Re: "white" LED's vs. incandescent and halogen lights
Autymn D. C.
sci.optics)
On Dec 11, 8:57 pm, Ron Peterson <r...@shell.core.com> wrote:
> On Dec 11, 7:31 pm, thirty-six <thirty-...@live.co.uk> wrote:
> > I've already sorted that. In conditions were road lighting could be
> > better and I need projection on the road, by current blue tint LED
> > mixes well with the available yellow sodium. Under better road
> > lighting then the blueness is more noticeable to other road users.
> > With no road lighting, the level of illumination is relatively poor
> > and is best supplemented with an incandescent of normal 2-3W levels.
> > it would be nice to see specifically what defects are and are not
> > shown up by the LED without risking riding unlit roads.at speed.
>
> The rods of the eye are most sensitive to blue light.
Wrong, blue (450 nm) is still dim no matter the hull--makes sense when
it's the retina's (redeye's) peak absorption a'owing to damp harmful
overblue liht, not to see any. We can see loor (indigo to you, 420
nm) even better with our shortwave hull, and is proof blue is not a
firstly huered, and RGB anset is bunk. All ye need to do is look at a
OD (optical disc)'s spectrum of sunliht to see it's RGL.
Anyhow, our rods are most afeel to blea-wert liht (498 nm for
scotopsin-11-cis-retinal hrodopsin), or shore- (where shore is 491 nm,
blea 470 nm--peak for bovine retinal eýmelanin, wert 501 nm--in other
words emerald or sky+leaves). It would help if ye and scientists
learn English first: http://google.com/groups?q=Einglish+Dohiwtsch.
But I warn thas the peak or median afeeldom and the mest or mean
afeeldom don't match when their plots are always skewed toward blues.
So blueshift all peaks to find their mest band, and blea-wert yields
blea--bingo, it's the sky, not the sea.
-Aut
Autymn D. C.
On Dec 14, 4:23 am, "Autymn D. C." <lysde...@sbcglobal.net> wrote:
> On Dec 12, 12:11 pm, Tim McNamara <tim...@bitstream.net> wrote:
>
> > In article
> > <829bdc28-9a18-4173-ad3a-72574d550...@j19g2000yqk.googlegroups.com>,
> > Ron Peterson <r...@shell.core.com> wrote:
> > > The rods of the eye are most sensitive to blue light.
>
> > 507 nm for rods, 555 nm for cones. Blue is 475 nm, green is 500 nm and
> > yellow is 575 nm. Rods are most sensitive to green light.
>
> >http://webvision.med.utah.edu/Facts.html
>
> dissenty? {{cn}}
By the way, my spectrum was calibrate with plots thanks to Sam's laser
FAQ site.
Autymn D. C.
> sci.optics)
oops, I mean sci.chem