imatfaal

Veins and venous blood do not tend to have a significant pulse. The pulse is overwhelmingly noticed in arteries and arterial flow. If you do not mean the pulse - which is simply arteries rhythmically engorging with blood as the heart pumps blood - then perhaps you mean the electrical pulse which is recognized by an electrocardiogram (ECG) or a sports chest strap heart monitor. The heart beats as a wave of nerve signal propagate through the heart and cause a sequential contraction - nerve signals are (very simplisitically) a cascade change in electrical potential across cell membranes; there are so many of these that the change in electric field is not isolated in the heart, you can detect them all the way across the chest (we conduct electricity quite well)

Great Post TenOz To be honest I worry now that the UK is veering towards your depiction of the United States. I think also the industrialisation of the penitentiary and the unhealthy percentage of your population who are incarcerated are both a driving cause and a terrible effect of the points you make

! Moderator Note Mike - you are allowed a lot of leeway but this form of sexism and stereotyping is against the rules and will not be tolerated. Do NOT repeat this form of adverse characterisation of any group of people. Do not respond to this moderation within the thread.

I think Randall's explanation is good - yes literal interpretation; everyone can see everyone else all the time. On the spoilers - it is always better to use spoilers so that people can read without the problem be ruined for them; this was my fault entirely -Sorry Spoiler tags work like this [spolier] text to be hidden [/spolier] which if you spell spoiler correctly gives this

Talking youtube and obviously science and tech - another shout out for my favourite (ok - one of my many favourite) youtube music videos Compressorhead - Ace of Spades (time to break out your best lemmy impression) None of this awful canadian teen rubbish

It is wrong because it is not right - there would be an internal contradiction if it were to be correct; ie the maths says the probability is 1/3:2/3 (stay:switch) which is not the same as 1/2:1/2 Why people think 50:50 (stay:switch) is correct is because they guess rather than do the maths. If you do the maths you get it right, if you use walking-ape logic you get it wrong. I think - if you really want to investigate the flawed reasoning you have to get into psych rather than maths and that your best avenue would be reading the literally hundreds (perhaps thousands) of internet threads on this very problem. There are lots of misguided souls out there who continue to bang on without the faintest glimpse of enlightenment. You say "trust me" - with respect No. This is SFN - you should pony up proof that this is manifestation of a deep set internal make up. And where are the studies - must have been done a long time ago as Monty Hall is very very famous and that would completely screw the validity of any test But there is no mathematical reason why people are wrong - just a lack of mathematical reasoning

there is a number of huge threads on coin/ball bearing weighing; including some neat proofs and algorithms. here is one of my favourites if you like this sort of thing - please no open spoilers here. And apologies I should have put my answers in spoiler tags http://www.xkcd.com/blue_eyes.html

Intuitively - you end up with Spilt tea and Phi calling you names for messing up his carpet. Heuristically - it must be the same ratio as you end up with the same amount in each cup. If you both started and ended with a cup of tea and a cup of coffee (however distributed) you must end with a cup of tea and a cup of coffee; and as each cup has same volume in at end the yo must have as much coffee in the tea cup as tea in the coffee cup

let cup be w and spoon z. x is tea and y is coffee. you end up with (wx+zy)*(w/(w+z) in the cup that you added to and then took from wy-zy+(wx+zy)*(z/(w+z)) in the cup that you took from and then added to both simplify to similar expressions (w(wy+zx))/(w+z) and (w (wx+zy))/(w+z) You will notice that they are the same apart from the x and y are switched ie you end up with the same ratio in each cup - but obviously one is ratio of coffee to tea and the other tea to coffee

Because humans are naturally bad at probability - it is something that a huge majority must learn rather than understand intuitively. There are many things like that - many of the topics here are also unintuitive BUT they do not crop up so regularly in common world experiences.

That is quite possibly the worse answer to Monty Hall I have seen. If you simply had a 50:50 chance then why swap - the clever part of the problem is that Monty always reveals a goat and by doing so changes the information you have and thus increases your chances (you have a 1/3 stay and 2/3 switch win probality

! Moderator Note Thread locked. Not science and not even cogent enough for religion. Fishtrembleatmyname banned as Sockpuppet of Ultimate Infinity FYG Sockpuppetry is the creating of second, third etc. accounts to support a main account, or to avoid sanctions, or to get away from a negative reputation. This is against the rules.

FishTrembleAtMyName has been banned as a sockpuppet of UltimateInfinity

Matthew Parris in the Spectator

You think it is impossible to write a sentence which is not clearly distinct from a statement until the last word. You think it is impossible to write a sentence which is not clearly distinct from a statement until the last word?

! Moderator Note OK enough already. This is not a crime website nor a conspiracy theory website. I am locking this thread - it is in poor taste prima facie it is conspiracy rather than science it seems to cast aspersions at, and is getting close to accusing those who are not here to defend themselves on the wildest chance that any of the above is true this is the wrong forum in which to present it and it should not be publicised If you wish to discuss any of the forensics, crimonology, or legal aspects in a hypothetical scenario or in a case which has been through the courts then open a new thread in the relevant forum

There is a new meme on Twitter and Facebook with people making up definitions for 'a farage' and 'to farage' - I did like the suggestion that within 20 years we would be using farage as a word meaning a political fustercluck with dire and longterm consequences which could have been easily avoided. Although my favourite was 'farage' - the foul smelling liquid that is generated by a rubbish bin full of waste on a hot day

If they were gonna try to impose Donald Trump on me I might become a sudden fan of the 2nd Amendment and find a well-regulated militia to become part of

marieltroken has been placed in the mod-queue for the foreseeable future - the key to getting out of the mod-queue is to post intelligible and meaningful messages not garbage

Whilst Bill might be a bill of a sh!t It turns out that the man so keen to see Bill burn for various sexual and other shennanigans was more than happy to cover up proper sexual crime if the perpetrator played sport for his university team - I always thought that Ken Starr was a prurient bully rather than a puritan truth-seeker; nice to know he finally got sacked.

I will accept no variation - although Clapton et al and Tom Petty et al both had fair stabs at it at the tribute concerts. The above, well... And the ultimate cover version is Jeff Buckley - Hallelujah. Cohen's orginal is good - but Buckley's version on Grace is IMN-S-HO the best individual track ever recorded Trent Reznor - said it was like losing a girlfriend, that was his song till he heard Cash and knew it could never be his again.

So multi-billionaire (!?) Donald Trump is now soliciting campaign funds from overseas politicians - surely that's illegal; can someone report him please. Lovely response from UK MP

And you are getting the frames wrong - you are using the formula which takes velocities in A's frame and gives you the speed of B relative to C. What you need to do is the formula which takes velocities in the centre of mass frame of B and C (ie the one in which they are travelling equal and opposite velocities) and transform that to give a velocity in A. Not the same no matter how much you say it is. I provided one of the formalae for one basis above

Yep - Nostalgic Escapism. It is quite fun to watch people of my parents generation destroy the make-believe sometimes; Nostaligist --> "Ah - the blitz spirit; London all pulled together" My Mum --> "It wasn't like that for 99% of the time - apart from brief moments we were scared, hungry, mean, and hating every second of it"

How can you not have had a basic science education - is it not mandatory in the country you grew up in? That is a real shame - I hope you are able to catch up soon because the nut and bolts of science are brilliant fun and allow access to a world of investigation