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reply to post by turbonium1
choos
you are confused.. expands does not equal inflate.. how many times must i tell you this.. an atmosphere will inflate the bag and in the video the bag DOES NOT INFLATE
no wind or no draught will still cause the bag to inflate.. the bag does not inflate.. if there were any atmosphere the bag would have inflated alot more than what you see.
Why would it have to inflate a lot more?
I can throw a bag in air, and get the very same result. A bag with the same degree of expansion as the Apollo bag.
There's no support for your claim
Soylent Green Is People
Centrifugal force (the centrifugal effect) is NOT dependent on the gravitational pull of a body (such as the Earth or Moon), and centrifugal force DOES exist without a body produicng a gravitational pull.
For example, centrifugal force could be the effect used to create artificial gravity on deep space missions by spinning the spacecraft. The centrifugal effect would cause objects inside the spaceship to be forced outward (much like an amusement park "tilt-a-whirl" ride), generating artificial gravity. However, this can be done in deep space in the absence of a nearby gravity-producing body.
Gibborium
reply to post by turbonium1
choos
you are confused.. expands does not equal inflate.. how many times must i tell you this.. an atmosphere will inflate the bag and in the video the bag DOES NOT INFLATE
no wind or no draught will still cause the bag to inflate.. the bag does not inflate.. if there were any atmosphere the bag would have inflated alot more than what you see.
Why would it have to inflate a lot more?
I can throw a bag in air, and get the very same result. A bag with the same degree of expansion as the Apollo bag.
There's no support for your claim
In everyday talk, we say things fall because the Earth's gravity pulls on them. We talk as if our weight was a "given". Actually, weight changes when the pull of gravity changes. The Moon is much smaller and the pull of gravity on the Moon is about 1/6th that of Earth. So any object on the Moon weighs 1/6th of its weight on Earth. What does not change is the amount of matter in an object. That is called its mass. On Earth, mass and weight are the same, for practical purposes. The trip to the Moon shows they are not really the same.
From this we learn two things.
1. The weight of an object is variable; its mass is constant.
2. the pull of gravity varies according to the mass of an object. The Earth pulls more strongly than the Moon. A person also exerts a gravitational pull, but it is so tiny it is ignored for all practical purposes.
The Earth has mass. Every particle of matter has mass. So the Earth pulls on every object and person and they pull on the Earth. Gravity pulls on the mass and gives it weight.
Highlights by Me for clarity
reply to post by turbonium1
You don't get it.
A centrifugal force can exist within a spacecraft, yes.
As you said - an artifical gravity can be created by spinning the spacecraft.
So centrifugal force requires gravity. As I told you.
I didn't say it was only possible from the gravity of planets, now did I? No, I did not.
I said centrifugal force requires a gravity environment.
My point is made.
Gibborium
reply to post by turbonium1
I think you are a bit confused concerning the difference between gravity, mass and inertia. So let's define their meaning first:
Definition of gravity
1. The force of attraction that moves or tends to move bodies towards the center of a celestial body, such as the earth or moon
2. The property of being heavy or having weight See also specific gravity, center of gravity
3. Another name for gravitation
Wiki
In everyday talk, we say things fall because the Earth's gravity pulls on them. We talk as if our weight was a "given". Actually, weight changes when the pull of gravity changes. The Moon is much smaller and the pull of gravity on the Moon is about 1/6th that of Earth. So any object on the Moon weighs 1/6th of its weight on Earth. What does not change is the amount of matter in an object. That is called its mass. On Earth, mass and weight are the same, for practical purposes. The trip to the Moon shows they are not really the same.
From this we learn two things.
1. The weight of an object is variable; its mass is constant.
2. the pull of gravity varies according to the mass of an object. The Earth pulls more strongly than the Moon. A person also exerts a gravitational pull, but it is so tiny it is ignored for all practical purposes.
The Earth has mass. Every particle of matter has mass. So the Earth pulls on every object and person and they pull on the Earth. Gravity pulls on the mass and gives it weight.
Definition of Mass
Mass - it's a bit more complicated to explain in simple terms, the most basic is Mass = the density of the matter from which the object is composed.
Gravity is created by mass. The bigger and denser the mass the more pull (gravity) it develops. This pull (force) creates a reaction to other objects within its gravitational influence which have a mass of their own. Which virtually means any substance, including light.
Definition of Inertia
The resistance of any physical object to any change in its motion (including a change in direction). In other words, it is the tendency of objects to keep moving in a straight line at constant linear velocity, or to keep still.
Highlights by Me for clarity
reply to post by turbonium1
You don't get it.
A centrifugal force can exist within a spacecraft, yes.
As you said - an artifical gravity can be created by spinning the spacecraft.
So centrifugal force requires gravity. As I told you.
I didn't say it was only possible from the gravity of planets, now did I? No, I did not.
I said centrifugal force requires a gravity environment.
My point is made.
Artificial gravity is created by inertia, not by mass. They are completely different. The Earth's mass creates gravity where a spinning artificial gravity is created by inertia. Simple
Even though the bag in the video is reactionary to the gravity of the Moon, it is not gravity which causes the bag to expand. That is caused by inertia. However, the gravity of the Moon does cause the bag to "fall back" to the surface of the Moon in a projectile trajectory.
And, in the video, the bag's trajectory indicates a lack of atmosphere, and a gravitational field intensity of only 1.63 m/s2 as compared to the gravitational field intensity on the surface of the earth of 9.8 m/s2.
turbonium1
Why would it have to inflate a lot more?
I can throw a bag in air, and get the very same result. A bag with the same degree of expansion as the Apollo bag.
There's no support for your claim
turbonium1
Do you see a good reason for why he'd take a 'stick' and fling away a plastic bag into mid-air? Because it was 'in his way'?
Sure, no problem buying that one!!
He throws this bag up with a stick, so we would assume it's NOT for any reason. It is a random act.
But then we see the camera pans a little to the right, at the perfect moment - just before the bag is thrown up.
A camera that just pans a bit for no reason, but it points to an astronaut just before he throws a bag into mid-air, for no reason .
No way.
turbonium1
Do you see a good reason for why he'd take a 'stick' and fling away a plastic bag into mid-air? Because it was 'in his way'?
He throws this bag up with a stick, so we would assume it's NOT for any reason. It is a random act.
But then we see the camera pans a little to the right, at the perfect moment - just before the bag is thrown up.
A camera that just pans a bit for no reason, but it points to an astronaut just before he throws a bag into mid-air, for no reason .
No way.
choos
because the bag will act similar to a parachute..
turbonium1
Another thing -
The bag is not being lifted into mid-air by his stick - for the most part.
He is propping up the bag with a stick, near to object(s) on the ground.
He lifts the bag up with his stick. Then, it lofts away, high above, into mid-air.
It is an illusion, to make it appear to us that they are, indeed, on the moon.
The bag - it is slow at first, while it's rising by the stick. But to suddenly blast off into Warp Speed? Nonsense. It slows down after that, until it lands.
This is why the bag lifts so high. No strings, perhaps it was a swift blast of air.
It fits what we see. The bag is slow, suddenly blasts into lightspeed for a moment, then it slows back down again, until it lands.
And no lunar gravity, that's for sure!
choos
turbonium1
Do you see a good reason for why he'd take a 'stick' and fling away a plastic bag into mid-air? Because it was 'in his way'?
Sure, no problem buying that one!!
He throws this bag up with a stick, so we would assume it's NOT for any reason. It is a random act.
But then we see the camera pans a little to the right, at the perfect moment - just before the bag is thrown up.
A camera that just pans a bit for no reason, but it points to an astronaut just before he throws a bag into mid-air, for no reason .
No way.
are we watching the same clip????
there is no pan at all.. you are lying and making things up again..
turbonium1
I thought the pan was done during the other throw, but they do pan it, which is the point being made here.
So how can they pan it from Earth, as it actually happens on the moon?? It can't. That pan is impossible because of the delay.
onebigmonkey
turbonium1
Another thing -
The bag is not being lifted into mid-air by his stick - for the most part.
He is propping up the bag with a stick, near to object(s) on the ground.
He lifts the bag up with his stick. Then, it lofts away, high above, into mid-air.
It is an illusion, to make it appear to us that they are, indeed, on the moon.
The bag - it is slow at first, while it's rising by the stick. But to suddenly blast off into Warp Speed? Nonsense. It slows down after that, until it lands.
This is why the bag lifts so high. No strings, perhaps it was a swift blast of air.
It fits what we see. The bag is slow, suddenly blasts into lightspeed for a moment, then it slows back down again, until it lands.
And no lunar gravity, that's for sure!
A swift blast of air that disturbs no dust? A blast of air from what? Where? Your explanation for what would be required in order for a bag to behave in the way you think it is behaving is getting ever more complex.
edit on 27-12-2013 by onebigmonkey because: link provided above!
onebigmonkey
turbonium1
I thought the pan was done during the other throw, but they do pan it, which is the point being made here.
So how can they pan it from Earth, as it actually happens on the moon?? It can't. That pan is impossible because of the delay.
The first throw is of the dust cover for the geophone experiment. He's throwing it to get rid of it.
The pan is coincidental.
onebigmonkey
Now that I've seen the clip properly I can put it in some sort of context.
The bag is the cover for the heat flow experiment.
The bag flick occurs just after John Young has trashed the heat flow experiment by yanking out the cables.
The flick is actually his 3rd attempt to get the bag out of the way.
Here's a link to the full clip:
www.hq.nasa.gov...
So now we do have a reason for the bag to be flicked: annoyance.
I'm not sure which video Turbonium is watching either. The bag is quite obviously not being affected by any atmosphere at all, and I have never seen a bag behave like that on Earth.
Here's another version: www.youtube.com...
The only panning I can see over the whole EVA is between the two astronauts, and as Young moves over to the right of screen after he rips the cable.