Kev M
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Posts posted by Kev M
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It would be easier to weigh them rather than counting......if you filled the 1 litre jar with smarties.....weighed it.....emptied the smarties out...weighed the jar again and then weighed an individual smarty....
Easy peasy....
....hold on....
Is the singular form of smarties.....smarty or smartie ?
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13 hours ago, saac said:
Number of smarties in 1 litre - it's a kind of Feynman problem mentioned in a different thread - focus on order of magnitude, ignore true geometry and the likes of packing efficiency etc.
Make an estimate of a smartie volume , say 12 mm in diameter x 4 mm thick (forget it's an oblate sphere , simplify it to a cylinder)
so Vol = Area x depth, 3 x (6 x10^-3)^2) x 4 x 10^-3 = 3 x 36 x10^-6 x 4 x 10 ^-3
= 3 x 144 x 10 ^ -9 , approximates to 432 x 10 ^-9
let's make it a bit easier and call that 400 x 10 ^-9 m^3
1 litre = 1 thousandth of a m^3
so Number smarties in I litre = 1 x 10 ^ -3 / 400 x 10 ^ -9
= 1/400 x 10 ^6
= 2500 smarties !
if you want to bet go for something either side by say 5 %
* of course the smart ass answer is, "depends on how big the smarties are"
Jim
and we think the average person in a crowd uses this method........ ?
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On 19/03/2023 at 09:29, speckofdust said:
Ah....looks like there was a misunderstanding, but anyway, considering the premise that people have seen the jar and the size of the candies before making the prediction, then intuition (!!!) tells me that this phenomenon is no longer an incredible one . I guess it is intuition derived from life experience after all, like estimating someone's height, speed of a car, muscle memory when lifting an object etc that leads to a ball park figure. The more people you throw in to make the guess, the extremely wrong responses are drowned out by the closer to normal ones, ie resulting in the normal distribution. Obviously this response does not contain any sound scientific evidence and invokes the nebulous concept of intuition, which nevertheless seems to be a good approximation.........
People still seem to missing the point regarding bias...
Someone's height....speed of a car and weight of objects are all things we are familiar with and have a great deal of "life experience" of.
Counting sweets in a jar is not something we do frequently so we have little if any experience of this.
For example ( without googling it ) how many smarties could you fit in a 1 litre milk bottle ?
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Had a little browse....very impressed with the website....lots of knowledge 😀
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On 07/03/2023 at 23:17, vlaiv said:
Only if there is no bias.
If there is bias of some sorts - with increased number of people guessing - you'll be closer to real value + bias rather than real value.
This is correct.....there will be a bias due to the lack of the average persons knowledge/experience in estimating the value.
If people were told you could fit a certain number of smarties in a 1 Litre jar and then you showed them a jar full of smarties the "wisdom of the crowd" would probably work.
People would actually be estimating the size of the jar and hence working out the number of smarties based on the knowledge given above.
It is likely the average estimation of the size of the jar may be quite accurate.
However it is likely that the average person does not have this knowledge and we would most likely over or underestimate due to common misconception of the value.
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15 hours ago, Bigstar101 said:
Thanks for your replies. I will take a looks at the links kindly posted. I want to see as far as possible but also want to see the planets. As I said just getting started.
Which part of the world are you in ?
This can help as there may be local shops. star parties or people who may be willing to provide hands on assistance.
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Greeting from just across the Umber ....😀
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13 minutes ago, Richard Wesson said:
I think I may be close to solving this. As suggested by Steviedvd, I connected the NUC aand the laptop to the wifi of the mini router. Suddently, the LAN connection on the NUC showed the mini-router was connected! I retstarted and without wifi, the mini router is still connected.
Did the NUCs IP address change from 192.168.0.2 ?
14 minutes ago, Richard Wesson said:Following mac-c's suggestion going into the network listing on the laptop I clicked on the NUC and initiated remote connection. This appears to connect. The only issue I now have, is that when signing in, I get as far as the sign in page and the user states 'other user' and does not recognise the password...
I thought this worked before when you had it connected to your wifi router ?
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Looking through the attachments again I still think that this is a simply an IP address issue.
I believe that either
A: both the NUC and the laptop have the same IP address 192.168.0.2
or
B: There is no DHCP service running on the mini router "probably because Smart IP ( DHCP ) is on "
Either one would cause lack of connection between the NUC and the laptop.
My money is on B:
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4 minutes ago, Kev M said:
Might be tempted to turn off Smart IP ( DHCP ) and configure the DHCP settings manually as well.
Looking at the info that I can see Smart IP ( DHCP ) disables the DHCP server ?
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Might be tempted to turn off Smart IP ( DHCP ) and configure the DHCP settings manually as well.
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If I am reading this correctly----looking at the attachments that were sent
The NUC can be accessed from the laptop if:
NUC connected via Lan to wifi router---Laptop connected wirelessly to wifi router
NUC connected via wireless to wifi router---Laptop connected wirelessly to wifi router
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The NUC cannot be accessed from the laptop if:
NUC connected via Lan to portable router---laptop connected wirelessly to portable router
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IP address for Laptop when connected to portable router needs to be checked to make sure it is not the same as the NUC ip address
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8 hours ago, StevieDvd said:
No that's perfectly acceptable, did it all the time at work. And even now I connect to a Rpi/Asiair wirelessly and my home network. That's why we need to see ipconfig details to see which connections are being made on each adapter.
Not sure about a NUC using both......however I am assuming the USB adapter can easily be unplugged.
However .''as mentioned.... definitely need to check the IP address of the laptop when connecting to the portable router via wifi
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I would still think connecting to both ethernet LAN and wifi at the same time may cause issues
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Looking at the "LAN to mini router pdf"
The IP address shown is that for the NUC wired LAN connection to the mini-router but it also seems to be connected to the wifi to the plusnet router at the same time ?
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Like these
https://www.amazon.co.uk/Locking-Connector-Female-Locable-StPlandard/dp/B08BXYRT8L
Plenty of others out there
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Try contacting ASI, they may still do a repair....doesn't cost anything to ask.
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Looking at their website they may be offering a free repair ?
and hello to all the Lincs boys.....👍
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Don't know if this is relevant or not
https://astronomy-imaging-camera.com/news/oil-leak-issue-on-asi2600mc-pro-and-other-cameras.html
Kev
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There is a clear difference between true Redshift and reddening caused by scattering in that the Fraunhofer lines will be shifted in the former but not the latter.
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9 hours ago, Ags said:
Is an alternate explanation possible that there is no expansion at all but "light gets tired" and over the course of billions of years simply shifts to a lower frequency, just like neutrinos change between different types as they travel?
There is still a theory ( amongst others ) that as light travels through the "Aether" it is slowed down by about 20km/s every million lightyears it travels through.
This may give the same appearance as the universe expanding.
( Aether = spacetime & all associated gravitational fields etc......basically the bits between the stars )
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43 minutes ago, saac said:
So the photon experiences no time in crossing infinity, and by SR's slight of hand it also takes a little bit of time like 13 billion years
This was posted elsewhere (way to go Hubble) just goes to show frames of reference are everything when it comes to time travel and careful interpretation of what those pesky photons are actually doing I think we have found our time machine - HST.
Jim
Personally I would be giving my objective lens a wipe looking at that one.....
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2 hours ago, andrew s said:
For a large black hole you might not even notice you have passed the event horizon.
If my maths is correct a black hole with a mass of about 1 Billion Billion suns may have a gravitational field at its event horizon similar to that here on earth
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4 minutes ago, Elp said:
it's also a little odd most if not all galaxies have one in the centre.
I think this is how all ( spiral ) galaxies are made....it would be odder if they didn't have one.
Hello From Lincolnshire
in Welcome
Posted
Literally just down the road from me ( Heapham )
Happy to help where I can.....I can get rid of the pies & beer for you....😀
Kev