Optical Properties of Quasicrystals: Negative Refraction Quasicrystals‚ or crystals that display the unusual property of non-periodicity (while remaining ordered)‚ were discovered in the 1980s by Dan Shechtman. A highly controversial topic‚ Shechtman did not produce a paper describing them for over two years after their discovery. However‚ within the past 30 years‚ the scientific community has come to accept them‚ reproduce them for study‚ and even award Dan Shechtman with a Nobel Prize for their
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faces the source of light. Automobile enthusiasts often call it a fish eye mirror while other physics texts refer to it as a diverging mirror. The term “diverging mirror” is based on this mirror’s behavior of making rays diverge upon reflection. So when you direct a beam of light on a convex mirror‚ the mirror will allow the initially parallel rays that make up the beam to diverge after striking the reflective surface. Since convex mirrors have wider fields of view than other
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Reflection (physics) From Wikipedia‚ the free encyclopedia The reflection of Mount Hood in Mirror Lake. Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Common examples include the reflection of light‚ sound and water waves. The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected
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Refraction: Does light travel faster in water or air? A straight stick appears bent when partially immersed in water; the sun appears oval rather than round when it is about to set; a stream may appear to be much shallower than you know it to be. These are some of the effects caused by the refraction of light as it passes at an angle from one medium to another. Light refraction happens every day in almost every little thing‚ it is an optical illusion. For our science fair project my
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Of course‚ we live in an imperfect world and not all surfaces are smooth. When light strikes a rough surface‚ incoming light rays reflect at all sorts of angles because the surface is uneven. This scattering occurs in many of the objects we encounter every day. The surface of paper is a good example. You can see just how rough it is if you peer at it under a microscope. When light hits paper‚ the waves are reflected in all directions. This is what makes paper so incredibly useful -- you can read
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This reflection is divided into two parts: the importance of critical reflection and an evaluation of self. The first part will be drawing upon through the appropriate literature‚ and there are four points to prove the importance of critical reflection in personal development. It will be expounded and distinguish Reflection in action and Reflection on action. Then‚ the theory of Single and double loop learning will be introduced. Moreover‚ the reflection also includes the difficulties and challenges
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Session 1: A Critical Reflection As I start my new educational path I found myself reflecting back on my most recent work experience. I spent six years working directly in the shadow of a very demanding Office Manager. She received all the credit while I did all the work. Many nights I came home frustrated and in tears from her lack of respect and her threating ways. However‚ my pride in myself and my strong work ethics kept me going in everyday and doing the best job I could do. This past May‚ due
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contribution of reflective practice for clinical nursing. Reflection has been defined as a way for individuals to “capture their experience‚ think about it‚ mull it over and evaluate” (Boud et al 1985: 19) Argyris and Schon (1974) suggest that practitioners often practice at less than effective levels because they follow routine. Johns (1995) implies that action can be taken through reflection to increase effectiveness in practice as reflection provides opportunities for self development as professionals
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What is reflection? Reflection is the examination of personal thoughts and actions. For practitioners this means focusing on how they interact with their colleagues and with the environment to obtain a clearer picture of their own behaviour. It is therefore a process by which practitioners can better understand themselves in order to be able to build on existing strengths and take appropriate future action. And the word ‘action’ is vital. Reflection is not ‘navel-gazing’. Its aim is to develop
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This essay will reflect upon an incident in practice when I administered a drug to a child. I will use Gibbs reflective model (Gibbs 1988)(see appendix 1). This model of reflection will be applied to the essay to facilitate critical thought and relating theory to practice where the model allows. Discussion on the incident will include the knowledge underpinning practice and the evidence base for the administration of the drug. A conclusion to the essay will then be given which will discuss my knowledge
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