<story><title>Diffractive Chocolate</title><url>https://wp.optics.arizona.edu/oscoutreach/diffractive-chocolate/</url></story><parent_chain></parent_chain><comment><author>ma2t</author><text>One of the things I appreciate about HN is that discussions often acknowledges the pioneers. Way back in the early 1990s Eric Begleiter started Dimensional Foods to commercialize edible holographic technology. He gave a memorable demo at Thinking Machines Corp. where, in addition to rainbows from diffraction sheet molded foods, he showed some simple rendered 3D scenes floating in chocolate illuminated by a slide projector. Very impressive at the time when he broke off a chunk and ate it. The short-term idea was to give a rainbow sheen to breakfast cereals, but I think longer term there was talk of using holograms to distinguish and layer information on medicines. Made quite an impression at the time.&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;web.archive.org&amp;#x2F;web&amp;#x2F;20150527050715&amp;#x2F;https:&amp;#x2F;&amp;#x2F;www.nytimes.com&amp;#x2F;1997&amp;#x2F;04&amp;#x2F;02&amp;#x2F;garden&amp;#x2F;where-no-candy-has-gone-before-light-as-the-secret-ingredient.html&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;web.archive.org&amp;#x2F;web&amp;#x2F;20150527050715&amp;#x2F;https:&amp;#x2F;&amp;#x2F;www.nytim...&lt;/a&gt;</text></comment>
<story><title>Diffractive Chocolate</title><url>https://wp.optics.arizona.edu/oscoutreach/diffractive-chocolate/</url></story><parent_chain></parent_chain><comment><author>zifk</author><text>&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;www.youtube.com&amp;#x2F;watch?v=UsDnkrDvkBo&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;www.youtube.com&amp;#x2F;watch?v=UsDnkrDvkBo&lt;/a&gt;&lt;p&gt;Ben from Applied Science has a good video going over the same topic.</text></comment>