Yes, maybe it is a one time focus to infinity process. But I think I read that it will do continuous adjustments to the actuators for optimal long time performance as environment shift.
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While its above its final operating temperature, it wont be able to see objects that are red shifted to below its temperature. Once its reached operating temp, it will be able to see further back in time.
You still have to focus IR. I guess the mirrors will still be all over the place for another few weeks. I remember reading about the Mount Palomar 200" telescope mirror (which held the record for size for many years) when I was a kid - it took a year to cool down after they cast it before polishing could begin.
You still have to focus IR. I guess the mirrors will still be all over the place for another few weeks. I remember reading about the Mount Palomar 200" telescope mirror (which held the record for size for many years) when I was a kid - it took a year to cool down after they cast it before polishing could begin.
Ok i get it . But its a defect in human functioning . If we dont do anything we die from boredom eventually . Its not the case with computers . So we have to do something to avoid death . So saying we are doing stuff . I want to disagree . We have to .
Watching some videos on time. A lot of definitions don't make sense to me as they are too complicated. Nature does not like complicated. She takes the easy way out. Anyway it was describing why time only moves forward and comparing time with entropy. Passing time being an increase in entropy. That you exist in the present means data exists as history so the probabilities have happened. You can't go back. It has happened and you can't reverse happening. Now, time moves at different rates relative to your surroundings, so it may seem you can lead or lag relative to others, but you are still always moving forward.
I see the parallels. Defining time and entropy with he past being increasing data as a possibility happened, The future being all possible outcomes, but none are real until they happen. When possibility becomes data is where you are in space-time and sort of solves the predestinony paradox. ( never liked it as it is actually pretty depressing) Of course, nature does not care what I like.
But, I see this as a re-use of a simple rule, not the joining of two things. I still fall back on time being a dimension. That way it is on the same level as space and all the smart stuff Einstein said about space-time makes more sense.
What about the stuff Cern is doing with "X particles"
I see the parallels. Defining time and entropy with he past being increasing data as a possibility happened, The future being all possible outcomes, but none are real until they happen. When possibility becomes data is where you are in space-time and sort of solves the predestinony paradox. ( never liked it as it is actually pretty depressing) Of course, nature does not care what I like.
But, I see this as a re-use of a simple rule, not the joining of two things. I still fall back on time being a dimension. That way it is on the same level as space and all the smart stuff Einstein said about space-time makes more sense.
What about the stuff Cern is doing with "X particles"
If you have ever walked the streets of Berkley, you might think some of them are walking around here already.
The idea that time 'flows', appealing as it may sound, does not conform with Einstein's special theory of relativity.
According to the theory, both the past and future are simply 'there', laid out as part of four-dimensional spacetime.
Just as we can think of of all locations in space existing even if we are not there to to experience them, then all of time (past, present and future) is constantly in existence.
According to Einstein, time does not 'flow', it just 'is'! 😵
Here's an interesting article on "The Arrow of Time": https://www.exactlywhatistime.com/physics-of-time/the-arrow-of-time/
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What is hard to accommodate is that, if time is a dimension, it isn't the same kind of dimension as the three dimensions of space.
We can choose to move through space, but have no choice but to move through time (if we can be said to move through time at all!).
The lectures I was listening to suggest the future is only the sum of all possibilities. It does not exist. Only at the present does a set of probabilities transition into "data" in that it exists and contributes to increased entropy.
Time is unidirectional. Variable, but unidirectional. I see no problem with it being a dimension. Just because we can't envision it in our 3 dimensional frame of reference does not mean it does not work that way.
How we perceive time is related to our position in space-time. But data exists along with the expansion of the universe as at the horizon, it is now, so probability becomes data, or history is that is easier to understand.
This is not exactly as Einstein envisioned it. He was brighter than a whole gaggle of us, but that does not mean he had every detail correct. He spent most of his life chasing how to link gravity to the other three forces.
Time is unidirectional. Variable, but unidirectional. I see no problem with it being a dimension. Just because we can't envision it in our 3 dimensional frame of reference does not mean it does not work that way.
How we perceive time is related to our position in space-time. But data exists along with the expansion of the universe as at the horizon, it is now, so probability becomes data, or history is that is easier to understand.
This is not exactly as Einstein envisioned it. He was brighter than a whole gaggle of us, but that does not mean he had every detail correct. He spent most of his life chasing how to link gravity to the other three forces.
X for mysterious!
I'm looking at the recent news right now.
Scientists at the LHC have detected these exotic X particles in a recreation of the immensely hot conditions that existed in the first millionths of a second after the Big Bang.
They hope now to be able to explore the structure of these short-lived particles which are thought to have formed at the dawn of the universe.
https://scitechdaily.com/large-hadr...les that were abundant in the early universe.
Considering the recently published hypotheses of what time is, if Einstein were alive today, do you think he would by now have come up with a definitive answer to this question? Is there one you think could be attributable to his mindset? Bonsai posted his theory, most likely parroted/gleaned from the net, a while back.
I have wondered out aloud here on a few occasions whether time is perhaps created through entropy and that it exists as a medium between objects rather than being something we consider a dimension or a blank canvas. If two objects could occupy the exact same space, they would not experience any time difference. We always think of energy as power expended over time - so time is the independent variable. But what if instead in the act of expending energy, time was created? Space between objects cannot exist without the expenditure of energy, and space (ie distance) between objects is the same as saying there is a time difference if we consider the speed of light as our fundamental metric since as far as we know, it is the same everywhere in the universe and for all observers. So, time is created, it is not a 'canvas' upon which events take place (I think this is how Newton thought about time). So this leads one to ask how EM propagates through a vacuum and perhaps it is simply because it is perturbing time. This notion would be completely relativistic and would be the same for all observers.
When you accelerate, all you are doing is moving the object being accelerated from one time reference to another. Once the process of acceleration is over (ie you remove the accelerating force) the object now occupies a new reference frame wrt its old one. If its in space, it will simply speed along . . .
When you accelerate, all you are doing is moving the object being accelerated from one time reference to another. Once the process of acceleration is over (ie you remove the accelerating force) the object now occupies a new reference frame wrt its old one. If its in space, it will simply speed along . . .
With the change of format, I find it's not so easy to locate previous posts in the thread.
Jumping back over large blocks of threads was once possible, but we now appear restricted to looking back only a couple of pages at a time.
I've gone back a wheen of pages and still haven't reached your last reference to entropy and time! ☹️
EDIT: I now see there is a "Go to page" function (click the three dots symbol) which could help a bit!
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No no, he's doing that now while dead, as the saying goes. However if he were alive still...
It was a serious question.
It was a serious question.
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