bachatero@lemmy.world to Mildly Interesting@lemmy.world · edit-29 months agoThis is what the insides of a high pressure sodium (HPS) light bulb look likelemmy.worldimagemessage-square3fedilinkarrow-up182arrow-down15
arrow-up177arrow-down1imageThis is what the insides of a high pressure sodium (HPS) light bulb look likelemmy.worldbachatero@lemmy.world to Mildly Interesting@lemmy.world · edit-29 months agomessage-square3fedilink
minus-squarelazylion_calinkfedilinkarrow-up2·9 months agoHow much pressure? Is the bulb pressurized or the smaller tube? Is it normal air or something specific like nitrogen?
minus-squareSteveTech@programming.devlinkfedilinkEnglisharrow-up2·9 months agoI searched it up: It seems the smaller tube is pressurised, the larger bulb is under a vacuum. Some of the other diagrams also show a getter in the bulb, so it’s a proper vacuum tube level vacuum.
How much pressure? Is the bulb pressurized or the smaller tube? Is it normal air or something specific like nitrogen?
I searched it up:
It seems the smaller tube is pressurised, the larger bulb is under a vacuum. Some of the other diagrams also show a getter in the bulb, so it’s a proper vacuum tube level vacuum.