Pressing the crosswalk button over and over will make the light change faster.
this post was submitted on 04 Feb 2025
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I think we know it doesn't help, but we do it anyway.
The buttons are intended to be placebo except in some places.
I'm in one of those places. In Utah, many crosswalk lights won't turn on at all unless you press the button, and the button can completely change the light timing and ordering (e.g. a protected left turn light activates at the end of a cycle instead of at the beginning).
Traffic engineers here are sometimes allowed to do some fairly interesting things.
Same goes for most "close door" buttons in elevators btw. ๐
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Sometimes buttons don't work the first time you press them.
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The harder it is to pull a bow, the faster the arrows.
Isn't that true, all other things being equal?
Depends.
Compound bows are designed such that you put in a LOT of energy where your mechanical advantage is high (at the start of the draw) then less as your mechanical advantage diminishes (at the end of the draw).
This makes the bow very "light" to pull and easy to hold drawn, but the energy with which the arrow will be fired is higher than almost any other design, save some cross-bows.
So, correct me if I'm wrong, but wouldn't that also change the way that the arrow is accelerated by the bow? Like, it starts a little slower, and then has increased acceleration until the string returns the the starting position? Whereas a long or recurve bow is going to have the hardest acceleration at the very start, since that's where the most energy is stored?
And if that's true, how does that affect the flight of the arrow? I know that with stick bows, the arrow bows as it's being accelerated, and then wobbles slightly before stabilizing a few feet in front of the bow. Some of that is likely because the arrow has to bend around the bow stave. But do you see less of that with a compound bow?
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In a traditional long bow yes. In a modern compound bow, not necessarily.
If everything is equal, the arrow gets out of tune. If you tune the arrow it becomes heavier.
"Bigger is better"
we need more working powers to keep our wealth and our standard of living up. obviously, as things are crumbling around us, this means we don't put in enough effort to maintain things, and more hands would help.
that is a false thought. The labor market is regulated by supply and demand. That means, fewer workers lead to higher wages and a higher quality of life. It might seem paradoxical, but having a smaller workforce means people in the country will be able to afford more stuff.
That is especially important as people discuss the birth-rate, and immigration, in all countries, also in the US and in Europe. People say things such as "women have 1.6 children on average, which means our population is declining, and obviously that is the reason why our quality-of-life seems to be going down as well". However, the opposite is true. As automation takes over and well-paying (and meaningful) jobs are eroded, having fewer people around doing all the work actually drives wages up, and leads to an improved quality-of-life.
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the sky is blue
an unbiased perspective
More abstract concepts that generally trouble the intuition of many:
the irrelevance of laminar to turbulent flow
time and gravity are related
magnetism is not magic
entropy precludes perpetual motion
The sky isn't blue in many cultures. It's been shown that words for blue only occur in a language after that culture has discovered a blue dye. And that limitation in available words also constrains how you see and think about the world.
This is covered in Guy Deutscher's book The Unfolding of Language, which is an excellent read.
I was going with Rayleigh scattering, but that works too
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A bird in the hand is worth two in the bush?
That means you ahould take the immesiate payoff or be happy with what you have instead of spensing a bunch of time trying to get more.
it also means don't risk everything you have for a somewhat opaque promise of something better
Hehe ok I'll wear those down votes. I didn't understand the reference as I heard it first on The Two Ronnies as 'a bird in the hand is worth two in the shepherd's bush' which I think think might be a carry-on reference.
I didn't see why l would want a bird in my hand in the first place.
PS - what happened to your D key?
I switched keyboards on android, new one doesn't have autocorrect or swipe, but it doesn't connect to the internet. I don't always proofread posts.