Every line of spacetime met at center of mass so a satellites moving in space is not following straight line throw space rather at an angle
But from the perspective of the object, is it not going in a straight line? If there is angular momentum, wouldn't it just continually veer off in a corresponding direction depending on what gravitational field it enters on it's course?
A freely moving object will move through spacetime in a geodesic, which is the equivalent of a straight line in normal space.
Just as a straight line does on a flat 2D surface, a geodesic represents the shortest distance between any two points in 4D spacetime.
If gravity is present, a straight line will follow the curvature of spacetime, similar to how movement in a straight line follows the surface of a sphere.
Just as a straight line does on a flat 2D surface, a geodesic represents the shortest distance between any two points in 4D spacetime.
If gravity is present, a straight line will follow the curvature of spacetime, similar to how movement in a straight line follows the surface of a sphere.
I think you are confusing between Weightlessness or micro gravity with gravitationally bend spacetime strightline. There difference . high Divers can tell that when they dive they are pulled in a direction of water and the forward push to avoid touching to diving platform . Resultant trajectory is infact hyperbolic.
But a freely moving obect in universe is never found. Everything have some kind of inherent vectors from previous processes. When we toss a projectile we pumping energy into it. A planet capturing some rock which also is have previous measurement quantities adding to new trajectory.
You are the one bringing about confusion when you mentioned "Every line of spacetime" when in fact you mean "every gravitational field line".
So let's be clear, it appears you are simply describing elementary projectile physics.
Attachments
Spacetime at the center of gravity in earth will be what it would be if if earth was of size of peanut with 0 mass.that is, Its would be completely governed by sun
If you remove outside influences such as gravity and air resistance, then an object will move with uniform velocity.
Why do you keep mentioning "spacetime" when it is clearly the wrong word to use in a Newtonian gravity context?
I'm sorry too, vishal.
I feel frustrated that I don't always fully comprehend the point you are making so that I may respond to it sensibly.
I'm still trying to get my head around your post #9,448 for example.
I feel frustrated that I don't always fully comprehend the point you are making so that I may respond to it sensibly.
I'm still trying to get my head around your post #9,448 for example.
Interesting Letter delivered by the Landlord today:
"To everyone at 2 Yarborough Road
31/5/2020 ( We put the Month in the middle in the UK, unlike the American Cousins... I don't know why. So it's the Very Very Merrie Month of May here. )
(Yes I noticed the wrong House and year number too, is he losing it? 😀 )
As I have explained in the past, we are on a low price for electricity, fixed for 3 years with "OPUS ENERGY". The contract expires in 2023.
I have received a letter saying that the cost is increasing on 1st. June by over 20%. The Unit Rate (Approx 15p per kWh last time I checked.) remains fixed, but there are variable charges - including maintaining the infrastructure and Networks to supply the electricity to customers. Apparently this is standard and in our contract. If you look at the OPUS ENERGY website ( No hyperlink provided.) the increases are explained there.
The GOOD THING (My emphasis.) is is that OPUS ENERGY is a small electricity supplier, and this may keep them in business. In the last 9 months over 30 small electricity and gas suppliers have gone BUST (My Schoolboyish Emphasis again.). Which means that the contracts are passed over to the BIG COMPANIES AGAIN AND PRICES INCREASE A LOT (Usual Capitalist tendencies IMO.). At my house in (Conservative.) Fareham, our supplier (Pure Planet) went out of business last September. SHELL became my supplier and my energy costs have more than doubled. Also, the gas supplier for 2* (Second integer witheld by me, beacause I know the power of the Google.) Yarborough Road (BRISTOL ENERGY) also went out of business and BRITISH GAS are charging almost 3 times as much.
So I will today adjust your electricity meter to cover the extra charge. Sorry about this.
Regards, ****. (Name Deleted by me.)"
(He was awfully apologetic about it. But I can live with 18p per unit. I just hope we aren't running on that fithy Nuclear Stuff from our Continental neighbours, or even further away from THOSE WHO WE CANNOT MENTION!)
Best Regards from your friendly Engineer Steve in Portsmouth, UK.
"To everyone at 2 Yarborough Road
31/5/2020 ( We put the Month in the middle in the UK, unlike the American Cousins... I don't know why. So it's the Very Very Merrie Month of May here. )
(Yes I noticed the wrong House and year number too, is he losing it? 😀 )
As I have explained in the past, we are on a low price for electricity, fixed for 3 years with "OPUS ENERGY". The contract expires in 2023.
I have received a letter saying that the cost is increasing on 1st. June by over 20%. The Unit Rate (Approx 15p per kWh last time I checked.) remains fixed, but there are variable charges - including maintaining the infrastructure and Networks to supply the electricity to customers. Apparently this is standard and in our contract. If you look at the OPUS ENERGY website ( No hyperlink provided.) the increases are explained there.
The GOOD THING (My emphasis.) is is that OPUS ENERGY is a small electricity supplier, and this may keep them in business. In the last 9 months over 30 small electricity and gas suppliers have gone BUST (My Schoolboyish Emphasis again.). Which means that the contracts are passed over to the BIG COMPANIES AGAIN AND PRICES INCREASE A LOT (Usual Capitalist tendencies IMO.). At my house in (Conservative.) Fareham, our supplier (Pure Planet) went out of business last September. SHELL became my supplier and my energy costs have more than doubled. Also, the gas supplier for 2* (Second integer witheld by me, beacause I know the power of the Google.) Yarborough Road (BRISTOL ENERGY) also went out of business and BRITISH GAS are charging almost 3 times as much.
So I will today adjust your electricity meter to cover the extra charge. Sorry about this.
Regards, ****. (Name Deleted by me.)"
(He was awfully apologetic about it. But I can live with 18p per unit. I just hope we aren't running on that fithy Nuclear Stuff from our Continental neighbours, or even further away from THOSE WHO WE CANNOT MENTION!)
Best Regards from your friendly Engineer Steve in Portsmouth, UK.
Go ahead and mention "him" with a suitable pseudonym. I can think of several off hand. 😗
I am aware that 50% of mchambin's Nuclear reactors across the English Channel (La Manche) are suffering from Pipe Corrosion.
Only the Scottish Windmills are looking effective. We'll discuss Scottish football tomorrow. 🙂
- Status
- Not open for further replies.