Properties (11)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
eyewear
|
| gptkbp:associatedWith |
gptkb:American_Enlightenment
|
| gptkbp:designedFor |
reading
|
| gptkbp:features |
bifocal lenses
|
| gptkbp:firstIntroduced |
1784
|
| https://www.w3.org/2000/01/rdf-schema#label |
Franklin's spectacles
|
| gptkbp:illustratedBy |
18th century
|
| gptkbp:influencedBy |
optical science
|
| gptkbp:inventor |
gptkb:Benjamin_Franklin
|
| gptkbp:madeOf |
glass
|
| gptkbp:vision |
presbyopia
|