Statements (17)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
eye
|
| gptkbp:alternativeTo |
gptkb:Ramsden_eyepiece
|
| gptkbp:commonIn |
early optical instruments
|
| gptkbp:consistsOf |
two plano-convex lenses
|
| gptkbp:corrects |
chromatic aberration
|
| https://www.w3.org/2000/01/rdf-schema#label |
Huygens eyepiece
|
| gptkbp:introducedIn |
17th century
|
| gptkbp:inventedBy |
gptkb:Christiaan_Huygens
|
| gptkbp:lensArrangement |
field lens and eye lens
|
| gptkbp:lensSeparation |
equal to half the sum of their focal lengths
|
| gptkbp:namedAfter |
gptkb:Christiaan_Huygens
|
| gptkbp:notRecommendedFor |
high-precision measurements
|
| gptkbp:usedFor |
low to moderate magnification
|
| gptkbp:usedIn |
gptkb:electron_microscope
astronomer |
| gptkbp:bfsParent |
gptkb:Christiaan_Huygens
|
| gptkbp:bfsLayer |
5
|