On Sat, 22 Dec 2018 23:33:40 -0000, Rod Speed wrote:



"William Gothberg" "William wrote in message
news
On Sat, 22 Dec 2018 23:01:40 -0000, Rod Speed
wrote:



"William Gothberg" "William wrote in message
news On Sat, 22 Dec 2018 21:18:35 -0000, Rod Speed
wrote:



"William Gothberg" "William wrote in message
news On Sat, 22 Dec 2018 02:55:55 -0000, Rod Speed

wrote:



"William Gothberg" "William wrote in
message
news why does google have 4.5 million results for the car light flicker?

Just a few mindlessly ranting freaks, like you.

I must have asked about 30 people I know about it, and about half
agreed
it was irritating.

The technical term for that is 'pathetically inadequate sample'

I've done statistics at uni,

And clearly the whole lot went right over your head, as always.

I know what an adequate sample is.

You clearly don't with that steaming turd above.

Well I understand this,

No you do not.

How can you possibly know if I don't?

do you?

Corse I do.

Don't believe you.

https://en.wikipedia.org/wiki/Sample...pothesis_tests

To make it easier for you:
https://www.qualtrics.com/blog/calculating-sample-size/

For example, with the world population of 7.5 billion, to be 90% sure you
only have an error margin of 10%, you only need 63 people in your sample.

So yours is clearly a pathetically inadequate sample.

It's half of what's required for the above accuracy. I don't need that much accuracy. Even if I was 20% out, then saying that 50% of people can see flicker means that 40% can. 40% is a big enough part of the population to cater for.

If half could actually see car lights flicker, the
designers wouldn't have designed them like that.

Economy.

Doesn't cost anymore to say double the pulse
rate so that even freaks like you can't see it.

I assume the higher switching speed needs better transistors etc.

In spades with movies in movie theaters. That frame
rate was chosen because most couldn't see that flicker.

Not the same thing.

Corse its still flicker for freaks.

It's less visible.

LED lights on cars are deliberately pulsed to get more effective
brightness (as far as the human eye is concerned, peak brightness is what
enables you to see better) from the same LEDs with less heat. But LEDs go
completely off between pulses.

And so doubling the pulse rate doesn't cost anymore.

Movie theatres (you mean cinemas,

No I do not.

theatres are for plays, they have a stage,

Movie theaters arent for plays and they don't have stages.

you're talking American)

Wrong, as always.

Cinema = big screen and projector.
Theatre = stage with live actors.
Look it up. Only American English confuses the terms.

don't illuminate the screen with LEDs.

Duh. And irrelevant to whether the frame rate was
chosen because most don't see any flicker with it.
Flicker didn't only happen with LEDs, stupid.

They happen more so as they switch on and off instantly.

Why do you think Panasonic made a 100Hz TV?

Because some freaks can see flicker at 50Hz and
are free to pay more for something faster.

Being able to detect something you can't makes them better than you. Perhaps you should ditch your sense of smell, because smelling things you don't like is annoying. Nevermind the advantage of smell....

Why do you think Iiyama made 90Hz monitors?

Because some freaks can see flicker at 50Hz and
are free to pay more for something faster.

High frequency monitors were very popular. And it was proven that low frequency ones cause headaches and eye damage for people using them all day in offices.