Examining the Refraction of Light in Prisms Questions 1. What is the relationship between the angle of incidence and the angle of refraction? The angle of incidence (formed by the ray of light travelling though air into a slab of rectangular perspex) is not directly proportional to the angle of refraction (angle formed between the ray travelling though perspex and the normal). The graph of the plotted angles of incidence against the angles of refraction is not a straight line and therefore demonstrates
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Aim To determine the critical angle of glass using a glass block Principle and Hypothesis The Snell’s Law of Refraction says that – At the boundary between any two given materials the ratio of the sine of the angle of incidence and the angle of refraction is constant for any particular wavelength. The refractive index is determined by the formula – R = Sin i Sin r Where i = angle of incidence of the ray of light r = angle of refraction of the ray of light The
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Phenomena A. Total Internal Reflection 1. When light tries to enter a less optically dense material‚ the light might refract 90o or more. a) This will bend the light between the two media or back into the original material. 2. The refraction of light of 90o (between the two media) is caused by a special angle of incidence –the critical angle 3. The bending of light back into the original medium (refraction > 90o) is known as total internal refraction B. Conditions for Total Internal Reflection 1.
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NT -1310 Unit 7 Assignments MAX HANEY 11/3/2014 Physical Networking Unit 7 Assignments Exercise 1 – Fiber Optics Definitions 1. Crosstalk – The coupling or transfer of unwanted signals from one pair within a cable to another pair. 2. Waveguides – A structure that guides electromagnetic waves along their length. The core fiber in an optical-fiber cable is an optical waveguide. 3. FTTH – Fiber-to-the-home 4. Simplex – a. A link that can only carry a signal in one direction. b. A fiber-optic cable
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Grade 10 Science Exam Study Note Chemistry – Pg1‚ Biology – Pg11‚ Optics/Light – Pg 20 Chemistry Physical and chemical properties and changes • Physical Properties: Something you can see or observe with your senses o State o Colour o Size o Luster/Shinyness o Smell o Melting/Boiling Points o Solubility o Viscosity o Density • Chemical Properties: Characteristics used in a chemical reaction o Tendency to React o Combustibility o Tendency to Rust • Physical Changes o Easily reversible
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1 Chapter 1 Reflection of Light Reflection of Light Practice 1.1 (p. 5) 1 C 2 C 3 Luminous objects: candle flame‚ lighted (c) lamps and the sun Non-luminous objects: books‚ blackboards and the moon (Or other reasonable answers) 4 (a) Divergent (b) Divergent (c) 5 5 Parallel Angle of incidence = 90 25 = 65 Angle between the incident ray and the (a) reflected ray = 65 + 65 = 130 6 (a) Angle of incidence = 90 30 = 60 (b) (b) (c) Angle of reflection for the final reflected
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undergone by a light ray or energy wave in passing obliquely from one medium (as air) into another (as glass) in which its velocity is different Medium- a substance regarded as the means of transmission of a force or effect Total Internal Reflection- the complete reflection of a light ray at the boundary of two media‚ when the
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this first interface angle of incident at this second interface angle of refraction at the second interface and angle between the incident and emerging rays. 1=n2sin 2. Hint: Use Snell’s law n1sin Solution: a) n1sin 1=n2sin 2. 60 4 b) total angle inside a rectangular = 360˚ 60˚+60˚+ (90˚+41.4˚)+(90˚+ 3)=3 60˚ c) 1.46sin18.6 = 1sin d) 5= 4 75 (75˚2)+( 43) 3 2 QUESTION 2: a) A glass fiber (n=1.50) is submerged in water (n = 1.33). what is the critical angle for light to stay inside
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through the slit. B. Law of reflection Angle of incidence is the angle formed by a ray incident on a surface and a perpendicular to the surface at the point of incidence. Angle of reflection is the angle between the reflected ray and the normal ray. The bean was seen and reflected from 10~40 degrees by 10 degrees interval from left and right. In this case‚ the plane of incidence is made by the incidence ray and reflection ray. The reflected ray is in
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from the laser did not bend when the bottom of the prism was perpendicular to the light source. However‚ the light did bend when we started turning the prism in 10⁰ increments. This is when I noticed a source of error. At times the exact degree of reflection was hard to read for two reasons. First‚ the refracted light can be hard to measure
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