Random triples
Subject | Object |
---|---|
gptkb:Huygens_eyepiece | field lens and eye lens |
gptkb:Ramsden_eyepiece | lenses with convex sides facing each other |
Subject | Object |
---|---|
gptkb:Huygens_eyepiece | field lens and eye lens |
gptkb:Ramsden_eyepiece | lenses with convex sides facing each other |