP) or Optical Wireless, refers to the transmission of modulated visible or infrared (IR) beams through the atmosphere to obtain optical communications. Like fiber, Free Space Optics (FSO) uses lasers to transmit data, but instead of enclosing the data stream in a glass fiber, it is transmitted through the air. Free…

Photodiode Process

* a type of photodetector capable of converting light into either current or voltage, depending upon the mode of operation. The common traditional solar cell used to generate electric solar power is a large area photodiode. * a semiconductor with a p-n junction PRINCIPLES OF PHOTODIODE * Photons is the source of its energy * Energy can be solved by the equation: W=hf Where: h =Planck’s constant= 6.624×10-34 f = frequency * The frequency is, in turn, directly related to the wavelength (distance between successive peaks) of the traveling wave by the following equation: = Vf = wavelength f = frequency V = velocity of light * 1 lm=1.496×10-10 W * Light intensity is measured in lmft2, footcandle (fc), or…

Balloon Cars

Repulsorlifts as a Method of Stable Magnetic Levitation| Repulsorlifts were used in the study to find out if they can be used to replace the wheels of a conventional car. It was hypothesized that it will be able to lift a car using magnetic repulsion forces. The different magnets were tested individually with the usual tests for magnetic strength, size, and temperature increase, which were done in the preliminary testing. The prototype road and car were then constructed based on the specifications that had been identified after the preliminary testing. The prototype car’s magnets were permanent magnets while the road magnets were electromagnets. They had been oriented so that the magnets would repel each other.After the levitation tests, the proponents…

The Human Eye and the Colourful World

Q 1. What is meant by power of accommodation of the eye? Ans. The ability of the eye lens to adjust its focal length, so as to clearly focus rays coming from distant as well a near objects on the retina, is called the power of accommodation of the eye. Q2. A person with a myopic eye cannot see objects beyond 1.2 m distinctly. What should be the type of the corrective lens used to restore proper vision? Ans. A person with a myopic eye should use a concave lens of focal length 1.2 m so as to restore proper vision. Q 3. What is the far point and near point of the human eye with normal vision? Ans. For…

Refractive Indices of Water And Turpentine Oil

To find Refractive Indices of Water And Turpentine Oil using a plane mirror, a equiconvex lens (made from a glass of known refractive index) and an adjustable object needle APPARATUS: A convex lens, an optical needle, a plane mirror, a clamp stand, a spherometer, a plumb line, metre scale, water and turpentine oil Theroy : Let’s add small amount of water on a flat, plane surface and place a convex lens over it. This forms a plano-concave lens of water between the lower surface of convex lens and plane mirror. Let f 1 and f 2 are the focal lengths of water lens and convex lens respectively, then focal length of the combination is: The focal length of the plano-concave…

Report on Sir Isaac Newton

Sir Isaac Newton was an English mathematician and physicist. He was considered one of the greatest scientists in history. Newton was also the culminating figure in the scientific revolution of the 17th century. Newton was best known for his discovery that the force called gravity affects all objects in space and on earth. .Isaac Newton was born on December 25, 1642, in the hamlet of Wollsthorpe, Lincolnshire (R.S.W. 17) His Father died only three months before he was born (Sir Isaac Newton 1). When he was three years old Isaac’s mother, Hanna, placed him with his grandmother so that she could remarry a man named Barnabas Smith, a wealthy man from North Witham (Dr. Robert A. Hatch 1). When his…

The Microscope: Science’s Greatest Invention

The microscope has been one of the greatest inventions in the history of science and has had the most impact on the course of science. Ever since the first microscope was invented in 1590, they have improved our knowledge in basic biology and biomedical research, as well as many other things, all of which are important. The smallest object a human can see with the naked eye is 0.2 mm, for example, algae cells. The light microscope, however, allows us to see things almost 1000 times smaller that what the eye can see, like plant, animal, and bacteria cells, and the electron microscope allows us to see things almost 1,000,000 times smaller, like viruses and proteins. The Italians paved the…

The Most Useful (or Important) Scientific Invention

The microscope is considered one of the most useful and important scientific inventions known to ‘man’. The microscope was invented by Anton van Leeuwenhoek during the seventeenth century. Leeuwenhoek was not a scientist by profession. Initally he made a living selling clothes and buttons, but spent his spare time grinding lenses and constructing microscopes of remarkable quality, such as the light microscope. The light microscope could magnify cells, for instance in plants so you could see a clearer and bigger picture of what they are made of. Over the years, scientists improved on Anton van Leeuwenhoek’s microscope by creating microscopes with higher magnifications and far better resolutions, so specimens examined had a sharper image. The latest improvement was the electron…

Batman Begins Opening Scene

In the opening scene of Batman Begins it shows hundreds of bats flying in the sky. This is to set an ominous tone for the audience and to show a sense of danger. This is also done by the high pitched sound of the bats giving a panicked and fearful tone. The lightening in this scene is very grey and dull, this could foreshadow that the film is going to be quite dark and mysterious as well as representing a sense of evil. This allows the audience to become intrigued and eager to see what the film is about. In the next scene the camera pans rapidly across the garden causing the image to blur. This is done to make…

Deviation of angle of incidence

In optics, a prism is a transparent optical element with flat, polished surfaces that refract light. The exact angles between the surfaces depend on the application. The traditional geometrical shape is that of a triangular prism with a triangular base and rectangular sides, and in colloquial use “prism” usually refers to this type. Some types of optical prism are not in fact in the shape of geometric prisms. Prisms can be made from any material that is transparent to the wavelengths for which they are designed. Typical materials include glass, plastic and fluorite. A prism can be used to break light up into its constituent spectral colors (the colors of the rainbow). Prisms can also be used to reflect light,…