{"id":657,"date":"2015-03-10T14:22:31","date_gmt":"2015-03-10T14:22:31","guid":{"rendered":"http:\/\/paksc.org\/pk\/?p=657"},"modified":"2015-03-10T14:22:31","modified_gmt":"2015-03-10T14:22:31","slug":"1026-homemade-cd-spectroscope","status":"publish","type":"post","link":"https:\/\/paksc.org\/pk\/science-experiments\/physics-experiments\/1026-homemade-cd-spectroscope\/","title":{"rendered":"Homemade Simple CD Spectroscope"},"content":{"rendered":"
\n

Concept: We can make a spectroscope using a CD instead of replica grating.<\/strong><\/p>\n

\u00a0Introduction:<\/h3>\n

CD (Compact Disc) is used as a music media and a kind of computer memory media. When you look at the surface of CD under a fluorescent light or sunlight, you can see something like a rainbow. The reason is that CD has a large number of grooves (pits) on its surface at regular intervals along its radius. Namely, CD is something like a reflecting type grating. So, we can make a spectroscope using a disused CD.<\/p>\n

Materials:<\/h3>\n

(a) A4 size cardboard\u00a0 (b) a disused CD\u00a0\u00a0\u00a0 (c) a black permanent marker (d) a cutter\/scissors\u00a0\u00a0 (e) wood glue\u00a0 (f) sellotape<\/p>\n

Construction:<\/h3>\n
    \n
  1. Draw the figures of parts A, B on the cardboard as shown in Fig.2.<\/li>\n
  2. Cut out the parts A, B and paint the back side of them black using a black permanent marker.3. Make two slits on the parts A and fold it as shown in Fig.2<\/li>\n
  3. to make a solid body as shown in Fig.3 using wood glue.<\/li>\n
  4. Put the CD into the solid bodyand fix it to the tabs of parts A using sellotape as shown in Fig.4.<\/li>\n
  5. Using sellotape, attach the parts B to the tabs of parts A as shown in Fig.4<\/li>\n<\/ol>\n

    \"Homemade<\/p>\n

    \"Homemade<\/p>\n

     <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

    Concept: We can make a spectroscope using a CD instead of replica grating. \u00a0Introduction: CD (Compact Disc) is used as a music media and a kind of computer memory media. When you look at the surface of CD under a fluorescent light or sunlight, you can see something like a rainbow. The reason is that…<\/p>\n","protected":false},"author":9,"featured_media":658,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[23],"tags":[6,8,17],"class_list":["post-657","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-physics-experiments","tag-class-7th-to-8th","tag-make-your-own","tag-science-club-activities"],"yoast_head":"\nHomemade Simple CD Spectroscope -<\/title>\n<meta name=\"description\" content=\"Homemade Simple CD Spectroscope Homemade Simple CD Spectroscope\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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