I have heard of a website that sells them, I forget the name of it but I am sure someone will chime in. Also ebay:

https://www.ebay.com/itm/267526760251

As the title says, I'd like to obtain some PowerGroove fluorescent lamps. Question is, how do I go about obtaining some?

I notice that even relatively new LPS lamps have huge black socks around their electrodes. Is this something particular to LPS? Or does it happen equally with fluorescent and we just can't see it behind the phosphor?

Very interesting, I really would never expect this. Hope it goes through

Yes, I currently don't have an antivirus, I just didn't want to explain all that.

It seems like today most people's gut reflex is that the second an OS falls out of support it will be all full of trojans and malware and won't be safe to use anymore. In reality, out of support OSes quickly lose market share and thus become a less-desirable target for hackers. Most programs won't even run on W7 and XP anymore!

https://www.congress.gov/bill/119th-congress/house-bill/4626/text/ih

This act would require stricter oversight on the DOE before they impose new efficiency rules on home appliances - for example, light bulbs.

It would also allow them to repeal old standards, like the rule that banned incans.

It has made it past committee, and is awaiting a vote in the House. Might be worth keeping an eye on.

Isn't the stamp being printed on the lamp using pad printing like this: https://www.youtube.com/watch?v=sdAALcqrZR4

It is possible.  The silicone coating is not pure silicone fluid, it’s often in some kind of solvent which evaporates away.  Perhaps if the etch was not well burned into the glass, the coating coukd dissolve the ink’s own solvent and make it easier to remove.   Years of operation may cause a drying effect that evaporates both solvents, leaving only the harder ink materials.

Trimline lamps were GE’s copy of the earlier Sylvania Octron family of tubes.  So and argon-filled range designed for operation on 265mA ballasts.

Thank’s for that interesting insight of lamp etching James. I find it most annoying on new old stock Philips fluorescent lamps from the 1970s and 80s because these etches tend to be wiped off very easily when the lamp was stored too long. Especially on TL lamps with Silicone coating. Lamps which saw some use tend to have burned in etches which are more robust. Can that be true?