Classic from the Mrs! Vol 2
Discussion
br d said:
FidoGoRetroGo said:
Could the real physicists on here confirm that there is no true "Zero G" environment anywhere in the universe. My understanding is that all mass exhibits gravitational effects on all other mass, though of course infinitessimally small for small mass and vast distance.
Many people seem to think that when they see astronauts floating about on the ISS it's because there is "no gravity" rather than free-fall.FidoGoRetroGo said:
Could the real physicists on here confirm that there is no true "Zero G" environment anywhere in the universe. My understanding is that all mass exhibits gravitational effects on all other mass, though of course infinitessimally small for small mass and vast distance.
Yes that is correct. There are areas where the net gravitational force is effectively zero (e.g. at Lagrangian points) - however gravity only tends to zero as distance from that mass approaches infinity and remember even a single atom of matter exerts a gravitational force. To have true zero gravity - you would have to be at infinite distance from any mass.
Moonhawk said:
FidoGoRetroGo said:
Could the real physicists on here confirm that there is no true "Zero G" environment anywhere in the universe. My understanding is that all mass exhibits gravitational effects on all other mass, though of course infinitessimally small for small mass and vast distance.
Yes that is correct. There are areas where the net gravitational force is effectively zero (e.g. at Lagrangian points) - however gravity only tends to zero as distance from that mass approaches infinity and remember even a single atom of matter exerts a gravitational force. To have true zero gravity - you would have to be at infinite distance from any mass.
Einion Yrth said:
Ari said:
Vipers said:
Womans logic.
We go into ASDA which has two floors, she says -
"I need birthday paper, it's downstairs, so we will go upstairs first"
No where's my fekking crystal ball............
Anyone..? We go into ASDA which has two floors, she says -
"I need birthday paper, it's downstairs, so we will go upstairs first"
No where's my fekking crystal ball............
PS. No should be "Now"
andym1603 said:
Ari said:
Vipers said:
Womans logic.
We go into ASDA which has two floors, she says -
"I need birthday paper, it's downstairs, so we will go upstairs first"
No where's my fekking crystal ball............
Anyone..? We go into ASDA which has two floors, she says -
"I need birthday paper, it's downstairs, so we will go upstairs first"
No where's my fekking crystal ball............
Moonhawk said:
Yes that is correct. There are areas where the net gravitational force is effectively zero (e.g. at Lagrangian points) - however gravity only tends to zero as distance from that mass approaches infinity and remember even a single atom of matter exerts a gravitational force.
To have true zero gravity - you would have to be at infinite distance from any mass.
So what's gravity then? It should be understandable given it's calculable and consistent (barring gravitational time dilation). Actually, while I'm on a roll, what's mass...To have true zero gravity - you would have to be at infinite distance from any mass.
IANAP, to be clear. Just an insufficiently educated troll
Whoozit said:
So what's gravity then? It should be understandable given it's calculable and consistent (barring gravitational time dilation). Actually, while I'm on a roll, what's mass...
https://starchild.gsfc.nasa.gov/docs/StarChild/questions/question30.htmlNow we know, we don't know.............
And I don't know why you can't click on the link, gremlins.......
Edited by Vipers on Thursday 12th January 22:11
Vipers said:
https://starchild.gsfc.nasa.gov/docs/StarChild/que...
Now we know, we don't know.............
Ta very much. Rather sad that since that was written, smartphones and tablets were invented, there's been a black President of the US, and the Higgs boson has been observed. And we still don't understand why we don't fly off the surface of the planet.Now we know, we don't know.............
Edited by Vipers on Thursday 12th January 22:11
Vipers said:
andym1603 said:
Ari said:
Vipers said:
Womans logic.
We go into ASDA which has two floors, she says -
"I need birthday paper, it's downstairs, so we will go upstairs first"
No where's my fekking crystal ball............
Anyone..? We go into ASDA which has two floors, she says -
"I need birthday paper, it's downstairs, so we will go upstairs first"
No where's my fekking crystal ball............
The shop being referred to here has two tills upstairs, however these are rarely open. When you go in, you have a quick look upstairs to see if the tills are open. If they are open, then it is worth going back up afterwards with your shopping to avoid the long ques downstairs, if they are closed, then you don't need to go back up the escalator.
I am probably overthinking this.
(though to be fair I think there is a reduced chance of door dings in the upper car park so I normally park by the upstairs entrance anyway.)
Moonhawk said:
To have true zero gravity - you would have to be at infinite distance from any mass.
Or you could be at a point which is equi-gravitant* in all directions.* made-up word, but hopefully you understand - all of the gravitational forces perfectly cancel each other out. (In simplest terms, there are only two masses affecting you, and you are directly between them, but you are 4x as close to the one that is half as massive)
Vipers said:
andym1603 said:
Ari said:
Vipers said:
Womans logic.
We go into ASDA which has two floors, she says -
"I need birthday paper, it's downstairs, so we will go upstairs first"
No where's my fekking crystal ball............
Anyone..? We go into ASDA which has two floors, she says -
"I need birthday paper, it's downstairs, so we will go upstairs first"
No where's my fekking crystal ball............
I have a sneaking suspicion that andym was referring to a matter of procedural protocol which has nothing to do with the location of tills in a store. 
Edited by glenrobbo on Friday 13th January 14:04
glenrobbo said:
Vipers said:
andym1603 said:
Ari said:
Vipers said:
Womans logic.
We go into ASDA which has two floors, she says -
"I need birthday paper, it's downstairs, so we will go upstairs first"
No where's my fekking crystal ball............
Anyone..? We go into ASDA which has two floors, she says -
"I need birthday paper, it's downstairs, so we will go upstairs first"
No where's my fekking crystal ball............
I have a sneaking suspicion that andm was referring to a matter of procedural protocol which has nothing to do with the location of tills in a store. CanAm said:
glenrobbo said:
Vipers said:
andym1603 said:
Ari said:
Vipers said:
Womans logic.
We go into ASDA which has two floors, she says -
"I need birthday paper, it's downstairs, so we will go upstairs first"
No where's my fekking crystal ball............
Anyone..? We go into ASDA which has two floors, she says -
"I need birthday paper, it's downstairs, so we will go upstairs first"
No where's my fekking crystal ball............
I have a sneaking suspicion that andm was referring to a matter of procedural protocol which has nothing to do with the location of tills in a store. Up stairs it's clothes, electrical stuff and a till, and the greasy spoon. We only went in specifically for paper, we dont shop there, but she thought they might have the paper she wanted, they didn't.
Hence I have given up asking WTF are we doing, it's the way their minds work I think.
For Peanut Gallery, we shop in Sainsbury's, did notice in ASDA so many empty trollies abandoned adjacent to car parking spaces, lazy buggers.
Edited by Vipers on Friday 13th January 16:44
Bought my mum some of these for Christmas to put in her whisky
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They are hollow plastic with distilled water inside, that you put in the freezer to use without diluting your drink.
She tried them today, and came to me disappointed. Apparently, she was expecting them to stand up on the bottom of the glass rather than float on the surface of the drink.....
They are hollow plastic with distilled water inside, that you put in the freezer to use without diluting your drink.
She tried them today, and came to me disappointed. Apparently, she was expecting them to stand up on the bottom of the glass rather than float on the surface of the drink.....
ChemicalChaos said:
Bought my mum some of these for Christmas to put in her whisky
They are hollow plastic with distilled water inside, that you put in the freezer to use without diluting your drink.
She tried them today, and came to me disappointed. Apparently, she was expecting them to stand up on the bottom of the glass rather than float on the surface of the drink.....
Got some Whisky stones for crimbo, does the same, cool them in the freezer first, made out of granite, they don't float They are hollow plastic with distilled water inside, that you put in the freezer to use without diluting your drink.
She tried them today, and came to me disappointed. Apparently, she was expecting them to stand up on the bottom of the glass rather than float on the surface of the drink.....
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