Things you always wanted to know the answer to [Vol. 3]
Discussion
captain_cynic said:
Ayahuasca said:
Urine and hydration.
When I am super hydrated my urine is colourless.
When I am dehydrated my urine is dark yellow.
I deduce that colourless super-hydrated urine contains more water than is strictly needed to excrete whatever wastes urine excretes.
Generally but not strictly. Diuretics like alcohol usually cause colourless urine but can still dehydrate. Not that you should let that discourage you from a pint, just stay hydrated.When I am super hydrated my urine is colourless.
When I am dehydrated my urine is dark yellow.
I deduce that colourless super-hydrated urine contains more water than is strictly needed to excrete whatever wastes urine excretes.
Ayahuasca said:
My question: If I am super hydrated, and then do not urinate but exercise hard and drink no more water, is the excess water contained in my bladder re-absorbed into the body?
IIRC, no. If you're not drinking enough water your body will start to leach it from other parts of your body (I.E. your muscles). The bladder contains waste and can be toxic if re-entered into the body.The odour of your urine is an indicator of how much toxin and bacteria is in there. That's why your urine reeks when you've had a skinful. OTOH this isn't strict either, bad smelling pee could also mean you have a urinary tract infection.
Now, there's a question - why do some people get asparagus pee and others don't?
MartG said:
Roofless Toothless said:
Or have been eating asparagus.
Now, there's a question - why do some people get asparagus pee and others don't?
No idea - but after a couple of pints of Strongbow mine starts smelling like apple sauce Now, there's a question - why do some people get asparagus pee and others don't?
Abbott said:
European Union member states must also grant type approval to vehicles meeting similar EU standards. The ones covering speedometers[7][8][9] are similar to the UNECE regulation in that they specify that:
The indicated speed must never be less than the actual speed, i.e. it should not be possible to inadvertently speed because of an incorrect speedometer reading.
The indicated speed must not be more than 110 percent of the true speed plus 4 km/h at specified test speeds. For example, at 80 km/h, the indicated speed must be no more than 92 km/h.
The standards specify both the limits on accuracy and many of the details of how it should be measured during the approvals process, for example that the test measurements should be made (for most vehicles) at 40, 80 and 120 km/h, and at a particular ambient temperature and road surface. There are slight differences between the different standards, for example in the minimum accuracy of the equipment measuring the true speed of the vehicle.
So basically they Must all ways show a higher inficated speed but with a limit to to how high. So there is a general feeling that they over read by 10%
US cars generally indicate actual speed. Most European cars indicate actual speed in the US. However, Porsche are way off and it’s annoying as hell. I have veryfied this with many data points including having other cars follow at various speeds and having multiple sat Nav/ phones tracking. The indicated speed must never be less than the actual speed, i.e. it should not be possible to inadvertently speed because of an incorrect speedometer reading.
The indicated speed must not be more than 110 percent of the true speed plus 4 km/h at specified test speeds. For example, at 80 km/h, the indicated speed must be no more than 92 km/h.
The standards specify both the limits on accuracy and many of the details of how it should be measured during the approvals process, for example that the test measurements should be made (for most vehicles) at 40, 80 and 120 km/h, and at a particular ambient temperature and road surface. There are slight differences between the different standards, for example in the minimum accuracy of the equipment measuring the true speed of the vehicle.
So basically they Must all ways show a higher inficated speed but with a limit to to how high. So there is a general feeling that they over read by 10%
It has been suggested that it’s due to the variety of Wheel sizes available. But, you can specify the wheel size for when you switch between Summer and Winters. Also, my car came with the largest option of wheel so should be the most accurate.
Another fact about the difference between US and UK..... UK Porsche get traffic for free but US have to pay $4 a month. Even at free cost it doesn’t represent value for money as it seems to tell you there is traffic but doesn’t do anything with it. One benefit of having a US spec though is the off button for stop start means off. I press it once and it stays off for ever. UK cars have to be told every time you start the engine.
P-Jay said:
Whilst we're chatting about Sat-Navs and speed.
Why does everyone I know 'know', with absolute certainty that the readout that actually connected to the wheels on the car, the speedometer is wrong, and the device that is trying to measure it's distance from a number of satellites that are 22k miles above the earth or whatever and is right?
The GPS built into my phone can is pretty as being accurate to maybe 5m, but can be as bad as 20m - my Sat-Nav in my car get confused from time to time if there's a say a B-Road running near parallel with a motorway, yet we assume when it comes to speed it's a given that a sat-nav showing a 3mph difference is always right.
It is pretty accurate. The technology behind it is pretty impressive considering it has been around since the late 70s. They do however use an accelerometer to assist in working out how it is moving. I think they can only pinpoint your location every few seconds and can take a while to lock on when turned on for the first time. This is why it will sometimes assume you are taking the route it is saying for a few seconds if you disobey it.Why does everyone I know 'know', with absolute certainty that the readout that actually connected to the wheels on the car, the speedometer is wrong, and the device that is trying to measure it's distance from a number of satellites that are 22k miles above the earth or whatever and is right?
The GPS built into my phone can is pretty as being accurate to maybe 5m, but can be as bad as 20m - my Sat-Nav in my car get confused from time to time if there's a say a B-Road running near parallel with a motorway, yet we assume when it comes to speed it's a given that a sat-nav showing a 3mph difference is always right.
One odd thing mine does is when I leave a tunnel it momentarily goes a bit mad and the speed readout goes all over the place, so it then beeps at me for speeding as it thinks I emerged from the tunnel doing like 150km/h instead of about 30.
mattyn1 said:
Not one I have always wanted to know but rather just thought of watching the ancestry.co.uk advert!
If everyone had their dna stored in say an access database could you then run a report and produce a global family tree?
I appreciate you need quite complex algorithms .........
I'll ask an extension question too...If everyone had their dna stored in say an access database could you then run a report and produce a global family tree?
I appreciate you need quite complex algorithms .........
In what way is my DNA profile similar too, reflective of, linked to, based on the DNA profiles of my parents?
If you have my parents' DNA, for example, can you define my DNA profile without having an example of it?
V8mate said:
I'll ask an extension question too...
In what way is my DNA profile similar too, reflective of, linked to, based on the DNA profiles of my parents?
If you have my parents' DNA, for example, can you define my DNA profile without having an example of it?
No.In what way is my DNA profile similar too, reflective of, linked to, based on the DNA profiles of my parents?
If you have my parents' DNA, for example, can you define my DNA profile without having an example of it?
Each of your parents have two sets of genes, one from each of their parents. You inherited a single set from each parent which was constructed by combining genes from each set. Say lines 1 -25 from one set, 26-34 from the other, 35-49 from the first one again and so on. Essentially at random.
So on average you will have 50% of the same genes as any of your siblings. A DNA profile of a virtual sibling could be defined from your parents genes which would be a 50% match for you. Would be literally as like you as your same sex sibling would be expected to be. But not quite you.
Watching the BBC2 show about Gianni Versace, the suspect is seen driving towards Miami, and just to ram it home there's a shot of a road sign that says "Miami 650" on it. What does the "650" signify? Surely it's not the distance to Miami? Do they have a signs like that, just listing one destination 650 miles away? Or just for TV?
droopsnoot said:
Watching the BBC2 show about Gianni Versace, the suspect is seen driving towards Miami, and just to ram it home there's a shot of a road sign that says "Miami 650" on it. What does the "650" signify? Surely it's not the distance to Miami? Do they have a signs like that, just listing one destination 650 miles away? Or just for TV?
Miami is where I95 terminates at its southern end, so it would be reasonable to put a sign up showing distance to itdroopsnoot said:
Watching the BBC2 show about Gianni Versace, the suspect is seen driving towards Miami, and just to ram it home there's a shot of a road sign that says "Miami 650" on it. What does the "650" signify? Surely it's not the distance to Miami? Do they have a signs like that, just listing one destination 650 miles away? Or just for TV?
650 miles? Pfft.
mattyn1 said:
Not one I have always wanted to know but rather just thought of watching the ancestry.co.uk advert!
If everyone had their dna stored in say an access database could you then run a report and produce a global family tree?
I appreciate you need quite complex algorithms .........
I'm sure it would both be possible and valuable knowledge in breaking down national/cultural barriers.If everyone had their dna stored in say an access database could you then run a report and produce a global family tree?
I appreciate you need quite complex algorithms .........
Check out this image of the descendents of the founding fathers of the USA:
https://www.cbsnews.com/news/founding-fathers-desc...
glazbagun said:
mattyn1 said:
Not one I have always wanted to know but rather just thought of watching the ancestry.co.uk advert!
If everyone had their dna stored in say an access database could you then run a report and produce a global family tree?
I appreciate you need quite complex algorithms .........
I'm sure it would both be possible and valuable knowledge in breaking down national/cultural barriers.If everyone had their dna stored in say an access database could you then run a report and produce a global family tree?
I appreciate you need quite complex algorithms .........
Halmyre said:
droopsnoot said:
Watching the BBC2 show about Gianni Versace, the suspect is seen driving towards Miami, and just to ram it home there's a shot of a road sign that says "Miami 650" on it. What does the "650" signify? Surely it's not the distance to Miami? Do they have a signs like that, just listing one destination 650 miles away? Or just for TV?
650 miles? Pfft.Yes, you routinely get distances signs more or less like that. But, they usually have two or three destinations on them (along the route you are travelling). And they are typically much shorter distances, maybe 200 miles at most for a major population center. Kind of depends on where you are and where you are headed. A Miami 650 miles sign was likely strictly crappy story telling for TV.
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