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Search: Posts Made By: Perpetual Student
Forum: Science, Mathematics, Medicine, and Technology 18th January 2018, 09:04 AM
Replies: 14
Views: 2,177
Posted By Perpetual Student
https://youtu.be/e0eJXttPRZI Here is the link.

https://youtu.be/e0eJXttPRZI
Here is the link.
Forum: Science, Mathematics, Medicine, and Technology 18th January 2018, 08:59 AM
Replies: 14
Views: 2,177
Posted By Perpetual Student
This is the first of a lecture series on tensor...

This is the first of a lecture series on tensor calculus I that used to get up to speed when confronted with Einstein’s field equations. It required a few months of my time (and a diversion away from...
Forum: Science, Mathematics, Medicine, and Technology 17th May 2017, 04:03 PM
Replies: 126
Views: 17,579
Posted By Perpetual Student
There is no doubt that tolerance for high levels...

There is no doubt that tolerance for high levels of sodium varies a great deal among individuals.
In my case, I spent most of my life with no consequences to high levels of sodium intake (Perhaps I...
Forum: Science, Mathematics, Medicine, and Technology 21st February 2017, 11:04 PM
Replies: 3,559
Views: 755,407
Posted By Perpetual Student
You!

You!
Forum: Science, Mathematics, Medicine, and Technology 21st February 2017, 11:00 PM
Replies: 3,559
Views: 755,407
Posted By Perpetual Student
How exhausting! There is no scientific evidence,...

How exhausting! There is no scientific evidence, no observational data, no scientific methodology, no mathematical demonstration or logic that can dissuade a true believer.
Forum: Science, Mathematics, Medicine, and Technology 21st February 2017, 10:49 PM
Replies: 469
Views: 70,150
Posted By Perpetual Student
My excitement is growing every day. At the age of...

My excitement is growing every day. At the age of 77, this will be my first view of a total solar eclipse. I'm hoping for great viewing from Teton Village in Jackson Hole. Does anyone know of a "no...
Forum: Science, Mathematics, Medicine, and Technology 2nd February 2017, 11:25 PM
Replies: 15
Views: 1,838
Posted By Perpetual Student
Old grandpa Saccorhytus coronarius is looking...

Old grandpa Saccorhytus coronarius is looking pretty good.
Forum: Science, Mathematics, Medicine, and Technology 23rd January 2017, 10:53 PM
Replies: 37
Views: 3,591
Posted By Perpetual Student
Matrices may represent many diverse mathematical...

Matrices may represent many diverse mathematical and physical systems or objects. There is no one representation. I guess the simplest one might be simultaneous linear equations, which might be a...
Forum: Science, Mathematics, Medicine, and Technology 21st January 2017, 11:57 AM
Replies: 37
Views: 3,591
Posted By Perpetual Student
Try this: https://youtu.be/xyAuNHPsq-g

Try this:

https://youtu.be/xyAuNHPsq-g
Forum: Science, Mathematics, Medicine, and Technology 11th December 2016, 08:16 AM
Replies: 19
Views: 2,079
Posted By Perpetual Student
Re: "extremophiles" :thumbsup:

Re: "extremophiles"
:thumbsup:
Forum: Science, Mathematics, Medicine, and Technology 28th November 2016, 10:14 PM
Replies: 72
Views: 12,363
Posted By Perpetual Student
Long-winded irrelevant rant to move goalposts and...

Long-winded irrelevant rant to move goalposts and defend a prior long-winded irrelevant rant.
Forum: Science, Mathematics, Medicine, and Technology 26th November 2016, 05:04 PM
Replies: 72
Views: 12,363
Posted By Perpetual Student
He also said that Darwin was inspired by "the...

He also said that Darwin was inspired by "the adversary."
Forum: Science, Mathematics, Medicine, and Technology 22nd November 2016, 05:01 PM
Replies: 390
Views: 31,324
Posted By Perpetual Student
FIFY

FIFY
Forum: Science, Mathematics, Medicine, and Technology 18th November 2016, 05:25 PM
Replies: 54
Views: 4,273
Posted By Perpetual Student
:thumbsup:

:thumbsup:
Forum: Science, Mathematics, Medicine, and Technology 14th November 2016, 07:19 PM
Replies: 1,108
Views: 189,716
Posted By Perpetual Student
Comments on the video: If nothing else, the...

Comments on the video:
If nothing else, the concept of space-time and a "now slice" does suggest that the universe is deterministic. Some of us have discussed this earlier in this thread. ...
Forum: Science, Mathematics, Medicine, and Technology 13th November 2016, 03:17 PM
Replies: 390
Views: 31,324
Posted By Perpetual Student
Anecdotes are generally worthless regarding the...

Anecdotes are generally worthless regarding the probability of any hypothesis, since they can be selected to support (or refute) any hypothesis. Anecdotes can be helpful only in suggesting areas to...
Forum: USA Politics 13th November 2016, 10:54 AM
Replies: 428
Views: 52,432
Posted By Perpetual Student
What utter hypocrisy! It's people like you that...

What utter hypocrisy! It's people like you that are the problem. Without training in mathematics and physics, you deny the findings of professionals in the field of physics, people who have gained...
Forum: USA Politics 10th November 2016, 07:05 PM
Replies: 428
Views: 52,432
Posted By Perpetual Student
Last week Joe Fleedouple of the Podunk...

Last week Joe Fleedouple of the Podunk Daily-Tribune-Breeze was resaurant critic; today he is the science editor.
Forum: USA Politics 10th November 2016, 06:59 PM
Replies: 428
Views: 52,432
Posted By Perpetual Student
Do they also give "equal time" to all religions...

Do they also give "equal time" to all religions (including non-believers)? Of course not! So-called "equal time" is a meaningless mantra.
Journalists are generally as ignorant of science as the...
Forum: USA Politics 10th November 2016, 12:01 PM
Replies: 428
Views: 52,432
Posted By Perpetual Student
Unfortunately, "higher education" is not very...

Unfortunately, "higher education" is not very high. We see people on this forum routinely rejecting mainstream science for their own crackpot notions, having no regard or respect for the hard work...
Forum: Science, Mathematics, Medicine, and Technology 9th November 2016, 10:54 PM
Replies: 1,108
Views: 189,716
Posted By Perpetual Student
How might someone with no descernable mathematics...

How might someone with no descernable mathematics knowledge have any understanding about a theory and its philosophical implications -- if that theory is described by a mathematical expression?
Forum: Science, Mathematics, Medicine, and Technology 8th November 2016, 04:47 PM
Replies: 4,415
Views: 645,204
Posted By Perpetual Student
Actually, the first requirement is a serious...

Actually, the first requirement is a serious study of physics and mathematics followed by an exploration of scientifically based cosmology. This generally requires many years of dedication and hard...
Forum: Science, Mathematics, Medicine, and Technology 7th November 2016, 08:36 PM
Replies: 24
Views: 8,299
Posted By Perpetual Student
I agree. Einstein had uncanny instincts about the...

I agree. Einstein had uncanny instincts about the physical world. The fact that he sought out mathematicians to help with creating a theory of gravity consistent with special relativity speaks to...
Forum: Science, Mathematics, Medicine, and Technology 6th November 2016, 08:18 PM
Replies: 1,108
Views: 189,716
Posted By Perpetual Student
Is there some fantasy forum to which the...

Is there some fantasy forum to which the moderators can move this nonsense?
Forum: Science, Mathematics, Medicine, and Technology 5th November 2016, 08:26 PM
Replies: 1,108
Views: 189,716
Posted By Perpetual Student
That's not true. I have a chair I often sit on...

That's not true. I have a chair I often sit on that has a "Locked-in Consciousness." It communicates with me through vibrations to my butt. I was mystified by the language until I noticed the chair...
Forum: Science, Mathematics, Medicine, and Technology 2nd November 2016, 08:15 PM
Replies: 24
Views: 8,299
Posted By Perpetual Student
We love heroes and Einstein for his amazing...

We love heroes and Einstein for his amazing insights into the physical world is deservedly at the apex. Nevertheless, we must wonder, if it were not for Minkowski, Levi-Civita, Hilbert and Grossmann...
Forum: Science, Mathematics, Medicine, and Technology 2nd November 2016, 08:05 PM
Replies: 24
Views: 8,299
Posted By Perpetual Student
Fair enough, but the historical record (his own...

Fair enough, but the historical record (his own papers) show that the Reimann tensor was too cumbersome and resulted in failure at that time. I believe it was Marcel Grossmann, who first recommended...
Forum: Science, Mathematics, Medicine, and Technology 2nd November 2016, 04:47 PM
Replies: 24
Views: 8,299
Posted By Perpetual Student
I have a differing perspective from some of the...

I have a differing perspective from some of the comments above. It seems that, based on historical accounts, Einstein's great genius was his uncanny intuition about physics, not his mathematics....
Forum: Science, Mathematics, Medicine, and Technology 1st November 2016, 11:52 AM
Replies: 24
Views: 8,299
Posted By Perpetual Student
On the other hand, Bell's inequality and...

On the other hand, Bell's inequality and subsequent experiments seem to rule out the possibility of hidden variables.
Forum: Science, Mathematics, Medicine, and Technology 1st November 2016, 11:43 AM
Replies: 24
Views: 8,299
Posted By Perpetual Student
Yes, he held out for the possibility of "hidden...

Yes, he held out for the possibility of "hidden variables" underlying the unintuitive aspects of QM. Although very unlikely, he could still be right.
Forum: Science, Mathematics, Medicine, and Technology 1st November 2016, 09:25 AM
Replies: 24
Views: 8,299
Posted By Perpetual Student
:thumbsup:

:thumbsup:
Forum: Science, Mathematics, Medicine, and Technology 31st October 2016, 06:23 PM
Replies: 24
Views: 8,299
Posted By Perpetual Student
Contrary to popular accounts, Einstein did not...

Contrary to popular accounts, Einstein did not work in a vacuum. Lorentz and Poincare were very much involved in the mathematics of SR. Later, Minkowski was the originator of the concept of...
Forum: Science, Mathematics, Medicine, and Technology 25th October 2016, 05:29 PM
Replies: 4,415
Views: 645,204
Posted By Perpetual Student
My 14 year old grandson could explain it to you.

My 14 year old grandson could explain it to you.
Forum: Science, Mathematics, Medicine, and Technology 19th October 2016, 08:48 PM
Replies: 136
Split Thread: Musings on Infinity
Views: 33,279
Posted By Perpetual Student
The point is that in the context of the real...

The point is that in the context of the real number field, ∞ is not a number. The real number field is the basis of the ordinary arithmetic we all use every day.
Forum: Science, Mathematics, Medicine, and Technology 19th October 2016, 04:08 PM
Replies: 136
Split Thread: Musings on Infinity
Views: 33,279
Posted By Perpetual Student
Insult noted. From that Wikipedia article: ...

Insult noted. From that Wikipedia article:



So, you agree, expressions like x/∞ are meaningless.
Forum: Science, Mathematics, Medicine, and Technology 19th October 2016, 03:57 PM
Replies: 136
Split Thread: Musings on Infinity
Views: 33,279
Posted By Perpetual Student
What do you mean? Infinity is a concept, usually...

What do you mean? Infinity is a concept, usually appearing as a limit. What "arithmetic expressions are defined for it"? Again: in what context is it a number?
Forum: Science, Mathematics, Medicine, and Technology 19th October 2016, 03:44 PM
Replies: 136
Split Thread: Musings on Infinity
Views: 33,279
Posted By Perpetual Student
In what context is infinity a number?

In what context is infinity a number?
Forum: Science, Mathematics, Medicine, and Technology 16th October 2016, 10:20 PM
Replies: 136
Split Thread: Musings on Infinity
Views: 33,279
Posted By Perpetual Student
:thumbsup: This and the fact that x/0 is...

:thumbsup: This and the fact that x/0 is undefined for all x makes this discussion meaningless.
Forum: Science, Mathematics, Medicine, and Technology 3rd October 2016, 07:35 AM
Replies: 74
Views: 17,717
Posted By Perpetual Student
It is not correct to say that dark matter is...

It is not correct to say that dark matter is undetectable. By definition, dark matter interacts with matter gravitationally.
We may or may not be able to construct some small scale (laboratory)...
Forum: Science, Mathematics, Medicine, and Technology 2nd October 2016, 10:45 AM
Replies: 221
Views: 72,233
Posted By Perpetual Student
Yes, since t' = t'(t,x,v), partial derivative...

Yes, since t' = t'(t,x,v), partial derivative notation would apply.

∂t'/∂v = -(vx/c2)(1 - v2/c2)-1/2 + (v/c2)(1 - v2/c2)-3/2(t - xv/c2)
Forum: Science, Mathematics, Medicine, and Technology 1st October 2016, 12:52 PM
Replies: 221
Views: 72,233
Posted By Perpetual Student
Chaîn rule and product rule.

Chaîn rule and product rule.
Forum: Science, Mathematics, Medicine, and Technology 30th September 2016, 10:11 PM
Replies: 221
Views: 72,233
Posted By Perpetual Student
For this equation? t' = γ(t - vx/c^2) If so,...

For this equation?
t' = γ(t - vx/c^2)
If so, neither is the correct derivative since v appears in γ. In any case, since X is also a variable, I would suggest a partial derivative is more...
Forum: Science, Mathematics, Medicine, and Technology 21st September 2016, 07:36 PM
Replies: 658
Views: 188,868
Posted By Perpetual Student
It was quite clear. You are dealing with willful...

It was quite clear. You are dealing with willful contrarians here, who seem to delight in winning debating points rather than having a genuine discussion.
Forum: Science, Mathematics, Medicine, and Technology 14th September 2016, 04:33 PM
Replies: 658
Views: 188,868
Posted By Perpetual Student
Sorry for the confusion. I assumed it was clear I...

Sorry for the confusion. I assumed it was clear I meant "death sentence if there is no medical intervention." I see now that it was not clear. I do know quite a few people who are cancer survivors...
Forum: Science, Mathematics, Medicine, and Technology 13th September 2016, 09:50 PM
Replies: 658
Views: 188,868
Posted By Perpetual Student
I doubt that there are thousands of such trials;...

I doubt that there are thousands of such trials; however, there is no need. My comment:

referred to the whole paragraph, not only the last sentence of my post.
In any case, my own casual...
Forum: Science, Mathematics, Medicine, and Technology 13th September 2016, 09:40 PM
Replies: 282
Views: 19,185
Posted By Perpetual Student
Answering these questions requires some thought....

Answering these questions requires some thought. Unfortunately I'm currently packing for a trip and don't have the time.
Perhaps I can respond more fully in about a week. My immediate thoughts are:...
Forum: Science, Mathematics, Medicine, and Technology 13th September 2016, 09:23 PM
Replies: 282
Views: 19,185
Posted By Perpetual Student
Perhaps so, but take another look at my post. I...

Perhaps so, but take another look at my post. I was discussing algebra, etc.
Forum: Science, Mathematics, Medicine, and Technology 13th September 2016, 04:47 PM
Replies: 658
Views: 188,868
Posted By Perpetual Student
No, I have looked at many studies. They are...

No, I have looked at many studies. They are indeed worse. The studies are typically much smaller. The conclusions are more subjective and the results and efficacy of therapies are less tangible.
Forum: Science, Mathematics, Medicine, and Technology 13th September 2016, 04:45 PM
Replies: 658
Views: 188,868
Posted By Perpetual Student
This is a general description of clinical trials....

This is a general description of clinical trials. Could you be more specific?
Forum: Science, Mathematics, Medicine, and Technology 13th September 2016, 03:20 PM
Replies: 658
Views: 188,868
Posted By Perpetual Student
I cannot agree with that conclusion. A diagnosis...

I cannot agree with that conclusion. A diagnosis of cancer is almost always accurate and usually a death sentence. A combination of surgery, radiation and chemotherapy keeps patients alive --...
Showing results 1 to 50 of 600

 
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