I'd say part of this is the intended / official descriptipn isn't actually that. The spoken word existed first, then someone tried to capture that spoken word using a finite list of characters and character combinations that map back to phenomes. The written word isn't phonetically accurate to the letters it is composed of, and the written word is just close approximation of the spoken word itself.
The fun thing about that is if you live in a western nation, you’re almost guaranteed to be on the chopping block for being in the top 10% of earners world wide.
Traditionally, retiring entails leaving the workforce permanently. However, experts found that the very definition of retirement is also changing between generations....
Na, medical care and medicine are better than they’ve ever been. They’ll save you from your heart attack and you’ll spend the next 3 decades paying for heart medication.
It’s impossible to measure precisely enough to know for sure that it is completely flat, or even saddle shaped (both being infinite in size). The generally accepted understanding by cosmologists is that it is infinite. But just due to the nature of measurement and tools we can’t completely rule out a finite universe. However we do know based on the measurements that it is really really… really really really big if it’s not infinite.
So if you take 2 things that started say ~3 billion light years apart (which would be ~1000x a megaparsec), that means every single second the universe has existed those 2 points have gotten 70,000km further apart. And now that they’re further apart, they separate even faster the next second.
For reference:
31.5 million seconds in a year. ( 3.15 x 10^7 )
universe is 13.8 billion years old ( 1.38 x 10^10 )
So we talking about this 70,000km getting added between the 2 points ~4 x 10^17 times.
Then you gotta bring calculus into it to factor in the changing distance over time.
It … adds up. Which is why you’ll see the estimates for the observable universe’s radius being ~46.5 billion light years (93 billion light year diameter), even though the universe had only existed for ~14 billion years.
Oh wow thanks. You learn something new every day! I’m definitely an “armchair physicist”, and still find it hard to think about things in a nonstacically geometric way.
Sounds like the Hubble Constant ain’t so constant :)
xkcd #2942: Fluid Speech ( imgs.xkcd.com )
xkcd #2942: Fluid Speech...
xkcd #2933: Elementary Physics Paths ( imgs.xkcd.com )
https://xkcd.com/2933...
xkcd #2925: Earth Formation Site ( imgs.xkcd.com )
https://xkcd.com/2925/...
Whatcha doin? ( lemmy.world )
"Morbidly Wealthy": The world’s five richest men have more than doubled their fortunes from $405b to $869b since 2020—at a rate of $14m/hr—while nearly five billion people have been made poorer ( sh.itjust.works )
Source: Oxfam
What the hell is this shit? Instead of pushing for the return to traditional pensions, capitalism is celebrating the idea that Millennials and Gen Z may simply never be able to stop working. ( www.cnbc.com )
Traditionally, retiring entails leaving the workforce permanently. However, experts found that the very definition of retirement is also changing between generations....
Does physics ever get vague?
As in, are there some parts of physics that aren’t as clear-cut as they usually are? If so, what are they?