Air Pressure vs Gravity

Quote from: TheRealBillNye on December 23, 2016, 11:04:59 PM

Haha OK friend. Try telling Scepti that inertia exists.

sceptimatic isn't the only, or even original, adherent of this "denpressure" concept.

Sure, but Sceppy has his own personal brand of denpressure that defies all logical thinking. In reality, inertia is a simple property of matter. Sceppy cannot grasp this concept, therefore he belongs in his own separate loony bin.

I too am a bit confused over the whole denpressure thing, for one how does it get around the classic musket and cannonball experiment? Just to remind you dropping two onjects of differing sizes and masses at exactly the same time to see them hit the ground at the same instant.
I remember doing a similar experiment in physics classes when I was at school to calculate the force of gravity.

What experiments have you, Skepti, performed to prove denpressure and disprove gravity. If you post them we could have a go.

dropping two onjects of differing sizes and masses at exactly the same time to see them hit the ground at the same instant.
I remember doing a similar experiment in physics classes when I was at school to calculate the force of gravity.

Do you honestly think that this middle school experiment was capable of measuring and accounting for any possible margin of error?

Quote from: Lonegranger on December 24, 2016, 04:03:55 AM

dropping two onjects of differing sizes and masses at exactly the same time to see them hit the ground at the same instant.
I remember doing a similar experiment in physics classes when I was at school to calculate the force of gravity.

Do you honestly think that this middle school experiment was capable of measuring and accounting for any possible margin of error?

Who said anything about middle school? How can you make such a comment when you know nothing about how our experiment was conducted and the conditions under which it was done.

Quote from: Lonegranger on December 24, 2016, 04:03:55 AM

dropping two onjects of differing sizes and masses at exactly the same time to see them hit the ground at the same instant.
I remember doing a similar experiment in physics classes when I was at school to calculate the force of gravity.

Do you honestly think that this middle school experiment was capable of measuring and accounting for any possible margin of error?

If you could outline for all the readers here an experiment we could carry out to prove denpressure, that would be great....I await with great anticipation.

Can anyone prove what gravity is?

Can anyone prove what gravity is?

Can any disprove gravity and offer some experimental evidence for den pressure?.....come on guys you know you can do it!

Quote from: sceptimatic on December 24, 2016, 05:23:06 AM

Can anyone prove what gravity is?

Can any disprove gravity and offer some experimental evidence for den pressure?.....come on guys you know you can do it!

Come on, tell me what gravity is. You dismiss everything else so let's see your explanation of gravity. I'll grill you on it all and let's see your answers.
You're in the lucky boat because you have a whole internet and global back up of people.
So let's start off slowly and get to the gist of it.
What is gravity and how can we be sure it is what we are told?

How can you make such a comment when you know nothing about how our experiment was conducted and the conditions under which it was done.

I know, for a fact, that your shitty experiment wasn't capable of measuring and accounting for any possible margin of error.

Are you telling me you conducted this experiment after middle school..?

Quote from: Lonegranger on December 24, 2016, 05:04:22 AM

How can you make such a comment when you know nothing about how our experiment was conducted and the conditions under which it was done.

I know, for a fact, that your shitty experiment wasn't capable of measuring and accounting for any possible margin of error.

Are you telling me you conducted this experiment after middle school..?

Ah so you're one of these other nasty little dipshits who creep about and make snide comments.

Quote from: Lonegranger on December 24, 2016, 05:04:22 AM

How can you make such a comment when you know nothing about how our experiment was conducted and the conditions under which it was done.

I know, for a fact, that your shitty experiment wasn't capable of measuring and accounting for any possible margin of error.

Are you telling me you conducted this experiment after middle school..?

Is it possible for you to contribute something positive to this discussion, or does being a little jerk head prevent this from happening.....so come on be positive and tell how you would disprove Newton...give us some idea....describe an experiment YOU carried out.
We all await....

Lonegranger, did your experiment measure and account for any possible margin of error?

A yes or no answer will do, thanks.

Lonegranger, did your experiment measure and account for any possible margin of error?

A yes or no answer will do, thanks.

No no.....let's talk about your experiment that YOU did to disprove gravity, I'm really interested. Everyone knows about gravity and you come over as such an expert so please share....tick tock...

let's talk about your experiment that YOU did to disprove gravity...

Hmm? I'm neither a denpressure ideologue, nor am I set out to "disprove gravity."

Did your experiment measure and account for any possible margin of error? Again, a yes or no answer will do, ma'am.

Quote from: Lonegranger on December 24, 2016, 05:47:37 AM

let's talk about your experiment that YOU did to disprove gravity...

Hmm? I'm neither a denpressure ideologue, nor am I set out to "disprove gravity."

Did your experiment measure and account for any possible margin of error? Again, a yes or no answer will do, ma'am.

It was an experiment so of course it did..that should be a taken.....so what are you and why so interested in an experiment done in high school that was carried out over 40 years ago that confirmed g?

It was an experiment so of course it did

You do realize that there being even the slightest margin of error in this experiment totally confounds the results and therefore renders them practically useless as evidence in support of any theories regarding gravity, yes?

Hopefully that wasn't too verbose...

Quote from: Lonegranger on December 24, 2016, 05:56:01 AM

It was an experiment so of course it did

You do realize that there being even the slightest margin of error in this experiment totally confounds the results and therefore renders them practically useless as evidence in support of any theories regarding gravity, yes?

Hopefully that wasn't too verbose...

No.

No.

Then you believe dropping two objects at approximately-level heights and observing them seemingly land at approximately the same moment, knowing full well that the margin of error here is huge, says anything definite about gravity?

Where did you go to school?

Can anyone prove what gravity is?

Cavendish Experiment.

This experiment has already been described to you. You either don't understand it or you are intentionally being obtuse.

Quote from: sceptimatic on December 24, 2016, 05:23:06 AM

Can anyone prove what gravity is?

Cavendish Experiment.

This experiment has already been described to you. You either don't understand it or you are intentionally being obtuse.

Seriously, tell me how this proves gravity?

It proves mass attracts mass.

The suspended lead balls exert measurable gravitational energy upon one another.

How can you possibly be this dense? The video explains everything plainly and clearly.

It proves mass attracts mass.

The suspended lead balls exert measurable gravitational energy upon one another.

How can you possibly be this dense? The video explains everything plainly and clearly.

Of course the video explains something. Apparently it's gravity but why can't it be replicated?
I bet you're going to tell me that it's easy to rig one up, right?
Don't come back at me with such frigging rubbish.
The Cavendish experiment. 

Perhaps some actual constructive argument as to why you don't think the cavendish experiment is evidence for gravity as opposed to an eye roll....

Quote from: TheRealBillNye on December 24, 2016, 10:54:54 AM

It proves mass attracts mass.

The suspended lead balls exert measurable gravitational energy upon one another.

How can you possibly be this dense? The video explains everything plainly and clearly.

Of course the video explains something. Apparently it's gravity but why can't it be replicated?
I bet you're going to tell me that it's easy to rig one up, right?
Don't come back at me with such frigging rubbish.
The Cavendish experiment. 

You ask "but why can't it be replicated?" To keep it short I'll just give links, but I could give you a list of the results of over 50 experiments.
Well take a peek at:
          Wikipedia, History of measurement
          Improved Determination of G Using Two Methods, abstract only
Precision measurement of the Newtonian gravitational constant using cold atoms, Nature 510, 518–521 (26 June 2014)
And still there are questions:
           Puzzling Measurement of "Big G" Gravitational Constant Ignites Debate
          Nature, Don't stop the quest to measure Big G, Terry Quinn, 22 January 2014

Just the abstract:
          A new precise determination of Newton's gravitational constant, W Michaelis, H Haars and R Augustin[/size] [/url]

And some raise questions, but still don't doubt its reality:
          Experimental evidence that the gravitational constant varies with orientation.
          Why do measurements of the gravitational constant vary so much? April 21, 2015 by Lisa Zyga

 Just descriptive:
          Measuring the Universal Gravitational Constant, G

You could always look at these earlier posts:
          Flat Earth General / Re: Wow. « Message by rabinoz on December 18, 2015, 09:52:01 AM »
         
         
And you ask " why can't it be replicated?  "  Take off the dark glasses!

<< changed pic source >>

Quote from: TheRealBillNye on December 24, 2016, 10:54:54 AM

It proves mass attracts mass.

The suspended lead balls exert measurable gravitational energy upon one another.

How can you possibly be this dense? The video explains everything plainly and clearly.

Of course the video explains something. Apparently it's gravity but why can't it be replicated?
I bet you're going to tell me that it's easy to rig one up, right?
Don't come back at me with such frigging rubbish.
The Cavendish experiment. 

Keep shutting your eyes to reality, Scepti. The Cavendish experiment has been replicated many times. If you had taken 10 seconds to verify this fact you could have prevented yourself from looking so foolish.

On the other hand, what repeatable experiments have you done to verify your thinking?

Oh, still only dealing with thought experiments?

It is laughable how right you think you are.

Quote from: Lonegranger on December 24, 2016, 06:04:42 AM

No.

Then you believe dropping two objects at approximately-level heights and observing them seemingly land at approximately the same moment, knowing full well that the margin of error here is huge, says anything definite about gravity?

Where did you go to school?

No approximates involved...two steel balls of differing sizes and masses, released by an electromagnet that started dual timers with the balls falling through a vacuum ( a plastic construction that was evacuated) then hitting plates at the base that activated two farther switches stopping said timers. Pretty simple.

Lonegranger, did your experiment measure and account for any possible margin of error?

A yes or no answer will do, thanks.

Ever thought that a change of name might be in order? "Pain in the Neck" sounds appropriate.

Raise your hand if you've done the cavendish experiment! (No hand rise) hmmm. Maybe if gravity was more readily testable in a way other than building a giant machine with twisted cables, this thread wouldnt exist.

I put a scale in a vacuum desiccator and saw no change in weight.

Here's a pretty simple experiment to prove air pressure is NOT what keeps us down.
Use a large sheet (9 X 12) of the Super thin plastic sheeting, like the stuff used when painting to cover furniture, carpet, etc. Get the thinnest you can find. Now, drape that evenly over your head, and allow the excess to fall around you. Note that the miles of stacked atmosphere above is NOT squeezing the ultra thin plastic wrap around you. If it's not strong enough to squeeze around you tightly, then how can it possibly hold you down?
If you were to stretch the same plastic wrap over the top of the surface of the water in a swimming pool, then jump into the water directly in the center of the plastic, what would happen? We all know what happens, it squeezes all the way around you.
Now, this squeezing in the water is the same squeezing Scepti says the air pressure is supposed to do to keep you down.
Simple experiment debunking denspressure.