Comments by "John h Palmer" (@johnhpalmer6098) on "PeriscopeFilm" channel.

@teresashinkansen9402 Most of that was due to the use of either daylight or cool white lamps instead of soft or warm white, and even then, it often was of a pinkish or peachish cast, sometimes with a hint of faint green. That is, until the advent of multi-phosphor lamps that the CRI improved to I think the low 90's.
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@rs12official I don't mind LED in the right context, have had CFL, though most were just OK, but did have an early CFL from Lights of America back in the mid 80's and it was a square ballast that screwed into a lamp socket and the lamp itself was replaceable. Sadly, it was a very early electronic ballast, I think a form of preheat if I recall and it didn't last much beyond 2 years as the early electronic ballasts were not quite ready for prime time then. That said, Where incandescent lamps roamed, LED is now a suitable replacement as there was a time I disliked them due to the light output, but they've improved greatly in the past decade or more. Been using them since 2014 or so when both the light output and the price made then a suitable replacement for incandescent bulbs. But for the right application, still linear and circline lamps still rule, especially if preheat, with rapid start being second best. Basically, I'm lighting agnostic.
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@rs12official It may be, but if memory serves, it did the blinky blink when I first turned it on in the morning. I DO recall it had a bit of a residual glow when shut off at night. the same with the circline fixture I put up in the bedroom that was definitely rapid start. Both were bought in the mid 80's. The Lights of America adapter went into a vintage swag lamp I had over my bed. It was great until the ballast went, replacing the lamp failed to fix it so hence the realization that the ballast was toast. I was in my early 20's when I got them. The adapter unit used a T6 lamp (12T6 or similar). The adapter was square, and the lamp mounted to its top.
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@nikolaivasilev7371 Yes, but all of the support technology like evacuating the air via pump didn't exist until the early 1900's if not mistaken. Did a lot of research on this technology several years ago, the discovery of mercury etc all took time to develop once the realization that some materials glowed when exposed to light being the beginning of the development. It would take until 1935 and GE to get the project finished up in time for the 1939 World's Fair. I, too am still fascinated by old tech fluorescent lamps, fortunately, you can still get the old T12 lamps at places like Home Depot still, though T8 and T5 are more plentiful in the US, and yes, both of these "newer" type lamps have been around almost as long as the T12 lamps were. You mostly saw these smaller diameter lamps were for commercial uses, rather than in the home and the advantage is, more light from less tubes with both the T8 and T5, and yes, you can get them to do the preheat start with the right ballast. Currently have one 4Ft fixture in my kitchen, but it's a newer T8, instant start fixture of the generic plastic wrap around lens, essentially a generic basic fixture and would love to find a vintage preheat one for that space.
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@educatedmanholecoverbyrich8890 From some accounts the info you write here is erroneous. Tesla was erroneously credited for the invention of the fluorescent tube, also, electricity as we know it today didn't happen until the late 1880's and into the 1890's. Fluorescent tubes were being developed by 1900, but was not finished up until the 1930's and brought to display in 1939 as we know it today. Now, Neon came earlier and Tesla was working on similar technology, the gas discharge, but some of his work didn't use electrodes at the ends of the tube, and his Tesla coil would excite these tubes, but wirelessly in the early 1890's. Neon would not be commercially available until 1910 or so, the fluorescent tube came much later in the 30's.
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They definitely can, but remember, in the past the phosphors were inferior to what is now available today in fluorescent lamps, and that only happened in the past oh, 30 years or so.
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@rs12official You are right as far as what the phosphates were called, I just could not recall what they were called without looking them up. Didn't know the Circline were only standard halophosphates. Anyway, had a decorative round 2 lamp circline fixture in my bedroom for a time between the mid 80's and the late 90's when we sold the house and left the fixture in it. It had the 8", and the 12" lamps in it. The fixture came with a frosted white plastic lens to cover up the wiring/ballast and lamps and was designed for a finished room. Came in round or square. Sort of wished I had gotten the square version. Oh well.
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