Understanding the universe.

[petemcewan 27]

Mac33,

What is your problem with Everett?

 

What Everett has taught me-and yes I read about him years ago is the following:

 

You cannot rewind the wave function of the universe-and then rerun it. No time travel possible.

 

The universe is a one time only event which includes us as part of the wave function. Each observation changes the wave function

of the universe and there is no going back.

Everett gave a solution to the Schrodinger's pussy cat paradox.

 

The reason we don't observe live cats, dead cats and a mixture of the two (zombie pussycats) is that there is an infinite number of possible worlds.

Quantum solipsism is out the window, quantum hippy mysticism is expunged and determinism is once more restored. For some physicists, the wave function is assumed to be objective.

Edited November 4, 2018 by petemcewan

[MAC33 10]

Paralysis by analysis to the above.

 

Keep it simple Pete - we feel no motion as the earth is stationary.

 

Pretty simple really.

[Halibut 12]

Paralysis by analysis to the above.

 

Keep it simple Pete - we feel no motion as the earth is stationary.

 

Pretty simple really.

 

You've just described yourself perfectly.

 

P.S. 'Paralysis by analysis' really means ' there were some complex and challenging ideas presented, so I'll just close my mind and not make any effort'.

Edited November 4, 2018 by Halibut

[Waldo 96]

we feel no motion as the earth is stationary.

 

I know right? It's like when I get on a train, I can't feel any movement, so clearly it's everything else that is moving! Do you get motion sickness every time I catch a train?

[petemcewan 27]

Mac33,

 

You might get your hands on Everett's work-give it ago.

 

 

Paper by H. Everett.

 

The Theory of the Universal Wave Function and 'Relative State' Formulation of Quantum Mechanics, in The Many-Worlds Interpretation of Quantum Mechanics, 1973

 

Everett was instrumental in establishing the Mutually Assured Destruction hypothesis (MAD).

 

https://global.oup.com/academic/product/the-many-worlds-of-hugh-everett-iii-9780199552276?cc=us&lang=en

 

Buy a book and settle down to a read.

Edited November 4, 2018 by petemcewan

[Cyclone 10]

Paralysis by analysis to the above.

 

Keep it simple Pete - we feel no motion as the earth is stationary.

 

Pretty simple really.

 

Someone already pointed out your failure here. You don't feel any ACCELERATION which is completely different to velocity.

You also don't feel any motion if you're in a car at a constant speed on a smooth road. Or indeed on a train, or in a plane. You only feel acceleration, not velocity.

[petemcewan 27]

Mac33,

 

For your information.

 

Velocity: Unit: m/s

 

Acceleration: Unit: m/s 2 (metres per second squared )

 

 

 

Force: ma (metres x metres per second squared.

 

Force: Unit: Newtons.

 

The Force of acceleration is what you feel.

 

Note:

" The feeling of acceleration is really just your inertia acting to impede your acceleration. You feel stresses inside your body as its parts push on one another to make them all accelerate together and you interpret those stresses as a weight-like feeling in the direction opposite your acceleratio ".

Edited November 5, 2018 by petemcewan

[stifflersmom 11]

Mac33,

 

For your information.

 

Velocity: Unit: m/s

 

Acceleration: Unit: m/s 2 (metres per second squared )

 

 

 

Force: ma (metres x metres per second squared.

 

Force: Unit: Newtons.

 

The Force of acceleration is what you feel.

 

Note:

" The feeling of acceleration is really just your inertia acting to impede your acceleration. You feel stresses inside your body as its parts push on one another to make them all accelerate together and you interpret those stresses as a weight-like feeling in the direction opposite your acceleratio ".

 

There is little point posting this for Mac33's benefit, but if you do, it helps to get the units correct. Force = ma where m is the mass in kg. So the units of force are kilogram metres per second squared.

[truman 10]

There is little point posting this for Mac33's benefit, but if you do, it helps to get the units correct. Force = ma where m is the mass in kg. So the units of force are kilogram metres per second squared.

 

A newton is the force required to give a mass of 1 kilogram an acceleration of 1 metre per second per second. Just for clarity... A Newton is the SI unit of force...

[petemcewan 27]

Stifflersmum,

 

Quite correct. I put metres instead of mass (kg. SI unit )

F=ma.

 

Thank you for bringing it to my attention. I must have written that equation literally thousands of times.

 

And when it matters, I put the wrong unit-hey ho!

Edited November 5, 2018 by petemcewan

[fatrajah 10]

When I was at school it was written: P=mf instead of F=ma. Is it always written F=ma nowadays?

[petemcewan 27]

Fatraah,

 

Below is a table of Basic SI Units. F=ma has been used for as long as I can recall.

 

 

 

The Seven SI base units, which are comprised of:

m - Meter - Length.

s - Second - Time.

mol - Mole - Amount of Substance.

A - Ampere - Electric Current.

K - Kelvin - Temperature.

cd - Candela - Luminous Intensity.

kg - Kilogram - Mass.

12 Apr 2010

 

 

Here's a link to all the SI UNIts you are ever likely to want to know.

 

https://physics.nist.gov/cuu/Units/units.html

Edited November 5, 2018 by petemcewan