Statements (27)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
lighthouse
gas discharge lamp |
| gptkbp:contains |
gptkb:argon
gptkb:neon sodium |
| gptkbp:emits |
monochromatic light
yellow light |
| gptkbp:has_high |
luminous efficacy
|
| gptkbp:has_poor |
color rendering index
|
| gptkbp:has_typical_color_temperature |
1800 K
|
| https://www.w3.org/2000/01/rdf-schema#label |
Low-pressure sodium lamp
|
| gptkbp:inventedBy |
gptkb:Philips
1930s |
| gptkbp:operates |
low pressure
low temperature |
| gptkbp:phasedOutIn |
2020s
|
| gptkbp:replacedBy |
gptkb:LED
gptkb:high-pressure_sodium_lamp |
| gptkbp:requires |
ballast
|
| gptkbp:symbol |
gptkb:LPS
|
| gptkbp:used_in |
security lighting
tunnel lighting |
| gptkbp:usedFor |
street lighting
outdoor lighting |
| gptkbp:uses |
sodium vapor
|
| gptkbp:bfsParent |
gptkb:Sodium_Vapor_Lamp
|
| gptkbp:bfsLayer |
8
|