Zoom lens

structure of the eye helps to understand the problems that can develop. Following a ray of light, the ray will first pass through the cornea, a convex and transparent lens that protects the eye. This is also where most of the refraction of

How does a Lens Refract Light? Convex Lens: Convex lens is a converging lens and are thicker in the middle. As rays of light passes through the lens, the rays are brought close together (converge) When parallel rays of light passes from an optical less dense medium (air) through a convex lens (glass), the refracted rays converge at one point called the focal point. The distance between the principal focus and the centre of the lens is called the focal length. Concave Lens: Concave lens is a diverging

MTSE 6600 Assignment #1: TEM Components and Alignments Name: Tianhao Wang Components: Vacuum System: #1: What is the difference between a gas transfer and a gas entrapment vacuum pump? Answer: A Gas Transfer Vacuum Pump will move the molecules out of the system so that the vacuum environment is formed. And an Entrapment Vacuum Pump will trap the molecules in some way, and they can’t move freely any longer so that the vacuum environment is formed. #2: What are the two

Erin Allbritton CGA110 Ms. Rodgers 18 March 2015 Are All Photoshop Tutorials Easy? Many people in today’s world have explored the world. People take pictures to show their discovery, but others use different methods to explain what they saw. Back then; paper and pen were used for people to explain their discoveries. But fast forward to today’s society, a lot of people love to use a computer. Computer usage can be used for many things. But now, people all over the world (Ex: Students) use programs

through the glass lens and the different colours that make up white light refract at different angles. This causes the observer to see a rainbow around the image they are viewing. One way to counteract the effects of chromatic aberration is to use multiple compensating lenses. Another way to avoid chromatic aberration is to use a long object focal length this is the distance between the focus and the objective Another disadvantage is the difficulty of making the lenses. The objective lens need to have

based on our eyes being approximately 6-7 centimeters apart, which causes each retina to receive a slightly different image. Convergence is a binocular depth cue, involving both eyes concurrently moving inwards as the object moves closer towards the lens, in order to maintain focus on the object. The most simplest Gestalt principle is the gestalt principle, which involves the viewer perceptually grouping and separating features of a stimulus to stand out as an object (the figure) against a plainer

microscope and prepare a wet-mount slide? Hypothesis: A compound microscope is being used properly when the light source, nosepiece lens, and eyepiece lens work together to bring a magnified image to one’s eye. A wet-mount is properly prepared when a drop of liquid containing the sample is placed between the slide and a thin glass coverslip. Materials: Compound Microscope Lens Paper Prepared Slide Scissors Newspaper Microscope Slide Dropper Pipette Coverslip Dissecting Probe Procedure: The microscope

In 2010, Dr. Manu Prakash conducted a presentation for TedMed titled “Print-and-Fold”. Dr. Prakash’s research from Stanford University is based on bringing new technology to global health. In 2012, Dr. Prakash was awarded a grant from the Gates Foundation for his paper-folded microscope project. In addition, Dr. Prakash currently serves as a Bioengineering professor at Stanford University. In this presentation, Dr. Prakash discusses the lack of access that some countries have for microscopes. Thus

microscopy. To calculate a 3D- surface-model the lower and upper border of the depth of interest has to be determined, by focusing on these levels. Between these borders a level difference of five microns were chosen. In other words, after every scan the lens moves five microns from the sample away.

An heirloom from the saddlebag of a horse jiggled loose and fell to stony path—its fall broken by a dollop of manure. Soamy picked it out and looked through. Grey. Nothing came into focus no matter how far or near she held it to objects or the ants that scurried around her boot soles. “Broken,” she said, tossed the looking glass into the long grass and smeared the dirt from her fingers onto her hessian apron. She went on her way—died 52 years later without ever realising her opportunity. In that