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{"id":1044644,"type":0,"block_id":"100004558266640_1367563163","theme_id":31,"user_id":348601,"path":"TIR-and-Optic-fibres","title":"T.I.R and Optic fibres","pubtitle":"T.I.R and Optic fibres","tags":"","public":true,"publicAccess":true,"private_link_enabled":0,"thumb":"https://s3-eu-west-1.amazonaws.com/infogram-thumbs-200/100004558266640_1367563163.jpg","width":550,"copyright":null,"properties":{"exportsettings":"{\"CHART_1642257\":[],\"CHART_1642278\":[]}","transparent":false,"rtl":false,"export_settings":{"showGrid":true,"showValues":true},"whitelabel":false,"embed_button":"enabled","title_link":"infogram","custom_logo":"infogram","custom_link_url":"","embed_button_text":"Share","decimal_separator":".,"},"elements":[{"type":"particle","particle_id":10098082,"object_id":"3a6e565b-e9b0-11e4-a037-7b5f270fdca9","particle_type":"maintitle","picture":null,"text":"T.I.R and Optic fibres","content_type":"","title":null,"shrink":null},{"type":"particle","particle_id":1121894,"object_id":"100004558266640_1367563163","particle_type":"quote","picture":null,"text":"Angle of incidence and the critical angle","content_type":"","title":"--","shrink":null},{"type":"particle","particle_id":1121913,"object_id":"100004558266640_1367563375","particle_type":"image","picture":"http://s3-eu-west-1.amazonaws.com/infogram-particles-700/100004558266640_1367563375.png"},{"type":"particle","particle_id":1121915,"object_id":"1000045582666401367563420","particle_type":"bodytext","picture":null,"text":"As the angle of incidence increases, the angle of refraction increases until it gets to 90 degrees. At this point, the angle of incidence is called the critical angle. Angle bigger than the critical angle reflects back into the block. This is called T.I.R. Critical angle of glass is about 42 degrees.","content_type":"","title":"","shrink":null},{"type":"particle","particle_id":1121971,"object_id":"1000045582666401367563899","particle_type":"maintitle","picture":null,"text":"Optical fibres","content_type":"","title":"","shrink":null},{"type":"particle","particle_id":1121993,"object_id":"1000045582666401367564144","particle_type":"bodytext","picture":null,"text":"Optical fibre is made of very high-quality glass. Very little light is absorbed by the glass. Light gets in at one end and then repeats for T.I.R, even when the fibre is bent, and emerges light at the other end. ","content_type":"","title":"","shrink":null},{"type":"particle","particle_id":1121991,"object_id":"100004558266640_1367564127","particle_type":"image","picture":"http://s3-eu-west-1.amazonaws.com/infogram-particles-700/100004558266640_1367564127.gif"},{"type":"chart","chart_id":1642257,"object_id":"100004558266640_1367565212","chart_type_nr":23,"data":[[["Carries information","coded in light or infrared signals ","circlePath",""],["Carries more information","than ordinary cable with the same diameter","upPath"]]],"custom":{},"colors":[],"dimensions":[],"modifier":0,"sheetnames":[],"sheets_settings":[]},{"type":"particle","particle_id":1122175,"object_id":"1000045582666401367565869","particle_type":"bodytitle","picture":null,"text":"Uses of Optical Fibres","content_type":"","title":"","shrink":null},{"type":"chart","chart_id":1642278,"object_id":"100004558266640_1367565368","chart_type_nr":11,"data":[[["Uses","%"],["Computer data","0.2"],["telephone calls","0.2"],["endoscope","0.2"],["sensor","0.2"],["christmas lighting","0.2"],["telecommunication","0.2"]]],"custom":{},"colors":[],"dimensions":[],"modifier":0,"sheetnames":[],"sheets_settings":[]},{"type":"particle","particle_id":1122178,"object_id":"1000045582666401367565902","particle_type":"bodytitle","picture":null,"text":"Medicine","content_type":"","title":"","shrink":null},{"type":"particle","particle_id":1122182,"object_id":"100004558266640_1367565923","particle_type":"image","picture":"http://s3-eu-west-1.amazonaws.com/infogram-particles-700/100004558266640_1367565923.jpg"},{"type":"particle","particle_id":1122189,"object_id":"1000045582666401367565962","particle_type":"bodytext","picture":null,"text":"Optical fibres allow doctors to see inside patients without surgery. Optical fibres transmit image from inside the body to a visible image. This works by allowing the fibres to project enough light in inside the body.","content_type":"","title":"","shrink":null},{"type":"particle","particle_id":1122195,"object_id":"1000045582666401367566019","particle_type":"bodytitle","picture":null,"text":"Communication","content_type":"","title":"","shrink":null},{"type":"particle","particle_id":1122207,"object_id":"100004558266640_1367566160","particle_type":"image","picture":"http://s3-eu-west-1.amazonaws.com/infogram-particles-700/100004558266640_1367566160.jpg"},{"type":"particle","particle_id":1122138,"object_id":"1000045582666401367565587","particle_type":"bodytext","picture":null,"text":"These can be carried through cables, or transmitted as microwaves or radio waves. However, the information can also be converted into either visible light signals or infrared signals, and transmitted by optical fibres.","content_type":"","title":"","shrink":null},{"type":"particle","particle_id":1122211,"object_id":"1000045582666401367566212","particle_type":"maintitle","picture":null,"text":"Anh thu nguyen","content_type":"","title":"","shrink":null}],"theme":{"createdAt":"2016-04-22T04:54:07.000Z","updatedAt":"2016-12-28T10:33:43.000Z","logoImages":[""],"charts":{"treemap":{"labels":{"name":{"fontFamily":"PT Sans Narrow","fontWeight":"700"},"value":{"fontFamily":"PT Sans 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