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| Zero999:
--- Quote from: james_s on May 15, 2021, 11:58:53 pm --- --- Quote from: Zero999 on May 15, 2021, 11:36:10 am ---Is there anyone here old enough to remember gas street lights? My father is in his mid 70s and remembers seeing someone going round lighting the gas lamps every night, when he was a child. --- End quote --- My friend visited Germany in I think 2010 and took a few pictures of some gas streetlighting that was still in use. I don't know exactly where they were but they resembled cobrahead style luminairs but with a row of gas mantles instead of a lamp in them. --- End quote --- I've read somewhere, there are still a few in London, preserved for posterity's sake, but when my father was a child, gaslighting was still widespread, in Warrington, Northwest England, near Manchester and Liverpool. Back then nasty coal gas, a flammable toxic mixture of carbon-monoxide, hydrogen and methane was use to light the streets, as well as piped into homes. |
| penfold:
The one complaint I have with the LEDs is that without the diffusers, (living in a particularly hilly city) when driving up-hill they do appear quite dazzling and the more distant ones can be difficult to distinguish from an oncoming headlamp at first glance especially when there's a reflection from a window. |
| PlainName:
--- Quote --- when driving up-hill they do appear quite dazzling --- End quote --- When our lane was converted, I found myself squinting when between posts because of the dazzle. Now I don't notice, not sure why. I think I am generally in favour of the white LEDs, but one thing I miss from the HPS is that you knew it was night time! Sounds daft, but then a big thing is made about monitors and phones dropping the blue at night (I disable all that stuff). Perhaps that's a hangover from years of sodium and incandescent interior lights - I notice that my preferred colour temperature for LED lighting has crept up since most of out fittings have been changed. |
| Rick Law:
--- Quote from: RichC on May 16, 2021, 12:59:56 pm --- --- Quote from: Rick Law on May 14, 2021, 08:31:04 pm ---The most common color blindness is red-green (8% of male, 0.5% female for Northern European descent according to Wikipedia), next to that is blue-yellow. Yellow, orange, amber are colors are a mix of red and green, so it is unfriendly to decreased sensitivity to red-green. The traffic light colors are even less friendly to them, yet red-green insensitivity appears to be the most common. It may not make any difference to most of us, but I guess only until someone runs over your dog because the street is lid with yellowish lamps. --- End quote --- Sodium lamps are not a mix of red and green, they are a pure yellow (sodium lights have probably the narrowest frequency band of any lights in fact). Also as mentioned colour blindness is about being unable to tell colours apart not being unable to see them at all. --- End quote --- I understand that color blindness is merely unable to distinct the colors. None the less, it does mean a degraded vision. When you have two cars or of similar color, it is hard to make it out as two in low light. Not being able to distinct 1/3 of the color, it may that distinction even harder. It would be like: "That car split itself into two and one went straight and the other one hit me..." |
| penfold:
--- Quote from: dunkemhigh on May 16, 2021, 07:13:46 pm ---Now I don't notice, not sure why. --- End quote --- You know what? I was thinking the exact same thing to myself. The first thought was that it was never a particular "problem" just a noticeable difference I just got used to or gradually adjusted my eye movement to avoid them and changed how I scan a road a when turning into a junction, I'm happy to believe its a perception issue rather than technical. Driving in fog was a very noticeable difference especially where the orange made a useful contrast from the white or red of a car. |
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