lithophanes
... that porcelain lithophanes are intended to be viewed when lit from behind?
... that porcelain <b id="mwBVk"><a href="./Lithophane" id="mwBVo" rel="mw:WikiLink" title="Lithophane">lithophanes</a></b> <i id="mwBVs">(examples pictured)</i> are intended to be viewed when lit from behind?