If I jump in the air why doesn't the ground move @ 1000MPH?

I'm well aware it varies.

I don't think you are at all.

You don't seem to know the differences between air pressure at ground level or at high altitude, nor the difference inside a bus or a high-altitude aircraft.

You also appear to think that the air pressure "inside" a bus at ground level varies as the bus accelerates, independently from the air pressure "outside" the bus—despite them being one and the same physical entity.

Quote from: sceptimatic on January 08, 2014, 09:13:05 AM

I'm well aware it varies. Did they tag you?

just passing through.

I had a thought.

If you put a round object in an airtight sealed tube and place that tube on a table. If you slide the tube in one direction the round object will appear to roll in the opposite direction compared to the tube and relatively stationary compared to the table (friction and other forces mean it will be carried somewhat in the direction of the moving tube.)

What causes this effect in your theory?

If it is the air moving to the back of the tube then my question shifts to what causes the air to move

First of all your ball is on the floor, it's like a kid being on a skateboard on a bus and the bus pulling away quickly. He will naturally roll backwards just like the ball would and it's for the very same reason, it's air pressure acting on it, it's no different for anything that has a natural part to play in the atmosphere it is in. .

Quote from: sceptimatic on January 08, 2014, 09:12:22 AM

Quote from: Spank86 on January 08, 2014, 09:09:49 AM

Quote from: sceptimatic on January 08, 2014, 08:57:14 AM

I was questioning it as not being accurate and in the grand scheme of things, it isn't accurate.

Pi Is the ultimate in accuracy.

3.142 isn't accurate but then 3.142 isn't exactly Pi.

so pi is the ultimate in accuracy but pi being 3.142 isn't accurate because it's not pi. lol.
No wonder people's heads are all screwed up with mainstream science.

Pi is Pi.

Approximations of Pi include:

3
3.1
3.14
3.142

All of these are approximations of Pi but Pi represents the reality of how the two lengths relate.

Ok, so what is pi? What is it , like, what does it stand for?

Quote from: rottingroom on January 08, 2014, 09:22:16 AM

Quote from: sceptimatic on January 08, 2014, 09:20:07 AM

Quote from: rottingroom on January 08, 2014, 09:16:25 AM

Quote from: sceptimatic on January 08, 2014, 09:12:22 AM

Quote from: Spank86 on January 08, 2014, 09:09:49 AM

Quote from: sceptimatic on January 08, 2014, 08:57:14 AM

I was questioning it as not being accurate and in the grand scheme of things, it isn't accurate.

Pi Is the ultimate in accuracy.

3.142 isn't accurate but then 3.142 isn't exactly Pi.

so pi is the ultimate in accuracy but pi being 3.142 isn't accurate because it's not pi. lol.
No wonder people's heads are all screwed up with mainstream science.

Let's demonstrate your lack of knowledge. What is special about PI? Don't mention anything about circles, but simply the number, what makes it an especially interesting number?

In other words, why would 3.142 be both sort of accurate but not accurate at the same time?

Spit it out, I'm all ears.

I'm not hear to teach you. I just wanted to demonstrate that you don't know this grade school concept about pi. Point proven.

I'm pleased you aren't here to teach me, because if I were stupid enough to be taught by you, I'd be walking about with a head full of brainwashed lies.

Let's see if you can keep demonstrating your genius by putting this together. With the following info you should be able to tell me what makes pi special. 3.1425 is inaccurate right... but this number is more accurate:

3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196442881097566593344612847564823378678316527120190914564856692346034861045432664821339360726024914127372458700660631558817488152092096282925409171536436789259036001133053054882046652138414695194151160943305727036575959195309218611738193261179310511854807446237996274956735188575272489122793818301194912983367336244065664308602139494639522473719070217986094370277053921717629317675238467481846766940513200056812714526356082778577134275778960917363717872146844090122495343014654958537105079227968925892354201995611212902196086403441815981362977477130996051870721134999999837297804995105973173281609631859502445945534690830264252230825334468503526193118817101000313783875288658753320838142061717766914730359825349042875546873115956286388235378759375195778185778053217122680661300192787661119590921642019

It's still inaccurate though.

Why?

Quote from: ausGeoff on January 08, 2014, 09:25:16 AM

Quote from: sceptimatic on January 08, 2014, 09:10:33 AM

I didn't say the planes cabin pressure had less pressure than the outside air [...]

You did say that, and i quote you:  You are forgetting that the planes cabin pressure is below atmospheric pressure [...]

You either have an extremely short memory span, or you're stretching the truth.  Which is it?
 


And you did NOT say this at all:

Quote

I said it had less pressure against our atmospheric pressure we live under

Which, incidentally, is also wrong.  Can't take a win can you LOL.

Why don't you just face up to it?  You got it wrong.  Or are you that much of an intellectual coward that you can't admit to making the occasional mistake?  If you can't, then you're not much of a debater are you?

More like a masturbator.

You will find that it's you that is wrong, you dummy.

I think we can all see by now (and by the silly content of sceptimatic's last response) that the guy is just a major troll, and must be getting his rocks off laughing like the village idiot as he does so.

As his comments have deteriorated to the point of lunacy, I'm thinking it's hardly worth anybody's time responding—and hoping to get an intelligent comment in return.

Quote from: sceptimatic on January 08, 2014, 09:13:05 AM

I'm well aware it varies.

I don't think you are at all.

You don't seem to know the differences between air pressure at ground level or at high altitude, nor the difference inside a bus or a high-altitude aircraft.

You also appear to think that the air pressure "inside" a bus at ground level varies as the bus accelerates, independently from the air pressure "outside" the bus—despite them being one and the same physical entity.

It,s not me who doesn't understand, it's you, seriously. You have no clue, except to spout off that you do.

Quote from: sceptimatic on January 08, 2014, 09:27:15 AM

Quote from: rottingroom on January 08, 2014, 09:22:16 AM

Quote from: sceptimatic on January 08, 2014, 09:20:07 AM

Quote from: rottingroom on January 08, 2014, 09:16:25 AM

Quote from: sceptimatic on January 08, 2014, 09:12:22 AM

Quote from: Spank86 on January 08, 2014, 09:09:49 AM

Quote from: sceptimatic on January 08, 2014, 08:57:14 AM

I was questioning it as not being accurate and in the grand scheme of things, it isn't accurate.

Pi Is the ultimate in accuracy.

3.142 isn't accurate but then 3.142 isn't exactly Pi.

so pi is the ultimate in accuracy but pi being 3.142 isn't accurate because it's not pi. lol.
No wonder people's heads are all screwed up with mainstream science.

Let's demonstrate your lack of knowledge. What is special about PI? Don't mention anything about circles, but simply the number, what makes it an especially interesting number?

In other words, why would 3.142 be both sort of accurate but not accurate at the same time?

Spit it out, I'm all ears.

I'm not hear to teach you. I just wanted to demonstrate that you don't know this grade school concept about pi. Point proven.

I'm pleased you aren't here to teach me, because if I were stupid enough to be taught by you, I'd be walking about with a head full of brainwashed lies.

Let's see if you can keep demonstrating your genius by putting this together. With the following info you should be able to tell me what make pi special. 3.1425 is innacurate right but this number is more accurate:

3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196442881097566593344612847564823378678316527120190914564856692346034861045432664821339360726024914127372458700660631558817488152092096282925409171536436789259036001133053054882046652138414695194151160943305727036575959195309218611738193261179310511854807446237996274956735188575272489122793818301194912983367336244065664308602139494639522473719070217986094370277053921717629317675238467481846766940513200056812714526356082778577134275778960917363717872146844090122495343014654958537105079227968925892354201995611212902196086403441815981362977477130996051870721134999999837297804995105973173281609631859502445945534690830264252230825334468503526193118817101000313783875288658753320838142061717766914730359825349042875546873115956286388235378759375195778185778053217122680661300192787661119590921642019

It's still inaccurate though.

Why?

Slip a few more numbers on the end and let me stand back and look and I'll let you know.
No wonder this world is so fu...so....fu....no wonder the people of this world are so bamboozled. 

First of all your ball is on the floor, it's like a kid being on a skateboard on a bus and the bus pulling away quickly. He will naturally roll backwards just like the ball would and it's for the very same reason, it's air pressure acting on it, it's no different for anything that has a natural part to play in the atmosphere it is in. .

okay. so what causes the air to push him back.

What causes the air to move relative to the bus, or what causes the air to remain stationary relative to an external (earth) frame of reference?

Ok, so what is pi? What is it , like, what does it stand for?

It stands for the exact relationship between the circumference and diameter in any circle.

Quote from: sceptimatic on January 08, 2014, 09:28:17 AM

Quote from: ausGeoff on January 08, 2014, 09:25:16 AM

Quote from: sceptimatic on January 08, 2014, 09:10:33 AM

I didn't say the planes cabin pressure had less pressure than the outside air [...]

You did say that, and i quote you:  You are forgetting that the planes cabin pressure is below atmospheric pressure [...]

You either have an extremely short memory span, or you're stretching the truth.  Which is it?
 


And you did NOT say this at all:

Quote

I said it had less pressure against our atmospheric pressure we live under

Which, incidentally, is also wrong.  Can't take a win can you LOL.

Why don't you just face up to it?  You got it wrong.  Or are you that much of an intellectual coward that you can't admit to making the occasional mistake?  If you can't, then you're not much of a debater are you?

More like a masturbator.

You will find that it's you that is wrong, you dummy.

I think we can all see by now (and by the silly content of sceptimatic's last response) that the guy is just a major troll, and must be getting his rocks off laughing like the village idiot as he does so.

As his comments have deteriorated to the point of lunacy, I'm thinking it's hardly worth anybody's time responding—and hoping to get an intelligent comment in return.

You allegedly put me on ignore a few days ago and yet here you are crying that I'm a troll and threatening not to be my talking friend. Hahahaha. Go away kid or debate like a man and see what you get back in return, because acting like a kid, I'll treat you like one.

Quote from: rottingroom on January 08, 2014, 09:35:55 AM

Quote from: sceptimatic on January 08, 2014, 09:27:15 AM

Quote from: rottingroom on January 08, 2014, 09:22:16 AM

Quote from: sceptimatic on January 08, 2014, 09:20:07 AM

Quote from: rottingroom on January 08, 2014, 09:16:25 AM

Quote from: sceptimatic on January 08, 2014, 09:12:22 AM

Quote from: Spank86 on January 08, 2014, 09:09:49 AM

Quote from: sceptimatic on January 08, 2014, 08:57:14 AM

I was questioning it as not being accurate and in the grand scheme of things, it isn't accurate.

Pi Is the ultimate in accuracy.

3.142 isn't accurate but then 3.142 isn't exactly Pi.

so pi is the ultimate in accuracy but pi being 3.142 isn't accurate because it's not pi. lol.
No wonder people's heads are all screwed up with mainstream science.

Let's demonstrate your lack of knowledge. What is special about PI? Don't mention anything about circles, but simply the number, what makes it an especially interesting number?

In other words, why would 3.142 be both sort of accurate but not accurate at the same time?

Spit it out, I'm all ears.

I'm not hear to teach you. I just wanted to demonstrate that you don't know this grade school concept about pi. Point proven.

I'm pleased you aren't here to teach me, because if I were stupid enough to be taught by you, I'd be walking about with a head full of brainwashed lies.

Let's see if you can keep demonstrating your genius by putting this together. With the following info you should be able to tell me what make pi special. 3.1425 is innacurate right but this number is more accurate:

3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196442881097566593344612847564823378678316527120190914564856692346034861045432664821339360726024914127372458700660631558817488152092096282925409171536436789259036001133053054882046652138414695194151160943305727036575959195309218611738193261179310511854807446237996274956735188575272489122793818301194912983367336244065664308602139494639522473719070217986094370277053921717629317675238467481846766940513200056812714526356082778577134275778960917363717872146844090122495343014654958537105079227968925892354201995611212902196086403441815981362977477130996051870721134999999837297804995105973173281609631859502445945534690830264252230825334468503526193118817101000313783875288658753320838142061717766914730359825349042875546873115956286388235378759375195778185778053217122680661300192787661119590921642019

It's still inaccurate though.

Why?

Slip a few more numbers on the end and let me stand back and look and I'll let you know.
No wonder this world is so fu...so....fu....no wonder the people of this world are so bamboozled. 

Thank you for hitting the point I'm making home even further. With the information I've provided, you didn't even need the knowledge about this subject beforehand to at least ponder a guess at what makes pi special. A child with no knowledge of pi and learning about it right now for the first time is likely to at least guess what is going on here.

Still you have nothing. I mean, seriously, can you be any more stupid?

I will admit that sceptimatic is often asked by RE'ers to be banned.

Response relocated to "Concerns" by ausGeoff.

okay. so what causes the air to push him back.

What causes the air to move relative to the bus, or what causes the air to remain stationary relative to an external (earth) frame of reference?

I spent ages explaining this, not too many pages back.
he air inside the bus is moving with the bus, because it's part of the bus as are the people on it , plus seats.
Once that bus moves off and accelerates, it unbalances the air inside of it and compresses/pushes that air to the back but not as in, all of the air just rushes to the back leaving none at the front. It's simply immediate compression but it leaves a LOW pressure at the front of the bus, not as in 5 feet deep or anything, just a quick low pressure that fills as the bus picks up speed. It's all happening super quickly.
Remember...air is dense at sea level and stuck together so it's like having a large sponge pushing against you.
At first with the bus slowly accelerating...that sponge will be nothing to you but if it went super fast...then that sponge would be compressing against your face until the faster you accelerate....your face would be imprinting itself into the sponge and in doing so, it will start to stretch your face.

Can you understand what I'm getting at or do you want to take the stance of the other two?

Ok, so what is pi? What is it , like, what does it stand for?

It stands for the exact relationship between the circumference and diameter in any circle.
[/quote] I mean, what does the p and the i, stand for?

Quote from: jroa on January 08, 2014, 08:45:09 AM

I will admit that sceptimatic is often asked by RE'ers to be banned.

Bearing in mind that sceptimatic repeatedly breaks all the FAQs, and terms and conditions of posting here, is there any particular reason he hasn't been banned?

Especially considering the dozens of zero content and off-topic comments he posts.  Plus repeatedly insulting other members and trying to incite flame-wars.

I'd be interested to hear a moderator's viewpoint of sceptimatic's behaviour as it relates the the aims of the site overall—that is, to promote an intelligent discussion about the possibility for a flat earth model being correct, or the round earth model being untenable.

I enjoy a heated debate as much as the next guy, but in sceptimatic's case it's really like arguing with a stubborn schoolkid—seriously.  And it's annoying for anybody looking for a good debate, and possibly lowers the "tone" of the entire site—particularly visitors having a quick look-see.

—Cheers.

I've been wondering the same thing. I think the FES has disowned sceptimatic, but why haven't they banned him ? Banning seems to be one of the favorite tactics of the FES. Sceptimatic's continued lunacy certainly doesn't add any credence to this forum and it makes the FES look bad IMHO....."If all FE's are like sceptimatic, it's no wonder we believe they are just a bit of looneys and maybe we're right.....The FES forum is just a big joke and a big hoax." Cheers and LOL.

Quote from: jroa on January 08, 2014, 08:45:09 AM

I will admit that sceptimatic is often asked by RE'ers to be banned.

Bearing in mind that sceptimatic repeatedly breaks all the FAQs, and terms and conditions of posting here, is there any particular reason he hasn't been banned?

Especially considering the dozens of zero content and off-topic comments he posts.  Plus repeatedly insulting other members and trying to incite flame-wars.

I'd be interested to hear a moderator's viewpoint of sceptimatic's behaviour as it relates the the aims of the site overall—that is, to promote an intelligent discussion about the possibility for a flat earth model being correct, or the round earth model being untenable.

I enjoy a heated debate as much as the next guy, but in sceptimatic's case it's really like arguing with a stubborn schoolkid—seriously.  And it's annoying for anybody looking for a good debate, and possibly lowers the "tone" of the entire site—particularly visitors having a quick look-see.

—Cheers.

At the top of the forum there is a suggestions and CONCERNS. Put your banning order to them in there and they may act on it and ban me and allow you lot to carry on and attempt your silly intimidation techniques to others, because you lot are angels and are comfortable and strong when you're a tag team...BUT...not quite strong enough against the scepti it seems.
In your favour is the dislike for me by the flat earth theorists, so I suggest you don't derail this anymore than all of us have derailed it and ask them nicely to ban me. If I'm found to be worthy of it, I will accept that.
Off you pop then.

Quote from: ausGeoff on January 08, 2014, 09:46:33 AM

Quote from: jroa on January 08, 2014, 08:45:09 AM

I will admit that sceptimatic is often asked by RE'ers to be banned.

Bearing in mind that sceptimatic repeatedly breaks all the FAQs, and terms and conditions of posting here, is there any particular reason he hasn't been banned?

Especially considering the dozens of zero content and off-topic comments he posts.  Plus repeatedly insulting other members and trying to incite flame-wars.

I'd be interested to hear a moderator's viewpoint of sceptimatic's behaviour as it relates the the aims of the site overall—that is, to promote an intelligent discussion about the possibility for a flat earth model being correct, or the round earth model being untenable.

I enjoy a heated debate as much as the next guy, but in sceptimatic's case it's really like arguing with a stubborn schoolkid—seriously.  And it's annoying for anybody looking for a good debate, and possibly lowers the "tone" of the entire site—particularly visitors having a quick look-see.

—Cheers.

I've been wondering the same thing. I think the FES has disowned sceptimatic, but why haven't they banned him ? Banning seems to be one of the favorite tactics of the FES. Sceptimatic's continued lunacy certainly doesn't add any credence to this forum and it makes the FES look bad IMHO....."If all FE's are like sceptimatic, it's no wonder we believe they are just a bit of looneys and maybe we're right.....The FES forum is just a big joke and a big hoax." Cheers and LOL.

Suggestions and concerns. Take it up in there, kid.

At the top of the forum there is a suggestions and CONCERNS.

Thanks.  I didn't realise that the "concerns" referred to reporting individual members.

Advice noted and acted upon.

Quote from: sceptimatic on January 08, 2014, 09:59:53 AM

At the top of the forum there is a suggestions and CONCERNS.

Thanks.  I didn't realise that the "concerns" referred to reporting individual members.

Advice noted and acted upon.

Good for you. It saves this topic from straying all over.

Quote from: Spank86 on January 08, 2014, 09:41:04 AM

okay. so what causes the air to push him back.

What causes the air to move relative to the bus, or what causes the air to remain stationary relative to an external (earth) frame of reference?

I spent ages explaining this, not too many pages back.
he air inside the bus is moving with the bus, because it's part of the bus as are the people on it , plus seats.
Once that bus moves off and accelerates, it unbalances the air inside of it and compresses/pushes that air to the back but not as in, all of the air just rushes to the back leaving none at the front. It's simply immediate compression but it leaves a LOW pressure at the front of the bus, not as in 5 feet deep or anything, just a quick low pressure that fills as the bus picks up speed. It's all happening super quickly.
Remember...air is dense at sea level and stuck together so it's like having a large sponge pushing against you.
At first with the bus slowly accelerating...that sponge will be nothing to you but if it went super fast...then that sponge would be compressing against your face until the faster you accelerate....your face would be imprinting itself into the sponge and in doing so, it will start to stretch your face.

Can you understand what I'm getting at or do you want to take the stance of the other two?

Quote from: sceptimatic on January 08, 2014, 09:35:31 AM

Ok, so what is pi? What is it , like, what does it stand for?

It stands for the exact relationship between the circumference and diameter in any circle.

I mean, what does the p and the i, stand for?
[/quote]

Elementary my dear sceptimatic !

To answer your question. The p and the i stand for the Greek Letter "Pi" - Which is pronounced "Pie",as in apple or cherry. (I don't have Greek Letters on my keboard) which is the symbol for 3.14159............... You know Alpha, Beta, etc (that's where we get the word "Alphabet.") Pi is just a symbol - It's a lot easier to write "2 Pi" instead of "2 times 3.14159.........................................................." So much for the Elementary School Class session. Do you understand that or do you need some more information on what p and i stand for ?
If so, I am going to have to hand this off to someone more learned than I . Now I know you're just a troll.

http://gogreece.about.com/od/greeklanguage2/ss/greekalphabet_9.htm

http://en.wikipedia.org/wiki/Pi

Spank:
Put some thick custard of something similar on your face and go for a drive and accelerate faster and faster along a straight road and see what happens to the custard. You will find that it starts to spread all over  and around your face.
Now do the same thing again but this time on a calm day, outside of the car and go for a sprint and see what happens to the custard.
The only difference between the two is that in the car, the air is compressed against the back window. It cannot escape and that's why you do not feel it as a breeze.
Outside...you have the air hitting you in the face but your face is deflecting it behind you and it's immediately equalizing  behind you as it does so.

Elementary my dear sceptimatic !

To answer your question. The p and the i stand for the Greek Letter "Pi" - Which is pronounced "Pie",as in apple or cherry. (I don't have Greek Letters on my keboard) which is the symbol for 3.14159............... You know Alpha, Beta, etc (that's where we get the word "Alphabet.") Pi is just a symbol - It's a lot easier to write "2 Pi" instead of "2 times 3.14159.........................................................." So much for the Elementary School Class session. Do you understand that or do you need some more information on what p and i stand for ?
If so, I am going to have to hand this off to someone more learned than I . Now I know you're just a troll.

http://gogreece.about.com/od/greeklanguage2/ss/greekalphabet_9.htm

Pi is just the name of the Greek letter used in the mathematical equation. It has little more significance than "delta" -- another Greek letter -- being the shorthand for the difference between two numbers, or the capital Sigma being the sum of a series of numbers. But the mathematical folks had to call it something and since the Greeks left us a lot of mathematical (and geometric) information to work with, the letters they used persist even today.

Quote from: sceptimatic on January 08, 2014, 09:53:59 AM

Quote from: Spank86 on January 08, 2014, 09:41:04 AM

okay. so what causes the air to push him back.

What causes the air to move relative to the bus, or what causes the air to remain stationary relative to an external (earth) frame of reference?

I spent ages explaining this, not too many pages back.
he air inside the bus is moving with the bus, because it's part of the bus as are the people on it , plus seats.
Once that bus moves off and accelerates, it unbalances the air inside of it and compresses/pushes that air to the back but not as in, all of the air just rushes to the back leaving none at the front. It's simply immediate compression but it leaves a LOW pressure at the front of the bus, not as in 5 feet deep or anything, just a quick low pressure that fills as the bus picks up speed. It's all happening super quickly.
Remember...air is dense at sea level and stuck together so it's like having a large sponge pushing against you.
At first with the bus slowly accelerating...that sponge will be nothing to you but if it went super fast...then that sponge would be compressing against your face until the faster you accelerate....your face would be imprinting itself into the sponge and in doing so, it will start to stretch your face.

Can you understand what I'm getting at or do you want to take the stance of the other two?

Quote from: sceptimatic on January 08, 2014, 09:35:31 AM

Ok, so what is pi? What is it , like, what does it stand for?

It stands for the exact relationship between the circumference and diameter in any circle.

I mean, what does the p and the i, stand for?

Elementary my dear sceptimatic !

To answer your question. The p and the i stand for the Greek Letter "Pi" - Which is pronounced "Pie",as in apple or cherry. (I don't have Greek Letters on my keboard) which is the symbol for 3.14159............... You know Alpha, Beta, etc (that's where we get the word "Alphabet.") Pi is just a symbol - It's a lot easier to write "2 Pi" instead of "2 times 3.14159.........................................................." So much for the Elementary School Class session. Do you understand that or do you need some more information on what p and i stand for ?
If so, I am going to have to hand this off to someone more learned than I . Now I know you're just a troll.
[/quote] So it's just an apple pie, basically.
So some Greek baked an apple pie and made it perfectly round and decided that this pie is 2 times 3.14159. Yeah, it all makes sense now.
Science is basically defined as a load of pie.

I know that "science" is a word that is taboo in sceptimatic's vocabulary, but we use a lot of Greek symbols in all kinds of science in the real world.
For instance, we use the Greek Letter "Omega" for Ohms, which is the unit of resistance in an electrical circuit.

But I suppose this is all Greek to sceptimatic. 

Yes, it makes you wonder why we do use them. I mean, why do we use the English language. Why don't we just use Greek language.
Maybe it's because stuff like PIE doesn't look very scientific so change it to pi and there you have it. Bright sparks.

I spent ages explaining this, not too many pages back.
he air inside the bus is moving with the bus, because it's part of the bus as are the people on it , plus seats.
Once that bus moves off and accelerates, it unbalances the air inside of it and compresses/pushes that air to the back but not as in, all of the air just rushes to the back leaving none at the front. It's simply immediate compression but it leaves a LOW pressure at the front of the bus, not as in 5 feet deep or anything, just a quick low pressure that fills as the bus picks up speed. It's all happening super quickly.
Remember...air is dense at sea level and stuck together so it's like having a large sponge pushing against you.

sure. but WHY does the air do this when the bus moves off? Why doesn't the air at the front of the bus simply move with the rest of the bus, why does it push against the air behind it?

Can you understand what I'm getting at or do you want to take the stance of the other two?

I'm starting to see what you're saying. Lets just deal with the air itself no other objects in the bus.

I mean, what does the p and the i, stand for?

Pi is a greek letter (that should actually look a little bit like one of the arches in Stonehenge) used to represent the relationship which cannot be done with a rational number.

Yes, it makes you wonder why we do use them. I mean, why do we use the English language. Why don't we just use Greek language.
Maybe it's because stuff like PIE doesn't look very scientific so change it to pi and there you have it. Bright sparks.

We use arabic numerals and the latin alphabet.

Pi is just an easy shorthand.

sure. but WHY does the air do this when the bus moves off? Why doesn't the air at the front of the bus simply move with the rest of the bus, why does it push against the air behind it?

Ok, the air inside the bus while the bus is at rest, is balanced inside that bus. It's under agitation but only due to downward force plus temperature. Basically think of it like a TV that's lost signal and fills the screen with speckles.
So for the sake of it, we will call this at rest with the stationary bus.
Now, because air friction is no match for a heavy bus, when the bus accelerates...the air cannot just simply follow it, it gets left behind but only so far as compressing itself towards the back of the bus with the back being closed off.
The front of the bus is then at a lower pressure and is immediately filled by incoming air, as long as the bus is accelerating.
If the bus stops accelerating and goes at a constant speed...then the air decompresses and you would feel a mild push on your back as it decelerated to take on a constant speed and once at that speed, the air would be balanced again.

The faster you go, the more compression there is against your body.

Ok, the air inside the bus while the bus is at rest, is balanced inside that bus. It's under agitation but only due to downward force plus temperature. Basically think of it like a TV that's lost signal and fills the screen with speckles.
So for the sake of it, we will call this at rest with the stationary bus.

Now, because air friction is no match for a heavy bus, when the bus accelerates...the air cannot just simply follow it, it gets left behind but only so far as compressing itself towards the back of the bus with the back being closed off.
The front of the bus is then at a lower pressure and is immediately filled by incoming air, as long as the bus is accelerating.
If the bus stops accelerating and goes at a constant speed...then the air decompresses and you would feel a mild push on your back as it decelerated to take on a constant speed and once at that speed, the air would be balanced again.

The faster you go, the more compression there is against your body.

I'm afraid your explanation—as you see it—is totally wrong on all accounts.  Sorry.

The air inside the bus has NOTHING to do with your body sensing acceleration or deceleration, or centrifugal force of centripetal force.  The air pressure "inside" the bus is exactly the same as the air pressure "outside" the bus.  The only places in the vicinity of the bus that may experience a change in air pressure are due to the aerodynamic effects on the outside of the bus—due to its passage through the air.  This is most notable immediately behind and adjacent to the back of the bus.  Hence we have "slipstreaming" which many cyclists take advantage of behind large vehicles.

The feeling that a passenger gets of being pushed backwards, or pulled forward are due to inertia and momentum respectively.  Neither has anything to do with air pressure.  And both apply in a vacuum as well.

Sceptipoo, a question- I have two Steel balls. One is solid and half a meter in diameter. One is hollow and one meter in diameter. The hollow one is completely airtight, and has a 1 centimeter thick outer shell.

Which of these two steel balls takes more effort to get moving?

I have two Steel balls.

My advice?  See your doctor ASAP.

(Sorry, couldn't resist LOL)

Sceptipoo, a question- I have two Steel balls. One is solid and half a meter in diameter. One is hollow and one meter in diameter. The hollow one is completely airtight, and has a 1 centimeter thick outer shell.

Which of these two steel balls takes more effort to get moving?

The solid half a metre ball would take a lot more energy to get it into motion than the larger airtight ball due to it having more density against the ground.

Ok, the air inside the bus while the bus is at rest, is balanced inside that bus. It's under agitation but only due to downward force plus temperature. Basically think of it like a TV that's lost signal and fills the screen with speckles.
So for the sake of it, we will call this at rest with the stationary bus.
Now, because air friction is no match for a heavy bus, when the bus accelerates...the air cannot just simply follow it, it gets left behind but only so far as compressing itself towards the back of the bus with the back being closed off.

Ok, so the air doesn't automatically move with the front of the bus but stays still until the air behind it pushes on it forcing it move and accelerate to the same speed as the bus.

So essentially what you are saying is that the air is stationary until a force acts upon it and will keep moving at the speed of the bus until another force acts upon it (the front of the bus) thus slowing it down.

If I can simplify that for a second to a few statements just to be clear on what you're saying?

1. Air at rest will remain at rest unless an external force (eg the back of the bus) acts upon it?

2. Air moving will continue moving unless an external force acts upon it (the front of the bus).

3. the more mass the air in the bus has (say, the bigger the bus) the more effort is required for the bus to move forward compressing it (ignoring the air outside for sake of simplicity)?