Things you always wanted to know the answer to [Vol. 3]
Discussion
OpulentBob said:
Right. Bear with me.
Pressure differences cause wind, or at least air currents. EG opening your car window means the air running past the window is at a low pressure than the air in the car, due to Bernoulli's principle, therefore the air from inside the car rushes out, making it blustery and sucking things like fag ash, old receipts and dog's tongues out of the window.
If I was able to mount a large fan on the dash, capable of pushing a fat amount of air out at (eg) 70mph, then if I drove at 70mph with the window open (matching the speed inside and outside the car), would the effects cancel, and therefore not be windy enough to suck things out?
You wouldn't need a fan as such, but a compressor / regulator to ensure that the pressure inside the car is equal to that outside of it. This would need to be responsive to the speed of the car and thus the changing exterior pressure. But you would still have the issue of the air outside meeting the air from inside and creating it's own little micro-pressure area around the window into which your fag ash and sweet wrappers would simply hover in until you come to a stop.Pressure differences cause wind, or at least air currents. EG opening your car window means the air running past the window is at a low pressure than the air in the car, due to Bernoulli's principle, therefore the air from inside the car rushes out, making it blustery and sucking things like fag ash, old receipts and dog's tongues out of the window.
If I was able to mount a large fan on the dash, capable of pushing a fat amount of air out at (eg) 70mph, then if I drove at 70mph with the window open (matching the speed inside and outside the car), would the effects cancel, and therefore not be windy enough to suck things out?
TBH - I have no idea but I think that sounds right! Gordon Murray obviously had similar ideas:
StevieBee said:
OpulentBob said:
Right. Bear with me.
Pressure differences cause wind, or at least air currents. EG opening your car window means the air running past the window is at a low pressure than the air in the car, due to Bernoulli's principle, therefore the air from inside the car rushes out, making it blustery and sucking things like fag ash, old receipts and dog's tongues out of the window.
If I was able to mount a large fan on the dash, capable of pushing a fat amount of air out at (eg) 70mph, then if I drove at 70mph with the window open (matching the speed inside and outside the car), would the effects cancel, and therefore not be windy enough to suck things out?
You wouldn't need a fan as such, but a compressor / regulator to ensure that the pressure inside the car is equal to that outside of it. This would need to be responsive to the speed of the car and thus the changing exterior pressure. But you would still have the issue of the air outside meeting the air from inside and creating it's own little micro-pressure area around the window into which your fag ash and sweet wrappers would simply hover in until you come to a stop.Pressure differences cause wind, or at least air currents. EG opening your car window means the air running past the window is at a low pressure than the air in the car, due to Bernoulli's principle, therefore the air from inside the car rushes out, making it blustery and sucking things like fag ash, old receipts and dog's tongues out of the window.
If I was able to mount a large fan on the dash, capable of pushing a fat amount of air out at (eg) 70mph, then if I drove at 70mph with the window open (matching the speed inside and outside the car), would the effects cancel, and therefore not be windy enough to suck things out?
TBH - I have no idea but I think that sounds right! Gordon Murray obviously had similar ideas:
Thanks!
The Don of Croy said:
Hugo a Gogo said:
the young hippy travellers and the Amsterdammers give the world a false impression of NL,
That and the advocaat.I was reading about the Anglo-Dutch wars, and it was a feature that the Dutch didn't press-gang their natives unlike us Brits, due to their tolerant and freedom respecting ways. So that's 400 years of pleasant-ness, except when it comes to bargaining (if you've negotiated with them you'll know what it's like).
OpulentBob said:
Right. Bear with me.
Pressure differences cause wind, or at least air currents. EG opening your car window means the air running past the window is at a low pressure than the air in the car, due to Bernoulli's principle, therefore the air from inside the car rushes out, making it blustery and sucking things like fag ash, old receipts and dog's tongues out of the window.
If I was able to mount a large fan on the dash, capable of pushing a fat amount of air out at (eg) 70mph, then if I drove at 70mph with the window open (matching the speed inside and outside the car), would the effects cancel, and therefore not be windy enough to suck things out?
Is the car on a conveyor belt?Pressure differences cause wind, or at least air currents. EG opening your car window means the air running past the window is at a low pressure than the air in the car, due to Bernoulli's principle, therefore the air from inside the car rushes out, making it blustery and sucking things like fag ash, old receipts and dog's tongues out of the window.
If I was able to mount a large fan on the dash, capable of pushing a fat amount of air out at (eg) 70mph, then if I drove at 70mph with the window open (matching the speed inside and outside the car), would the effects cancel, and therefore not be windy enough to suck things out?
FiF said:
If a dog which reacts when it sees other dogs walks into a room with a full length mirror, why doesn't it react when it sees itself for the first time in the mirror?
It might have seen a reflection before? Dogs smell an awful lot so a reflection probably wouldn't bother them that much.Theres actually a mirror test used on everything from pigeons to children as evidence of self awareness levels in animals.
Dogs also understand pointing and words in our language, which is pretty mental. I wonder if AI's have worked that out yet.
Willy Nilly said:
Are there any health implications for black people that move to cold, dark, wet places? The native people that live in such places tend to be fair of skin and get incinerated when they go to hot places.
I know that many Asians can't process alcohol as quickly as we can and cold dark wet places are more likely to have a drinking culture. The Black Health page on the NHS lists higher chances of high blood pressure as the only thing I could think of that may be worsened by moving to, say Scotland, but I don't know if it applies equally to a place like Sweden.
http://www.nhs.uk/Livewell/Blackhealth/Pages/intro...
I'm also not sure that just getting sunburn is really a health implications as having black skin doesn't stop you from getting skin cancer.
Edited by glazbagun on Tuesday 8th August 23:13
FiF said:
If a dog which reacts when it sees other dogs walks into a room with a full length mirror, why doesn't it react when it sees itself for the first time in the mirror?
They do react, there was footage on TV the other day of one which saw itself in the mirror, it looked very scared and ran off!Willy Nilly said:
Cold said:
Dear Monty Don and Gardeners' Word,
A number of years ago I was travelling through central and very rural France. To the side of one of the arrow straight roads was a few fields of glorious sunflowers all standing tall and to attention. Swathes of the things and stunning to see, but not a bamboo stick in sight.
Why is it - how is it - that when I grow a cluster of the things over here i have to manufacture scaffolding to give mine a chance of not flopping over or snapping in two?
Do the cunning French mix viagra into the fertiliser or are they just naturally more virile?
The people growing them commercially will have to grow them in a way to stop the lodging (which is falling over) or they can't harvest them. plant population and fertiliser application are key. In the field, they will sort of hold each other up against strong winds, but when they start falling over (this applies to a lot of crops like wheat, barley, oilseed rape, linseed, things you harvest when the plant is dead with a combine), it is generally too much fertiliser. Most of the varieties of plants now are breed to stay standing up because they are very difficult to harvest when they go flat.A number of years ago I was travelling through central and very rural France. To the side of one of the arrow straight roads was a few fields of glorious sunflowers all standing tall and to attention. Swathes of the things and stunning to see, but not a bamboo stick in sight.
Why is it - how is it - that when I grow a cluster of the things over here i have to manufacture scaffolding to give mine a chance of not flopping over or snapping in two?
Do the cunning French mix viagra into the fertiliser or are they just naturally more virile?
I harvested a few thousand acres of 'flowers when I worked in Kansas and their smell reminds me of the good time I had there.
OpulentBob said:
opening your car window means the air running past the window is at a low pressure than the air in the car, due to Bernoulli's principle, therefore the air from inside the car rushes out, making it blustery and sucking things like fag ash, old receipts and dog's tongues out of the window.
That isnt what is happening though, if you drive down the motorway with your window open and it's raining you'll get wet.What you have is turbulence, air is being whirled around. I remember an old GF telling me how her dad had spat out of the drivers window once and it came back in the open rear one....
227bhp said:
Willy Nilly said:
Cold said:
Dear Monty Don and Gardeners' Word,
A number of years ago I was travelling through central and very rural France. To the side of one of the arrow straight roads was a few fields of glorious sunflowers all standing tall and to attention. Swathes of the things and stunning to see, but not a bamboo stick in sight.
Why is it - how is it - that when I grow a cluster of the things over here i have to manufacture scaffolding to give mine a chance of not flopping over or snapping in two?
Do the cunning French mix viagra into the fertiliser or are they just naturally more virile?
The people growing them commercially will have to grow them in a way to stop the lodging (which is falling over) or they can't harvest them. plant population and fertiliser application are key. In the field, they will sort of hold each other up against strong winds, but when they start falling over (this applies to a lot of crops like wheat, barley, oilseed rape, linseed, things you harvest when the plant is dead with a combine), it is generally too much fertiliser. Most of the varieties of plants now are breed to stay standing up because they are very difficult to harvest when they go flat.A number of years ago I was travelling through central and very rural France. To the side of one of the arrow straight roads was a few fields of glorious sunflowers all standing tall and to attention. Swathes of the things and stunning to see, but not a bamboo stick in sight.
Why is it - how is it - that when I grow a cluster of the things over here i have to manufacture scaffolding to give mine a chance of not flopping over or snapping in two?
Do the cunning French mix viagra into the fertiliser or are they just naturally more virile?
I harvested a few thousand acres of 'flowers when I worked in Kansas and their smell reminds me of the good time I had there.
Dr Jekyll said:
Theoretically there could be a problem with vitamin D. White skin is an adaption to help sufficient sunlight to get through even in coldish darkish countries for your body to make enough of the vitamin.
But how does this work when we are now covered in clothes, rather than a few bits of grass around our waist? FiF said:
If a dog which reacts when it sees other dogs walks into a room with a full length mirror, why doesn't it react when it sees itself for the first time in the mirror?
Same reason you don't. It's a mirror, it's not another dog. They understand mirrors very quickly.Having had babies of both the human and canine varieties, I'd say the puppies' interest in the mirror only lasted for 2 minutes at most, until they realised it wasn't really another dog and then they were never interested in mirrors again... The baby human has been fascinated by the baby in the mirror for the last 6 months. And will just sit there in astonishment for ages moving his head back and forth between the daddy in the mirror and the real-life daddy trying to work it out.
Willy Nilly said:
227bhp said:
Willy Nilly said:
Cold said:
Dear Monty Don and Gardeners' Word,
A number of years ago I was travelling through central and very rural France. To the side of one of the arrow straight roads was a few fields of glorious sunflowers all standing tall and to attention. Swathes of the things and stunning to see, but not a bamboo stick in sight.
Why is it - how is it - that when I grow a cluster of the things over here i have to manufacture scaffolding to give mine a chance of not flopping over or snapping in two?
Do the cunning French mix viagra into the fertiliser or are they just naturally more virile?
The people growing them commercially will have to grow them in a way to stop the lodging (which is falling over) or they can't harvest them. plant population and fertiliser application are key. In the field, they will sort of hold each other up against strong winds, but when they start falling over (this applies to a lot of crops like wheat, barley, oilseed rape, linseed, things you harvest when the plant is dead with a combine), it is generally too much fertiliser. Most of the varieties of plants now are breed to stay standing up because they are very difficult to harvest when they go flat.A number of years ago I was travelling through central and very rural France. To the side of one of the arrow straight roads was a few fields of glorious sunflowers all standing tall and to attention. Swathes of the things and stunning to see, but not a bamboo stick in sight.
Why is it - how is it - that when I grow a cluster of the things over here i have to manufacture scaffolding to give mine a chance of not flopping over or snapping in two?
Do the cunning French mix viagra into the fertiliser or are they just naturally more virile?
I harvested a few thousand acres of 'flowers when I worked in Kansas and their smell reminds me of the good time I had there.
https://search.thompson-morgan.com/seeds/Dwarf-Sun...
Willy Nilly said:
But how does this work when we are now covered in clothes, rather than a few bits of grass around our waist?
Do you really believe this is how primitive man used to look?
When we evolved to lose the thick hair all over our bodies, we started wearing animal skins and other clothes for warmth/protection.
Also, a lot of people are Vitamin D deficient in dark/wet countries.
LOADS of folk (who've come over here to steal our jobs/women) who are darker skinned and from foreign shores ate vit d deficient. Especially women who wear traditional dress and don't go out much. It can result in all sorts of medical maladies.
(Tongue in cheek comment btw)
Also a dogs reflection has no smell and that's a dogs main way of identifying things.
One relating to dogs which then contradicts the above. Why does my pooch bark at people wearing hats or who are dark skinned. I'm pretty sure dogs can't be racist??
(Tongue in cheek comment btw)
Also a dogs reflection has no smell and that's a dogs main way of identifying things.
One relating to dogs which then contradicts the above. Why does my pooch bark at people wearing hats or who are dark skinned. I'm pretty sure dogs can't be racist??
Dr Jekyll said:
Theoretically there could be a problem with vitamin D. White skin is an adaption to help sufficient sunlight to get through even in coldish darkish countries for your body to make enough of the vitamin.
My 4 year old grand daughter (who on inspection seems to be as white as the rest of the family) was recently put on Vitamin D supplement by her GP. She has always been a bit behind others of her peer group with walking and running, and even managed to break her thigh bone last year just falling over in the garden.The change has been startling. She no longer complains about the walk home from nursery school, and leaps about confidently on her trampoline (council !!). The doctor said that they see a lot of this now days because kids get covered up in sun hats, long sleeves and factor 50 when they go outside - which for many is not often anyway - and don't generate sufficient Vitamin D.
Gassing Station | The Lounge | Top of Page | What's New | My Stuff