Why do circuit breakers go up for on and down for off?

If you ever go to B&Q, do not purchase their more expensive colour matched paint. You give them a piece of fabric/whatever, the computer scans it, and it "mixes" the right paint to match it. Except it's a lie. It just picks one of about 300 colours from a list. Which you can do by holding the fabric up against the chart on the wall and save money.

Having at least one between each makes sense. If your eye detects R and G about equally, there should be a name for that.

I call bullshit. If the lowest frequency detector was yellow, how do we see red? And why does the RGB system on TVs work so well?

I wonder why women tend to be more colour fussy? Are they being fussy or accurate?

It's nowhere near "many".

Females sometimes have 4.

On my bicycle, I overtook a van coming down the North Downs once. I glanced in at the drivers dash as I dis so. His speedo registered 38mph or thereabouts.

Ah, Youth...

Herb sounds affected to me. OTOH, I pronounce the H in herbivore, herbicide, etc. "A foolish consistency is the hobgoblin of little minds."

Given the implicit "Y" sound at the beginning, it's a virtual consonant. "AEIOU and sometimes Y".

Maybe you only know 12 people.

(a) The frequencies represent the peaks of the curves. You will see from the diagram that both of the yellow sensitive cones have tails that extend well into the red. We see red by comparing the relative levels of the two. People with only one type of yellow cone can't do this, which is why they can't tell red from green.

(b) I suspect that any three well separated colours would work. Maybe RGB was chosen as phosphors and dyes for those colours are available, or maybe because "famous scientist" Maxwell said that we see red, blue and green.

My other post links to the Wiki article on colour blindness. It's about 8%

Showoffs.

Oddly red+green light produced yellow. At least it seems odd to me, but I can't get into others' heads. Yellow looks completely different from red and green to me, whereas red+blue produces magenta which looks like a mixture of red and blue. Blue+green produces cyan, which is more like a light blue to me, but maybe if it is darker it would look teal, which is blue-green.

It's odd that colour circle (wheel) diagrams look right, and violet looks like an intermediate between red and blue. Is this a perceptual matter, or is it that extreme red is twice the wavelength of extreme blue, in which case it's physical? If so, why should this be the case as our eyes are just adapted to the range of light mostly produced by our Sun?

Billionaires row in New York (W57th st) wasn't built by socialists.

However, in order to build them the developers had to build some 'affordable' blocks in the Bronx.

The annual property taxes for the latter are about $4K per year, while for the $100 million apartments in the Mega towers get away with paying about $150 per *year* because of a loophole in the way they are assessed for property taxes.

Over half are empty (or owned by Chinese billionaires to hide assets).

We do have an internet. You could look it up.

Or maybe he doesn't test all the people he knows.

Some cultures, especially asians, like bright primary colors. That could well be genetic.

There are clearly differences in male/female color vision. There are other diffrences, which is nice.

The first DTL and TTL parts were nand and jk flops. Before that, we had RTL which was mostly nor. Both were horrible, slow and expensive and unreliable.

The old non-electronic car voltage regulators, in the DC generator days, used a vibrating reed to adjust the field current. That was a PWM buck converter: apply the voltage to the load some of the time.

They are willing to utter the bullshit names marketers come up with to describe colors. All I know about teal is they're tasty if you manage to shoot one.

Other than the NORPAK debacle it was all TTL and eventually CMOS before I moved more toward the software side as microcontrollers came into play. It was a profitable combination for embedded systems.

I rather miss ucontrollers so I play around with them on the side. Right now I'm looking at tinyML. It's disappointing that you need megaML to distill down the inference set to run on a tiny chip.

herbal? I often hear the h dropped there too, possibly as an extension of erb. Like you say anyone who wants consistency better learn German.

I prefer to use the names assigned by Crayola.

I can't believe you lived through the 1980s without knowing more about the color teal. The entire decade was colored teal and mauve.

Yes, "erbal". Isn't that how it's pronounced in the commercials?