The nothing is the same size, there’s just less of it as the universe expands into the space that wasn’t there
I'm still not having it – if there is nothing for the universe to expand into, how can it expand into it?
If I stood on a mouse would that make a 14 stone mouse?
It would make a 14 stone mousse.
Because the nothing is also expanding…into a larger nothing. Which is also expanding.
It’s nothings all the way up.
On anaesthesia, and beyond into psychology
Sedative type drugs like ketamine, to use to pull someone's dislocated shoulder or fractured hip back into line.
They don't have any painkilling effect per se, it still hurts like **** and you'll scream the place down. But then have no memory of it, and if you can't remember it then there's no harm done. The memory of something terrible is worse than the event itself.
By the same token then - executing people by humane methods, vs horrific endings. It'll be unpleasant while it happens but after you'll have no recollection, so what's the problem (ignoring supposed deterrent effect on viewers, etc.)
I’m still not having it – if there is nothing for the universe to expand into, how can it expand into it?
You said it yourself:
... if there is nothing for the universe to expand into
There is nothing for the universe to expand into. If there wasn't nothing there'd be a problem. HTH
Consciousness Yeah that’s mad, a load of electrical signals passed through watery protein and ….... Erection….
FTFY
Isn't the universe expanding only because the kit running the simulation has been upgraded with an even bigger SSD so it's just filling the empty space with old file copies and junk?
On anaesthesia, and beyond into psychology
'They' have discovered that phantom limb pain can be markedly reduced with mirrors. Apparently placing a mirror strategically so that it appears (for instance) that you have a leg - where there isn't one, can help
I note with interest that you 'boffins' claim to understand the infinity or otherwise of the universe, but still haven't explained the induction hob.
If there wasn’t nothing there’d be a problem.
If there isn't nothing, then there is something. So what is it? (The answer isn't allowed to be 'nothing').
perchypanther
Free Member
Because the nothing is also expanding…into a larger nothing. Which is also expanding.
If the nothing is infinite, it can't expand though?
If the nothing is infinite, it can’t expand though?
The individual nothings are finite and constantly expanding. There are just an infinite number of them.
Sedative type drugs like ketamine, to use to pull someone’s dislocated shoulder or fractured hip back into line.
They don’t have any painkilling effect per se
Going to disagree with you there. While ketamine's main effect at higher doses is to cause dissociative anaesthesia, at low dose it's a potent analgesic.
rastherbeintobago is correct and it would be extremely poor practice to leave a patient screaming in pain while manipulation is done
Going to disagree with you there. While ketamine’s main effect at higher doses is to cause dissociative anaesthesia, at low dose it’s a potent analgesic.
And I'm a bit smarter now than i was 15 mins ago......
ernielynch
Full Member
Ah, the light-hearted thread has taken an unpleasant turn.
His comment couldn't go unchallenged. It's not on.
It's not my wish for this genuinely interesting thread to go off topic though.😁
I have just started a degree course in Physics so I can study quantum mechanics - I find it fascinating as it's so counter intuitive as we experience a Newtonian universe on a day to day basis.
I already have a degree in Material Science and we covered quite a lot of physics but it was 35 years ago and I was mainly drunk
I’m still amazed that superglue in a bottle doesn’t dry up, but you put a drop of it out of a bottle and it sets in seconds.
Wait until sir tries some cyanoacetate accelerator on it.
I think (therefore I am, as we're doing psychology) it's catalyzed by water? So in the dry tube it's fine, and it can seem like it's taking forever to stick two things together.
Then as soon as you touch it the moisture your skin immediately sets it and you're bollocksed.
ernielynch
Full Member
It wasn’t in reference to your comment poops, it was in reference to the other now deleted posts.
To be honest I was apologising (poorly) for biting and therefore detailing the thread far more. I should have made that clear but I'll admit, he made my blood boil a smidge.
Sorry Ernie and op!👍😁
IHNFull
I note with interest that you ‘boffins’ claim to understand the infinity or otherwise of the universe, but still haven’t explained the induction hob.
Induction hobs, like time, are a flat circle
What did I miss? Deleted posts on this silly thread? Wasnae me honest 🙂
@WorldClassAccident this is my favourite opening paragraph...
"Ludwig Boltzman, who spent much of his life studying statistical mechanics, died in 1906, by his own hand. Paul Ehrenfest, carrying on the work, died similarly in 1933. Now it is our turn to study statistical mechanics. Perhaps it will be wise to approach the subject cautiously. (Opening lines of "States of Matter", by D.L. Goodstein)."
Any sufficiently advanced technology is indistinguishable from magic
©Sir Arthur C Clark
Why an incline treadmill is harder work than a flat one, you are not actually running up a hill.
Kate Bush was… 🤷🏼
Keep it up, folks, I’m getting some real laughs out of this thread!
Oh, and by the way; Bumblebees - magic can be the only explanation for how something so fat with such tiny little wings actually fly?
joshvegasFree Member
Before it got nicked on Saturday (£30k plus) my work surveying kit was magical the gps unit accurate to 15mm to OS grid (bit too big for fitting to bars) they say science but nah it’s proper magic first survey kit was premagic but worked in the rain!
Hmm that feels wrong. The OS grid is a flawed planar representation of a the surface of a sphere? Surely its 15mm accuracy to any point on the globe?
2types of magic going on , 1st is GPS to 10m then magic 2 down to 15-20mm magic 2 is some sort of base station radio link so is limited to UK at that accuracy. It was magic though 🙁
That you get out of a shower wetter than when you get out of a bath.
That you’re never fully in contact with anything you touch.
That all of Earth’s systems/cycles are finely in perfect balance to allow life.
I have just started a degree course in Physics so I can study quantum mechanics – I find it fascinating as it’s so counter intuitive as we experience a Newtonian universe on a day to day basis.
@olddog, not sure where you are but this Friday
https://www.npl.co.uk/open-day
Quantum mechanics, classical physics and engineering, and people pissing about with LN2 too.
CountZeroO
h, and by the way; Bumblebees – magic can be the only explanation for how something so fat with such tiny little wings actually fly?
Lovely little creatures, always bring a smile to my face as they, well, just bumble past.😁
They like a bit of football too.
It doesn’t make the boats any lighter.
Except, it does. You’ve got things which are much denser/heavier than water (steel) and things which are much less dense/heavy than water (air). Add them together and you’ll float or sink depending on whether you’re at a net gain or not.
These are concrete, so how do these work, then? 😝
I’m still amazed that superglue in a bottle doesn’t dry up
I'm not because I saw someone explaining how it sets. A lot of things don't set because they dry out, they undergo a chemical reaction which makes them solid - concrete, for example. The cement dissolves in the water then a chemical reaction happens to make a solid. If you let the water dry out before this reaction occurs it stays soft and crumbly. Cyanoacrylate needs water molecules to cause a chain reaction that polymerises it - that's why it sets so quickly and especially on your skin. That's why if you want to keep it fresh in the bottle or tube, squeeze all the air out - or get one of the squeezy sided bottles, as they do that.
Re boats, it's the entire volume of the boat below the surface that is the same weight as the equivalent volume of water. So it's the metal AND the air inside it that counts. If you push down on it, more of it is below the surface so it displaces more water than its volume - so when you let go it bobs back up to the point where the volume and weight are the same.
Think about it this way - when you put a boat in the sea, the sea level rises a little bit as your boat goes down - like a see-saw.
I find it fascinating as it’s so counter intuitive as we experience a Newtonian universe on a day to day basis
When I studied it there was no intuition involved. This is the equation, this is what it says about the relationship between those values. Intuition is based on your lived experiences of the macroscopic world, the quantum world is something else entirely. It's nothing to do with what you consider 'the world' to be.
I know it's probably quite a well known meme now, but this still blows my tiny mind a bit.
It deosn't mttaer in waht oredr the ltteers in a wrod are, the olny iprmoetnt tihng is taht the frist and lsat ltteer be at the rghit pclae. The rset can be a toatl mses and you can sitll raed it wouthit porbelm. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe
Don’t think of it as the universe expanding, think of it as the amount of nothing getting smaller
I’m writing this down, it might come in handy someday!
still haven’t explained the induction hob.
Magnets. When in doubt, it's always magnets, aliens or DNS.
And I’m a bit smarter now than i was 15 mins ago……
No you're not. You're more knowledgeable, your smartness hasn't changed.
These are concrete, so how do these work, then?
But your photos suggest that they don't work.
Whose smart-arsed idea was it to build concrete boats?
On the boats thing, take a glass bowl and float it in a sink of water. Now melt it into a big marble and try and float in the sink again.
Seismic exploration - voodoo and etch-a-sketch mixed up. I used to tow several km of hydrophones* and the echoes were fainter than the noise of the waves. Add them all together and out pops some squiggles. Geologist gets the colouring pencils out and next thing half a billion dollars of oil rig has a gyser of black gold shooting out the top. And it was less than £1 a litre when I learnt to drive!
*Don't get me started on piezoelectricity
Resin 3D printers.
Boy1 has one. He models anitem in CAD software, transfers it to a machine that uses UV absorbing resin, fires UV light at it and a small 3D copy of the thing he created on his computer pops out.
I kind of understand it’s all about UV light, exposure time and intensity, movement and speed of the build plate. But it’s still witchcraft.
Time? Why does it fly when you’re having fun?
the acceleration of a piston from top dead center…….is accelerating at 15,000 ms^-2,
The acceleration is the easy bit, it's making sure they decelerate at TDC that's important 😉 Have watched a 4.2 litre V8 fail to decelerate a number of pistons... at 8000 rpm/full load.
And FWIW, the forces are high enough that the flex/clearances in the conrod/gudgeon pin/crank/block/frame of the engine are large enough to make a measurable difference in the peak loads. Even though the flex/clearances are minuscule.
That you get out of a shower wetter than when you get out of a bath.
Ooooooooooooh, i know this one!
The surface tension of the water in the bath is stronger than the adhesion of the water to your body.
So the bath sucks the liquid off. Don't get that effect in a shower.
(May not apply to those of us who are very hairy.)
And Rolls Royce Aerospace used to send their apprentices on a sailing trip as part of their training.
On a concrete sailing boat.
That sound of the orchestra – that IS just a series of vibrations, so that’s what’s on the record.
Yes I get that. But you could grab any fraction of a second of the recording and have dozens and dozens of instruments playing (on any record not just an orchestra) and a tiny series of bumps allows you to differentiate between the cellos, the violins, the tubs, the french horns, the cymbals,
Hair growth.
If you shave your head hair, it will grow then carry on growing and get longer and longer and longer.
If you shave your hair from anywhere else on the body it will grow to a fixed length then stop. No-one has 30cm long pubes (not even Hairy Helen from Stevenage who I was introduced to as a teenager)
How does body hair know when to stop growing?
