Summary of Formula Mandatory Experiment: To verify Law and use it to measure the refractive index of a solid. Snell’s Leaving Cert Physics Syllabus: Refraction Content Depth of Treatment Activities STS 1. Laws of Refractive index Demonstration using ray box Practical examples, e.g. real and refraction laser other suitable apparent depth of fish in water. or or method. Refractive index in terms of Appropriate calculations. relative speeds. Appropriate calculations. 2. Total internal Critical angle Demonstration. Reflective road signs. reflection Relationship between critical Appropriate calculations Mirages. angle and refractive index. Prism reflectors. Transmission of light Uses of optical fibres: through optical fibres. telecommunications medicine (endoscopes) Experiments: Verification of law of refraction. Snell’s Measurement of the refractive index of a liquid a solid. or VERIFICATION OF OF REFRACTION SNELL’S LAW Or TO MEASURE THE REFRACTIVE INDEX OF A GLASS BLOCK APPARATUS: Glass block, ray-box, protractor, page DIAGRAM one which included the ray-box) (I couldn’t find PROCEDURE Place a glass block on the page and mark its outline. Shine a ray of light from the ray-box into the glass block. Mark two dots on the incident ray and exit ray and draw the outline of the block. Remove the block and complete all lines including the normal, as indicated on the diagram.
Summary of Formula Mandatory Experiment: To verify Snell’s Law and use it to measure the refractive index of a solid. Leaving Cert Physics Syllabus: Refraction Content Depth of Treatment Activities STS 1. Laws of refraction Refractive index Refractive index in terms of relative speeds. Demonstration using ray box or laser or other suitable method. Appropriate calculations. Appropriate calculations. Practical examples, e.g. real and apparent depth of fish in water. 2. Total internal reflection Critical angle Relationship between critical angle and refractive index. Transmission of light through optical fibres. Demonstration. Appropriate calculations Reflective road signs. Mirages. Prism reflectors. Uses of optical fibres: telecommunications medicine (endoscopes) Experiments: Verification of Snell’s law of refraction. Measurement of the refractive index of a liquid or a solid. VERIFICATION OF SNELL’S LAW OF REFRACTION Or TO MEASURE THE REFRACTIVE INDEX OF A GLASS BLOCK APPARATUS: Glass block, ray-box, protractor, page DIAGRAM (I couldn’t find one which included the ray-box) PROCEDURE Place a glass block on the page and mark its outline. Shine a ray of light from the ray-box into the glass block. Mark two dots on the incident ray and exit ray and draw the outline of the block. Remove the block and complete all lines including the normal, as indicated on the diagram.