Concepts or ideas you just can't get your head around?

Concepts or ideas you just can't get your head around?

Author
Discussion

Mark_S1000RR_2010

108 posts

18 months

Tuesday 21st May 2024
quotequote all
Grip. Specifically motorcycle tyres and grip. I simply cannot get my head around how that small contact patch stops you from sliding off as soon as you go round a corner.

I know the science behind it. My brain simply won’t allow me to believe in the theory. Even on a warm, dry road with sticky tyres - my brain can never fully switch off from the notion that the whole thing is bonkers.

BoRED S2upid

20,693 posts

255 months

Tuesday 21st May 2024
quotequote all
lord trumpton said:
cat food and dog food - surely its just the same ste inside the can?
It is and they prefer pizza. We have a rescue dog from Greece he’s there like WTF is this st you are feeding me? Where’s the kebabs and pizza out of the bin?

Sheetmaself

5,899 posts

213 months

Tuesday 21st May 2024
quotequote all
BoRED S2upid said:
The Pyramids of Egypt. Absolutely blow my mind. We couldn’t recreate those with 100 massive cranes and thousands of workers. Yet they did it way back then with ropes and animal power!
For me it isn’t so much a marvel of engineering, more proof of what can be achieved with an unlimited human workforce, no health and safety, and no concern over the welfare.

LunarOne

6,359 posts

152 months

Tuesday 21st May 2024
quotequote all
That people run without needing to have a closing departure gate in front of them or a hungry T-Rex behind them...

SpudLink

7,103 posts

207 months

Tuesday 21st May 2024
quotequote all
Scotter said:
SpudLink said:
The light that's been travelling 13.6 billion years is the limit of the 'observable universe'. Anything further away hasn't reached us yet. But there is possibly infinitely more beyond that distance.
And because the universe is expanding it means the things we are seeing from 13.6 billion years away are now much much further away than they were.
Expanding into what though? I’ve always wondered.
Also with regards to the big bang theory,I’ve always wondered how something was there to start with in order to kick start it all,so surely there has always been something about and therefore there can’t be a beginning of time as my small brain can understand,which means there’s always been an existence of sorts.Always.
I’m off to church…..
The empty space between clusters of galaxies is expanding. So clusters of galaxies are moving further away from other clusters.
There is no ‘edge’ that expands into unfilled space.
As I said, our primate brains have not evolved to deal with it.

Bradgate

3,056 posts

162 months

Tuesday 21st May 2024
quotequote all
Electricity.

Despite having a Physics A level, I never really felt I understood electricity in the way I understood, for example, the laws of thermodynamics or conservation of energy. I just ‘got’ those concepts on a fundamental level, but never felt I really ‘got’ electricity. All these years later, I’m not sure anyone really does understand it. They understand how to generate it, measure it, move it around and make use of it, but don’t really understand it conceptually.

julianm

1,662 posts

216 months

Tuesday 21st May 2024
quotequote all
Once I had a tiny understanding of crystal field theory - now it's completely gone & has been replaced with a weak understanding of when it will be bin day.

LunarOne

6,359 posts

152 months

Tuesday 21st May 2024
quotequote all
Bradgate said:
Electricity.

Despite having a Physics A level, I never really felt I understood electricity in the way I understood, for example, the laws of thermodynamics or conservation of energy. I just ‘got’ those concepts on a fundamental level, but never felt I really ‘got’ electricity. All these years later, I’m not sure anyone really does understand it. They understand how to generate it, measure it, move it around and make use of it, but don’t really understand it conceptually.
I have both physics and electronics A-levels and recently I watched this video that blew my mind. The energy is apparently not transmitted within conductors at all!


Roofless Toothless

6,558 posts

147 months

Tuesday 21st May 2024
quotequote all
Tim330 said:
Roofless Toothless said:
This is the Andromeda Galaxy. On a clear night you can see it with the naked eye.



It contains a trillion stars, and it takes light 150 years to get from one side of it to the other.

I find this hard to comprehend, but still easier to understand than why the wife wants to move house.
I haven't looked it up but think it's comparable in size to the Milky Way so more than 150 light years across.
You are right. I’m even more flabbergasted now.

Randy Winkman

18,944 posts

204 months

Tuesday 21st May 2024
quotequote all
Sheetmaself said:
BoRED S2upid said:
The Pyramids of Egypt. Absolutely blow my mind. We couldn’t recreate those with 100 massive cranes and thousands of workers. Yet they did it way back then with ropes and animal power!
For me it isn’t so much a marvel of engineering, more proof of what can be achieved with an unlimited human workforce, no health and safety, and no concern over the welfare.
I think that sums it up for me. And we did something not dissimilar in the UK as well. Still amazing mind.

For me I've never understood really good cricket batsman and how they can hit a fast paced ball that swings in the air and moves off the pitch.

Abbott

2,787 posts

218 months

Tuesday 21st May 2024
quotequote all
LunarOne said:
Bradgate said:
Electricity.

Despite having a Physics A level, I never really felt I understood electricity in the way I understood, for example, the laws of thermodynamics or conservation of energy. I just ‘got’ those concepts on a fundamental level, but never felt I really ‘got’ electricity. All these years later, I’m not sure anyone really does understand it. They understand how to generate it, measure it, move it around and make use of it, but don’t really understand it conceptually.
I have both physics and electronics A-levels and recently I watched this video that blew my mind. The energy is apparently not transmitted within conductors at all!

I now feel dimmer than I was before watching that

john2443

6,444 posts

226 months

Tuesday 21st May 2024
quotequote all
Randy Winkman said:
For me I've never understood really good cricket batsman and how they can hit a fast paced ball that swings in the air and moves off the pitch.
I heard a radio programme (you might be able to find it if you can think of the right thing to Google!) about sports people having time to think - their minds go into warp speed so everything slows down.

You might have experienced it if you've been in an accident - I've only had it once, when I ran someone over on my pushbike (doing cycling-leptons) I can still remember 50 years later flying through the air with plenty of time to think about what to do to minimise the pain when I hit the road.

if it's your job you train yourself to do it as required.

Cricketers said they have time to think what to do in the fraction of a second as the ball flies towards them, Usain Bolt said the 100m was the longest 9.8 secs of his life, plenty of time to look around to check where the others were, Lewis Hamilton said the 8 secs of the main straight gave him lots of time to read the pit board, check the dash, look at the crowd etc before the next bend.

Megaflow

10,386 posts

240 months

Tuesday 21st May 2024
quotequote all
BoRED S2upid said:
Megaflow said:
Lots.

Who decided on the alphabet?
Who decided 2+2=4 (same for all other number combinations)
The universe in general, but party expansion, what is it expanding into? what is at the end? There has to be an end, and what is beyond that end?
Why we spend 5 days a week working to live for 2?
Why my brain has an incredible ability to fk me over?
Women?
Etc
Why must there be an end? Add that to the list wink

The 5:2 thing has annoyed me since I started work it’s absolutely ridiculous.
I should of put in there, that no it doesn’t have to end, but for me, and I suspect a lot of humanity it surely must?

kevinon

1,697 posts

75 months

Tuesday 21st May 2024
quotequote all
Roofless Toothless said:
This is the Andromeda Galaxy. On a clear night you can see it with the naked eye.



It contains a trillion stars, and it takes light 150 years to get from one side of it to the other.

I find this hard to comprehend, but still easier to understand than why the wife wants to move house.
Actual LOL

InfoRetrieval

386 posts

163 months

Tuesday 21st May 2024
quotequote all
Tony Starks said:
Rice cookers.
Put rice in, put water in, perfect rice comes out regardless of what rice I put in.

If I cook it in a saucepan it is always gloopy
If you're genuinely interested here's how they work: Old-fashioned rice cookers are extremely clever (YouTube)

It's actually both simple and clever at the same time.

thegreenhell

19,551 posts

234 months

Tuesday 21st May 2024
quotequote all
Scotter said:
Expanding into what though? I’ve always wondered.
Also with regards to the big bang theory,I’ve always wondered how something was there to start with in order to kick start it all,so surely there has always been something about and therefore there can’t be a beginning of time as my small brain can understand,which means there’s always been an existence of sorts.Always.
I’m off to church…..
That's just when Universe.exe started running on a computer somewhere. But whose computer is it, and in what universe does that exist?

TUS373

4,936 posts

296 months

Tuesday 21st May 2024
quotequote all
Loads of things befuddle me.

Inflation .... someone puts their price up for their goods. The person buying it puts their prices up to afford it...and so on. Crackers really.

Car values. E.g a Lambo/Ferrari is metal, composites and glass. Because it has a big engine and a different shape to other cars...it costs the same as a house

Range Rovers/Land Rovers...how they sell any. They cost more and are less reliable, yet people pay money every month to pretend they own one.

TV programmes that come down the bell wire of a phone line.



shirt

24,319 posts

216 months

Tuesday 21st May 2024
quotequote all
Bradgate said:
Electricity.

Despite having a Physics A level, I never really felt I understood electricity in the way I understood, for example, the laws of thermodynamics or conservation of energy. I just ‘got’ those concepts on a fundamental level, but never felt I really ‘got’ electricity. All these years later, I’m not sure anyone really does understand it. They understand how to generate it, measure it, move it around and make use of it, but don’t really understand it conceptually.
I have spent 12yrs in the power industry and still don’t really understand it either. I am a clanky though not a sparky, so I just build the things and let magic take over.

Last Visit

3,202 posts

203 months

Tuesday 21st May 2024
quotequote all
Roofless Toothless said:
Tim330 said:
Roofless Toothless said:
This is the Andromeda Galaxy. On a clear night you can see it with the naked eye.



It contains a trillion stars, and it takes light 150 years to get from one side of it to the other.

I find this hard to comprehend, but still easier to understand than why the wife wants to move house.
I haven't looked it up but think it's comparable in size to the Milky Way so more than 150 light years across.
You are right. I’m even more flabbergasted now.
When we talk of light years, I find the concept of those hard to fathom sometimes. More than 150 years for light to get from one side to the other in the example above. Yet that same light would travel around the entire earth back to the starting point in 0.13 seconds and yet it takes over 150 years to cover one end of the Andromeda galaxy to the other. Thats just mind blowing.

Baldchap

9,151 posts

107 months

Tuesday 21st May 2024
quotequote all
Magnets.

I move a magnet near something magnetic and the other thing moves.

Don't give me all that potential energy crap, it was still, not storing anything, and it moved. Breaks the law of conservation of energy and is therefore magic.