{"id":572,"date":"2020-07-04T04:27:57","date_gmt":"2020-07-04T04:27:57","guid":{"rendered":"https:\/\/live-optics-wp.pantheonsite.io\/oscoutreach\/?p=572"},"modified":"2026-03-23T08:28:17","modified_gmt":"2026-03-23T15:28:17","slug":"refraction","status":"publish","type":"post","link":"https:\/\/wp.optics.arizona.edu\/oscoutreach\/refraction\/","title":{"rendered":"Refraction"},"content":{"rendered":"\r\n<p><strong>Overview<\/strong>: Refraction is the bending or change in direction of light as it passes from one transparent medium to another (e.g., air to water or glass). This phenomenon occurs because light travels at different velocities in different materials.<\/p>\r\n\r\n\r\n\r\n<p>\u200b\u200b<strong>Supplies<\/strong>: Choose from the following:<\/p>\r\n<ul>\r\n<li>Laser and lens kit<\/li>\r\n<li>Spear fishing<\/li>\r\n<li>Fish tank with laser light<\/li>\r\n<li>Water beads<\/li>\r\n<li>Prism with flashlight<\/li>\r\n<li><a href=\"https:\/\/wp.optics.arizona.edu\/oscoutreach\/total-internal-reflection\/\">TIR demos<\/a><\/li>\r\n<li><a href=\"https:\/\/wp.optics.arizona.edu\/oscoutreach\/rainbows\/\">Rainbow demo<\/a><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p><strong>Objectives<\/strong>: How does light bend through different substances? How many ways do we see refraction in our everyday lives?<\/p>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<p><strong>Laser and Lens Kit Setup:<\/strong><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Lay out the angle marked circle<\/li>\r\n<li>Plug in the laser source and choosing 1, 3, or 5 lasers.<\/li>\r\n<li>Place the laser source at the edge of the circle<\/li>\r\n<li>Choose a lens and place it in front of the laser source<\/li>\r\n\r\n\r\n<\/ul>\r\n\r\n\r\n\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-2189\" src=\"http:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/laser-kit-1-300x226.jpg\" alt=\"\" width=\"300\" height=\"226\" srcset=\"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/laser-kit-1-300x226.jpg 300w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/laser-kit-1-1024x771.jpg 1024w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/laser-kit-1-768x578.jpg 768w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/laser-kit-1-1536x1157.jpg 1536w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/laser-kit-1-2048x1542.jpg 2048w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-2194\" src=\"http:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/laser-kit-2-3-300x161.jpg\" alt=\"\" width=\"348\" height=\"187\" srcset=\"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/laser-kit-2-3-300x161.jpg 300w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/laser-kit-2-3-1024x548.jpg 1024w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/laser-kit-2-3-768x411.jpg 768w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/laser-kit-2-3-1536x823.jpg 1536w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/laser-kit-2-3-2048x1097.jpg 2048w\" sizes=\"auto, (max-width: 348px) 100vw, 348px\" \/><\/p>\r\n<p><strong>How to run the demo:<\/strong><\/p>\r\n<p>Explain how different shaped lenses will refract, or bend the light in different ways.<\/p>\r\n<p><strong>Spear Fishing Setup:<\/strong><\/p>\r\n<p>\r\n\r\n<\/p>\r\n<ul class=\"wp-block-list\">\r\n<li>Fill the large fish tank with water<\/li>\r\n<li>Place the goldfish (filled with rocks) on the bottom of the fish tank at one end, but not quite up against the wall, with its tail facing the wall<\/li>\r\n<li>Hand the participant the &#8220;fishing spear&#8221; stick<\/li>\r\n\r\n\r\n<\/ul>\r\n<p>\r\n\r\n<\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-2196 aligncenter\" src=\"http:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/spear-fishing-300x226.jpg\" alt=\"\" width=\"366\" height=\"276\" srcset=\"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/spear-fishing-300x226.jpg 300w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/spear-fishing-1024x771.jpg 1024w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/spear-fishing-768x578.jpg 768w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/spear-fishing-1536x1157.jpg 1536w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/spear-fishing-2048x1542.jpg 2048w\" sizes=\"auto, (max-width: 366px) 100vw, 366px\" \/><\/p>\r\n<p><strong>How to run the demo:<\/strong><\/p>\r\n\r\n\r\n\r\n<p>The participants must hold the spear above the water. They have to choose an angle they think will spear the fish in the head. They should not change their angle once the spear enters the water.<\/p>\r\n<p><strong>Fish Tank with Laser Light Setup:<\/strong><\/p>\r\n<p>\r\n\r\n<\/p>\r\n<ul class=\"wp-block-list\">\r\n<li>Fill the small fish tank with water<\/li>\r\n<li>Place a drop of creamer in the tank (you can always add more, you can&#8217;t take away!) and stir it into the water. This is to better see scatter<\/li>\r\n<li>Use a green laser pointer<\/li>\r\n\r\n\r\n<\/ul>\r\n<p>\r\n\r\n<\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-635 aligncenter\" src=\"http:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/1565D1DE-0485-4CC1-B983-D92BEEB11760_1_105_c-300x225.jpeg\" alt=\"\" width=\"348\" height=\"261\" srcset=\"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/1565D1DE-0485-4CC1-B983-D92BEEB11760_1_105_c-300x225.jpeg 300w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/1565D1DE-0485-4CC1-B983-D92BEEB11760_1_105_c-768x576.jpeg 768w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/1565D1DE-0485-4CC1-B983-D92BEEB11760_1_105_c.jpeg 1024w\" sizes=\"auto, (max-width: 348px) 100vw, 348px\" \/><\/p>\r\n<p><strong>How to run the demo:<\/strong><\/p>\r\n<p>Shine the laser into the water from various sides of the tank (including the water surface) and angles. Show how TIR can be achieved once you hit the critical angle.<\/p>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<p><strong>What&#8217;s Happening?<\/strong><\/p>\r\n\r\n\r\n\r\n<p><span id=\"t-0-0-0-0-g-152-refraction\" class=\"underline decoration-dotted underline-offset-[3.3px] hover:decoration-solid cursor-pointer\">Refraction<\/span> is the bending of light (also of sound, water and other waves) as it passes from one <span id=\"t-0-0-2-99-g-1363-transparent\" class=\"underline decoration-dotted underline-offset-[3.3px] hover:decoration-solid cursor-pointer\">transparent<\/span> substance into another. When the light travels at an angle from a substance to one with a different refractive index (optical <span id=\"t-0-0-1-107-g-45-density\" class=\"underline decoration-dotted underline-offset-[3.3px] hover:decoration-solid cursor-pointer\">density<\/span>) the different density causes the light to change speeds, and therefore change directions and refract. For example, light traveling from air to water will slow down when it hits the water because the index of refraction (density) of water is greater than air. This can be seen in the example below, assuming n<sub>1<\/sub> is air and n<sub>2<\/sub>\u00a0is water. The exact angle of refraction can be calculated using Snell&#8217;s Law.<\/p>\r\n<p><strong class=\"Yjhzub\" data-sfc-root=\"c\" data-sfc-cb=\"\"><span class=\"mTEjhd\" data-sfc-root=\"c\" data-sfc-cb=\"\"><!--TgQPHd|[[[null,&quot;\\u003cspan data-xpm-copy-root data-xpm-latex\\u003d\\&quot;n_1 \\\\sin\\\\theta_1 \\u003d n_2 \\\\sin\\\\theta_2\\&quot; style\\u003d\\&quot;display: inline\\&quot;\\u003e\\u003cdiv style\\u003d\\&quot;position: relative; direction: ltr;display: inline-block;\\&quot;\\u003e\\u003cimg aria-hidden\\u003d\\&quot;true\\&quot; data-xpm-latex\\u003d\\&quot;n_1 \\&quot; draggable\\u003d\\&quot;false\\&quot; role\\u003d\\&quot;presentation\\&quot; src\\u003d\\&quot;data:image\/gif;base64,R0lGODlhAQABAIAAAP\/\/\/wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw\\u003d\\u003d\\&quot; style\\u003d\\&quot;pointer-events: none; position: absolute; height: 100%; width: 100%; left: 0; top: 0;\\&quot;\\u003e\\u003csvg xmlns\\u003d\\&quot;http:\/\/www.w3.org\/2000\/svg\\&quot; aria-hidden\\u003d\\&quot;true\\&quot; direction\\u003d\\&quot;ltr\\&quot; width\\u003d\\&quot;0.975em\\&quot; height\\u003d\\&quot;0.717em\\&quot; viewBox\\u003d\\&quot;0 -0.467 0.975 0.717\\&quot; style\\u003d\\&quot;vertical-align: -0.25em; overflow: visible; user-select: none;\\&quot;\\u003e\\u003ctext fill\\u003d\\&quot;#0A0A0A\\&quot; style\\u003d\\&quot;font-family: XITSMath-Regular; font-size: 1px\\&quot; transform\\u003d\\&quot;translate(0,0)\\&quot;\\u003e\ud835\udc8f\\u003c\/text\\u003e\\u003ctext fill\\u003d\\&quot;#0A0A0A\\&quot; style\\u003d\\&quot;font-family: XITSMath-Regular; font-size: 0.75px\\&quot; transform\\u003d\\&quot;translate(0.559,0.25)\\&quot;\\u003e\ud835\udfcf\\u003c\/text\\u003e\\u003c\/svg\\u003e\\u003c\/div\\u003e\\u003cdiv style\\u003d\\&quot;position: relative; direction: ltr;display: inline-block;\\&quot;\\u003e\\u003cimg aria-hidden\\u003d\\&quot;true\\&quot; data-xpm-latex\\u003d\\&quot;\\\\sin\\&quot; draggable\\u003d\\&quot;false\\&quot; role\\u003d\\&quot;presentation\\&quot; src\\u003d\\&quot;data:image\/gif;base64,R0lGODlhAQABAIAAAP\/\/\/wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw\\u003d\\u003d\\&quot; 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style\\u003d\\&quot;font-family: XITSMath-Regular; font-size: 1px\\&quot; transform\\u003d\\&quot;translate(0.389,0)\\&quot;\\u003ei\\u003c\/text\\u003e\\u003ctext fill\\u003d\\&quot;#0A0A0A\\&quot; style\\u003d\\&quot;font-family: XITSMath-Regular; font-size: 1px\\&quot; transform\\u003d\\&quot;translate(0.667,0)\\&quot;\\u003en\\u003c\/text\\u003e\\u003c\/svg\\u003e\\u003c\/div\\u003e\\u003cdiv style\\u003d\\&quot;position: relative; direction: ltr;display: inline-block;\\&quot;\\u003e\\u003cimg aria-hidden\\u003d\\&quot;true\\&quot; data-xpm-latex\\u003d\\&quot;\\\\theta_2\\&quot; draggable\\u003d\\&quot;false\\&quot; role\\u003d\\&quot;presentation\\&quot; src\\u003d\\&quot;data:image\/gif;base64,R0lGODlhAQABAIAAAP\/\/\/wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw\\u003d\\u003d\\&quot; style\\u003d\\&quot;pointer-events: none; position: absolute; height: 100%; width: 100%; left: 0; top: 0;\\&quot;\\u003e\\u003csvg xmlns\\u003d\\&quot;http:\/\/www.w3.org\/2000\/svg\\&quot; aria-hidden\\u003d\\&quot;true\\&quot; direction\\u003d\\&quot;ltr\\&quot; width\\u003d\\&quot;0.982em\\&quot; height\\u003d\\&quot;0.935em\\&quot; viewBox\\u003d\\&quot;0 -0.685 0.982 0.935\\&quot; style\\u003d\\&quot;vertical-align: -0.25em; overflow: visible; user-select: none;\\&quot;\\u003e\\u003ctext fill\\u003d\\&quot;#0A0A0A\\&quot; style\\u003d\\&quot;font-family: XITSMath-Regular; font-size: 1px\\&quot; transform\\u003d\\&quot;translate(0,0)\\&quot;\\u003e\ud835\udf3d\\u003c\/text\\u003e\\u003ctext fill\\u003d\\&quot;#0A0A0A\\&quot; style\\u003d\\&quot;font-family: XITSMath-Regular; font-size: 0.75px\\&quot; transform\\u003d\\&quot;translate(0.566,0.25)\\&quot;\\u003e\ud835\udfd0\\u003c\/text\\u003e\\u003c\/svg\\u003e\\u003c\/div\\u003e\\u003c\/span\\u003e&quot;],null,1,0,0,0,0,null,null,0]]--><\/span><!--TgQPHd|[]--><\/strong><\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2166  aligncenter\" src=\"http:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/The-Law-of-Refraction-Snells-Law-1-300x151.png\" alt=\"\" width=\"549\" height=\"276\" srcset=\"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/The-Law-of-Refraction-Snells-Law-1-300x151.png 300w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/The-Law-of-Refraction-Snells-Law-1-420x210.png 420w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/The-Law-of-Refraction-Snells-Law-1.png 750w\" sizes=\"auto, (max-width: 549px) 100vw, 549px\" \/><\/p>\r\n<p>Converging lenses (convex lenses) bend light rays to a focus point.<\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-2170 aligncenter\" src=\"http:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/convex-lens-300x200.jpeg\" alt=\"\" width=\"450\" height=\"300\" srcset=\"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/convex-lens-300x200.jpeg 300w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/convex-lens-1024x683.jpeg 1024w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/convex-lens-768x512.jpeg 768w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/convex-lens-1536x1024.jpeg 1536w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/convex-lens.jpeg 1840w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/p>\r\n<p>Diverging lenses (concave lenses) bend light away from the focus point.<\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-2172 aligncenter\" src=\"http:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/concave-lens-300x200.jpeg\" alt=\"\" width=\"386\" height=\"257\" srcset=\"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/concave-lens-300x200.jpeg 300w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/concave-lens-1024x683.jpeg 1024w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/concave-lens-768x512.jpeg 768w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/concave-lens-1536x1024.jpeg 1536w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/concave-lens.jpeg 1840w\" sizes=\"auto, (max-width: 386px) 100vw, 386px\" \/><\/p>\r\n<p>Prisms separate white light into its color components as Isaac Newton first demonstrated. He also showed that the colors can be recombined to make white light again.<\/p>\r\n<p>The explanation for the colors separating out is that the light is made of waves. Red light has a longer <span id=\"t-0-0-1-106-g-202-wavelength\" class=\"underline decoration-dotted underline-offset-[3.3px] hover:decoration-solid cursor-pointer\">wavelength<\/span>\u00a0than violet light. The refractive index for red light in glass is slightly different than for violet light. Violet light slows down even more than red light, so it is refracted at a slightly greater angle.<\/p>\r\n<div id=\"attachment_2175\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/commons.wikimedia.org\/w\/index.php?curid=27487197\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-2175\" class=\"wp-image-2175 size-medium\" src=\"http:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/Dispersive_prism-1-300x204.png\" alt=\"\" width=\"300\" height=\"204\" srcset=\"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/Dispersive_prism-1-300x204.png 300w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/Dispersive_prism-1-1024x695.png 1024w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/Dispersive_prism-1-768x521.png 768w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/Dispersive_prism-1-1536x1043.png 1536w, https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-content\/uploads\/sites\/75\/2020\/07\/Dispersive_prism-1-2048x1391.png 2048w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-2175\" class=\"wp-caption-text\">Photo by Kelvinsong<\/p><\/div>\r\n<p>Refraction makes it possible for us to have lenses, magnifying glasses, prisms and rainbows. Our eyes even depend upon this bending of light. Without refraction, we wouldn\u2019t be able to <span class=\"explicitly-deglossed-by-editor\">focus\u00a0<\/span>light onto our\u00a0<span id=\"t-2-0-1-15-g-1358-retina\" class=\"underline decoration-dotted underline-offset-[3.3px] hover:decoration-solid cursor-pointer\">retina<\/span>.<\/p>\r\n<p>&nbsp;<\/p>\r\n\r\n\r\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\r\n\r\n\r\n<p><strong>Learn more:<\/strong> (external links)<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\"><a href=\"https:\/\/youtu.be\/O2dwo-_DDbk\">Refraction shows magic of optics<\/a><\/p>\r\n\r\n\r\n\r\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\"><a href=\"https:\/\/youtu.be\/UDAKX-0gTPg\">Refraction and Reflection<\/a><\/p>\r\n\r\n\r\n\r\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\"><a href=\"https:\/\/www.youtube.com\/watch?v=uL5zW6HDsro&amp;list=PL6DwVv2hudGZHkS34wAV-4NQ7Fw3zPTxf&amp;index=26\">Splitting Sunlight<\/a><\/p>\r\n","protected":false},"excerpt":{"rendered":"<p>See the magic of light bending when moving from one medium to another.<\/p>\n","protected":false},"author":43,"featured_media":999,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-572","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-everyday-optics"],"_links":{"self":[{"href":"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-json\/wp\/v2\/posts\/572","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-json\/wp\/v2\/users\/43"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-json\/wp\/v2\/comments?post=572"}],"version-history":[{"count":39,"href":"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-json\/wp\/v2\/posts\/572\/revisions"}],"predecessor-version":[{"id":2200,"href":"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-json\/wp\/v2\/posts\/572\/revisions\/2200"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-json\/wp\/v2\/media\/999"}],"wp:attachment":[{"href":"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-json\/wp\/v2\/media?parent=572"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-json\/wp\/v2\/categories?post=572"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp.optics.arizona.edu\/oscoutreach\/wp-json\/wp\/v2\/tags?post=572"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}