{"id":31879,"date":"2025-07-09T01:03:42","date_gmt":"2025-07-09T05:03:42","guid":{"rendered":"https:\/\/phsc.ca\/camera\/?p=31879"},"modified":"2025-07-07T19:07:18","modified_gmt":"2025-07-07T23:07:18","slug":"a-weird-optical-device","status":"publish","type":"post","link":"https:\/\/phsc.ca\/camera\/a-weird-optical-device\/","title":{"rendered":"a weird optical device"},"content":{"rendered":"
\"\"<\/a>

A Refractometer at a 1998 Show and Tell<\/p><\/div>\n

Toronto<\/strong>. In April of 1998 the society held a ‘Show and Tell’ session at its monthly meeting. The late Ron Anger showed this strange optical device and challenged members to name it.<\/p>\n

That naming did occur, thanks to member Egon Kellner. In a brief article titled “A What Is It? Gets Answered”, \u00a0Egon writes, ” The optical instrument shown by Ron\u00a0Anger at the April meeting of the society\u00a0(Show and Tell) is a refractometer. It is a\u00a0rather unusual piece of equipment for the\u00a0camera collector, but an important item\u00a0found in a medical or biochemistry lab.<\/p>\n

“We all know of the refraction of light by a camera lens, similarly a light beam\u00a0changes direction when it enters a liquid\u00a0medium as displayed by the apparent\u00a0bending of a straight rod on entering water.\u00a0The degree of refraction depends on\u00a0the atomic or molecular nature of the liquid, as well as its concentration and temperature.<\/p>\n

“When a refractive index is determined with an instrument as Ron Anger\u00a0displayed, then it becomes a simple matter\u00a0to compute the concentration of a known\u00a0chemical in a liquid, i.e the protein content\u00a0in serum.<\/p>\n

“Tables that correlate the refractive\u00a0indecies and concentrations of a large number of organic and inorganic\u00a0chemicals were developed in\u00a01898 (to give some historical information!) using\u00a0the instruments manufactured by\u00a0Carl Zeiss Jena.” …\u00a0<\/i><\/p>\n

The source of this name and more about Ron’s instrument can be read in the issue 24-3 \u00a0pdf file on the free members-only DVD\/thumb drive. See Membership above or at right to join. Drop Lilianne a note at member@phsc.ca<\/a> if you have a question.<\/p>\n

You may not see one of these gadgets at the annual trunk sale, but you will have a great time – and the chance to add to your collection. The Trunk Sale<\/a> is this Sunday, July 13th – rain or shine. All our PHSC 2025 events are shown to the right!<\/p>\n","protected":false},"excerpt":{"rendered":"

Toronto. In April of 1998 the society held a ‘Show and Tell’ session at its monthly meeting. The late Ron Anger showed this strange optical device and challenged members to name it. That naming did occur, thanks to member Egon … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1944],"tags":[2017,1734,1731],"class_list":["post-31879","post","type-post","status-publish","format-standard","hentry","category-history","tag-article","tag-collectible","tag-optical"],"_links":{"self":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/31879","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/comments?post=31879"}],"version-history":[{"count":2,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/31879\/revisions"}],"predecessor-version":[{"id":31883,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/posts\/31879\/revisions\/31883"}],"wp:attachment":[{"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/media?parent=31879"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/categories?post=31879"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phsc.ca\/camera\/wp-json\/wp\/v2\/tags?post=31879"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}