checkpointCHECKPOINT WORKSHEET ON LIGHT Q1. It is night-time and the desk lamp is on. Light shines onto the key. (a) (i) Draw one ray of light on the diagram to show the light shining from the lamp onto the key. Use a ruler. Put an arrow on the ray to show the direction of the light. 2 marks (ii) There is a patch of light on the wall. This light has been reflected from the key. Draw a reflected ray of light on the diagram. Use a ruler. 2 marks (b) There is a dark shadow on the table beside the
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Noise Barriers By: Daniel Dick In the studio‚ in any live performance‚ basically anywhere music is being played‚ how the music sounds is the most important thing. Sure‚ the way they artists are dressed might be cool to see‚ and sure‚ the way they strut around stage might grab your attention‚ but the way they sound is definitely the most important component of the performance or recording. Part of the sound that they produce that is so essential to artists is the noise barrier that they use
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Law of Refraction- by Aydar Z. Hypothesis: During investigation‚ student will calculate 2 sets of Angles of Incidence & Refraction. The Hypothesis is that 2 outer angles would have very similar values (1st angle of Incidence and 2nd angle of Refraction)‚ while 2 inner angles will also have similar values (2nd angle of Incidence and 1st angle of Refraction). This Hypothesis is based on earlier test investigations where outer angles were very similar in a range of 3 degrees and inner angles were very
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different ways. An example when it goes through a low density medium to a high density medium the angle of refraction decreases. With all the test done the angles of incident and reflection stayed the same. This is because with light what angle it approaches at is the angle the light will reflect back at. Also the angle of refraction depended on what the angle of incident and refraction were‚refraction is a dependent variable being the reason why the other angles matter. The first test was how light moves
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The Index of Refraction was similar in each given medium and among the three mediums. This is obvious because (for example) in water‚ the indexes are all within 1.3 and for all three of the mediums there is a small range of 1.3-1.5 for the Index of Refraction. A light ray travelling from air to water will refract towards the normal more than a light ray travelling from water to air would. A light ray travelling from air to vegetable oil will refract towards the normal more than a light ray travelling
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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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Spherical Mirrors A spherical mirror is a mirror which has the shape of a piece cut out of a spherical surface. There are two types of spherical mirrors: concave‚ and convex. These are illustrated in Fig. 68. The most commonly occurring examples of concave mirrors are shaving mirrors and makeup mirrors. As is well-known‚ these types of mirrors magnify objects placed close to them. The most commonly occurring examples of convex mirrors are the passenger-side wing mirrors of cars. These type of mirrors
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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 atropine. The remarkable fluctuations in refraction after 50 mg. per kilogram pilocarpine (Fig. 5) were not due topilocarpine (Fig. 5)‚ 0.45 mg. per kilogram of atropine was administered intraperitoneally. Nine minutes after the atropine‚ the myopia had increased and then remained high until a larger dose of atropine‚ 0.8 mg. per kilogram‚ was given. The pupil contracted maximally during the experiment‚ and
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POLARIZATION TOPICS POLARIZATION OF ELECTROMAGNETIC WAVES POLARIZING SHEETS POLARIZATION BY REFLECTION DOUBLE REFRACTION CIRCULAR POLARIZATION POLARIZATION BY SCATTERING Text Book: PHYSICS VOL 2 by Halliday‚ Resnick and Krane (5th Edition) MIT-MANIPAL BE-PHYSICS-POLARIZATION-2011-12 1 POLARIZATION OF ELECTROMAGNETIC WAVES • By convention‚ we define the direction of polarization of the wave to be the direction of the electric vector. • The plane determined by electric
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