computers and anything else that relies on microchips. It’s quite evident that they are actually powered by spirits and the design of the circuit board is actually a magic rune which tempts the spirits in to do your bidding.
I'm old enough to have been a home computer enthusiast from quite close to the beginning. So I know (or I used to) how to build logic gates out of transistors; how to do arithmetic with logic gates; kind of a bit about how CPUs work, how device busses work (loosely); a bit about how device software is written, how OSes apps are written; how networking works and so on. I also know how transistors work and at uni I learned how semiconductors work. So I have a reasonable idea of the full stack 🙂
I’ve seen up to 10,000 g quoted for F1 engines.
F1 engines are things of wonder. Anyone else remember when BMW got 1500bhp* out of what was essentially the block out of the then current 316? Granted it was only for a couple of laps...
*Wikipedia has reminded me this was an estimate as the dyno broke when they went past 1280bhp
The gold-white vs blue-black dress internet debate a few years prompted some pretty interesting research about colour perception
Nah, that was just a crap photo.
You’re asking on the wrong forum, no-one rides bikes on here.
We just argue about them. 😉
Surely then he's in exactly the right place.
what about full-price birds?
something something "going cheep"
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!
I haven’t had a CT scan , but I’ve had an MRI and I think the principle is that it’s so loud that it makes your bones shake, and it senses the vibration.
CT is just a complicated X-ray.
MRI/NMR is a huge magnet powerful enough to make all the hydrogen atoms in your body point he same way. You then apply a smaller oscillating field and measure the response.
If you know where they are but not what they are (i..e a chemical sample) you can use the response to draw a graph and determine things about the length/energy in the bonds. If you know the energy in the bonds (i.e. you narrow it down to just looking for the spikes on the graph that indicated water) then you can work out where they are in the magnetic field and draw a picture.
Well… tones aren’t a unit of force, just saying. Tonnes are mass; only gravity makes the mass apply a force. Could say “like being crushed by 100 tonnes” I guess?
Well, yes. But you still measure your tyre pressure in psi don't you? So people are comfortable with the concept of kgf / lbf.
And a layperson can visualize 10 tones, it's a small lorry. 98,100N is a bit more abstract and implies accuracy that isn't valid, 10 +/-1 is about right, 98,100 +/- 9,810 sounds like your making stuff up.
And how do you define a newton anyway, in the SI system it's the force required to accelerate 1kg @ 1ms^-2.
And you used g's as a unit of acceleration, which is the same thing (g being the not-a-constant between mass and weight).
^ Ohh shit, the scientists have arrived.
Ohh shit, the scientists have arrived.
We're like bike mechanics.
Feed us biscuits if you want anything and try not to get us talking on our specialist subjects unless you want to be bored to death.
"Scientific Communicators" are the real wizards, how can Brian Cox and Hanna Fry be both that clever and able to communicate with the outside world is the real wizardry.
A swallow born here in August can fly around for 6 weeks and take off ofter his family all the way back to Africa and maybe be the only one to return to the exact nest he was born in the following spring. How?
Birds can see things that humans cannot see, eg the earth's magnetic field. And I literally mean "see" as with their eyes.
The reaction to a visual stimulus is instinctive. As when a cat that sees a mouse and the reactions of both the cat and the mouse.
It is amazing though, especially to humans who lack the sensory perceptions.
Mirrors. A room with a mirror in it is fractionally colder than it would be without one. Measure it if you don't believe me.
What else do they steal, apart from heat?
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?
Anyone else remember when BMW got 1500bhp* out of what was essentially the block out of the then current 316?
two stories about the famed BMW F1 engine that used a 1.5lt 4 cyl. bock that originally developed 80bhp
Story one: they found that aged blocks were the best for building them so they starting tracing taxi drivers with the right car and more than 100,000kms on the clock and would offer them a brand new Beamer in exchange for their ratty old ones. When that source dried up, they had a bunch sitting outside the factory rusting away that BMW 'encouraged' the workforce to wee on to age them.
Story two: They had issues with detonation that they were really struggling to solve, until some old boy in the BMW fuel division piped up with "Ah yes, we used to have this problem with the engines in the Bf109, I've still got the fuel recipe at home we used to stop it happening". For a while (until fancy fuel was banned) the Brabham team used fuel developed for Nazi warplanes..
Gerhard Berger said you didn't really steer the car, just aimed it at the next corner and held on for grim death...
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?
^ Ohh shit, the nitpickers have arrived.
😉
We're talking 15mm here. How big is the difference exactly depending on the mapping system?
Quantum physics and relativity is still a field of physics populated by some very clever monkeys with some very clever tools looking at some very hot fire and going “oooooohhhhhhhh”, Just like they did in a cave a million years ago.
Just because you said that I'm going to go and stare at them now
A time will come when, due to entropy, there will be no light in the universe.
Every star will have died. Any sentient being still around will see nothing but a uniform blackness in their sky.
Right now every square whatever of the sky is covered by stars, the blackness that you see (don't see?) between the visible stars is still stars, just ones that are so far away their light hasn't reached us yet.
^ Ohh shit, the scientists have arrived.
Just ye hope the spelling police don't rock up.
For me it's radio and other EM waves. Not that they exist, it's just a frequency wave and I get frequency, V=fλ, etc.
It's that you can transmit stuff in them. The wave's the same frequency, but half a minute ago it was carrying Nirvana and now it's Dua Lipa
Makes. No. Sense.
Boats, how can that many tons of steel float on water?
The wave’s the same frequency, but half a minute ago it was carrying Nirvana and now it’s Dua Lipa
Makes. No. Sense.
I know, I mean who would rather listen to Dua Lipa than Nirvana?
Boats, how can that many tons of steel float on water?
Archimedes principle innit.
Boats, how can that many tons of steel float on water?
They contain an awful lot of air.
slip gauges messed with head for a bit,
Wringing is the process of sliding two blocks together so that their faces bond. Because of their ultraflat surfaces, when wrung, gauge blocks adhere to each other tightly. Properly wrung blocks may withstand a 300 N (67 lbf) pull.[5] The mechanism is a combination of:[4][5][needs update]
Vacuum applies pressure between the blocks because the air is squeezed out of the joint[note 1]
Surface tension from oil and water vapor that is present between the blocks
Molecular attraction that occurs when two very flat surfaces are brought into contact; this force causes gauge blocks to adhere even without surface lubricants, and in a vacuum
It is believed that the last two sources are the most significant.[4] Experiments with friction of the blocks suggest also that the removal of the oxide film from the steel surface by wringing plays an important role in the wringing action.[7]
And electricity to a certain degree,
On our first day in the second year of Electronic/Mechanical Engineering our professor looked at us and said “forget everything you learned and understand from last year”, (or words to that effect) he wasn’t wrong………I developed a stress headache for the first few months and started grinding my teeth whilst asleep so had to wear a guard, I eventually cracked a molar.
I should’ve studied Art/Classics/English Literature or something easy as we never had free time.
25 years later I’m still unsure if I “actually” understand it or whether I “know enough” to get by without killing myself
Nah, that was just a crap photo
Striking individual differences in perception
Older women more likely to see white/gold than blue/black. Depends on the wavelength your brain perceives/prefers and corrects for it. People who spend more time outdoors have different perception and people seeing the dress as white/gold had brain areas interfering in thier perception.
😉
We’re talking 15mm here. How big is the difference exactly depending on the mapping system?
I can't remember.... A bit... It just feels odd for a total station to be claiming accuracy to an inaccurate thing... And i am trying to appear more cleverer than wot i are.
Edit. About 5m and the extremes of OS grid.
They contain an awful lot of air.
It doesn't make the boats any lighter.
Striking individual differences in perception
All of that may be true. But for this specific example I ran it through a colour picker in a paint package. It was nothing to do with perception or wavelengths or optical illusions or what have you, it was simply a poor photo which went viral. There was another one with some shoes, that was the same story, there was nothing clever going on, just the white balance was poleaxed.
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.
somafunk
Full Member
slip gauges messed with head for a bit,Wringing is the process of sliding two blocks together so that their faces bond.
Interesting!👍
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.
Nope, self evidently magic 😉
johndohFree Member
This is the problem – I am NOT at all fine with the universe expanding. What is it expanding into? What is it beyond the universe that enables the universe to expand into it? Is it something (it must BE something)? So what is it? Or is it nothing? If it is nothing, then how can the universe occupy nothing?
Don't think of it as the universe expanding, think of it as the amount of nothing getting smaller
Don’t think of it as the universe expanding, think of it as the amount of nothing getting smaller
Stoppit! How can nothing get smaller? 🤯
Don’t think of it as the universe expanding, think of it as the amount of nothing getting smaller
Woah.
Don’t think of it as the universe expanding, think of it as the amount of nothing getting smaller
Could there be dark matter/energy beyond the universe though? That would explain the constant expansion. Then again, What's beyond that dark matter/energy?
Also, if that nothing is infinite, it can't get smaller?
To be clear, I haven't a clue what I'm talking about.
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.
Spectroscopy was definitely built into the universe software as a way of telling us that we’re in a simulation.
edhornby
Full Member
ConsciousnessYeah that’s mad, a load of electrical signals passed through watery protein and … Er….
It's the fact that those electrical signals account for what we assume is reality.
We could all have our brains* in jars wired up to god knows what type of simulation apparatus. What is reality?
Then my mind just gives up and tells me that we have to assume reality is just that or we go mad.
Philosophy is probably the most mind boggling area to me, well, as much as the whole universe thing anyway.
* We only "know" we have brains due to the same electric stimulus, so who knows what we really use to process reality?
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.
The brown stuff in between the wafers in a Kit-Kat.
Apparently this is just mushed up Kit-Kats recycled from the imperfect ones that are a by product of the manufacture process
Which begs the question..How did they make the first one?
Aircraft. You expect me to believe that you can chuck a metal tube weighing hundreds of tonnes down a road at 100mph and it just magically takes off?
What is more worrying is someone suggested
'have you tried filling it with high explosive, pressurising it and then throwing it through the air at 500mpg at a patch of tarmac on another continent?'
'yep that's working now thanks'
The nothing is the same size, there's just less of it as the universe expands into the space that wasn't there
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.
The air inside a boat does not make the steel construction any lighter.
Obviously a boat full of water is heavier than a boat full of air but the structure remains the same weight.
If I stood on a mouse would that make a 14 stone mouse? For clarity I weigh approximately 14 stone.
The brown stuff in between the wafers in a Kit-Kat.
Apparently this is just mushed up Kit-Kats recycled from the imperfect ones that are a by product of the manufacture processWhich begs the question..How did they make the first one?
Ooh, I know this one. The filling isn't wholly rejected Kit-Kats, they just add it to the mix to save waste. It's pretty much a trace ingredient. There would have to be a lot of imperfect Kit-Kats for that to be sustainable otherwise.
The nothing is the same size, there’s just less of it as the universe expands into the space that wasn’t there
I wrote, thought, deleted and rewrote about 5 replies to that before giving in.
That doesn't make sense... no wait yes it does... but... nonsense... actually it's... hang on... 🤯 💀
Forget it
The air inside a boat does not make the steel construction any lighter.
"net"
If I stood on a mouse would that make a 14 stone mouse? For clarity I weigh approximately 14 stone.
Are you planning on floating? You'd likely fare less well than the mouse on its own.
Also, poor mouse. You monster.
For clarity I weigh approximately 14 stone.
and if you fill your lungs with air and held your breath you would float in water and would still weigh 14 stone. Blow that air out and you would sink despite not changing your mass measurably.
Because magic.
