1

New Theories / Re: Molecular chain that would end all life? Causality Firewall of life/ CFL?

« on: Yesterday at 19:14:19 »

 Unclear.

Deeply.

2

General Science / Re: How much of me is original?

« on: Yesterday at 18:30:24 »

(not teeth - they all fell out and were replaced when you were a child!)

The replacements may have already been in place, but it's probably beside the point.

I'm not saying this is an accurate mechanism to answer the question but it does give some indication.
In a typical year you can expect to eat something like 1000 Kg of food. That's about 7 times your weight.
The stuff food is made from isn't very different from the stuff you are made from.
So each year your body takes in 7 times its mass in "stuff".

If that were properly mixed then only 1/7 of you would be still there at the end of the first year.
So it's 1 in 49 after 2 years and by the time you are 65 it's pretty close to bugger all.

Obviously some bits are better mixed than others.
The chip in my front tooth that I have been carrying round since school is still there- more like 45 years than 65, but the point remains.
Most of that stuff is pretty much fixed. Skeletal bone is turned over much faster than that, but still pretty slowly.
My skeleton is something like 10Kg
It contains something like 1400 grams of Calcium
"The calcium content of bone at maturity is approximately 1,200 g in women and 1,400 g in men"
from
https://www.ncbi.nlm.nih.gov/books/NBK56060/
and it turns over about 0.5 grams per day
https://www.medscape.com/answers/241893-20078/how-much-calcium-turnover-occurs-normally-each-day
so that's about 180 grams per year or (very roughly) the whole lot gets rebuilt every 7 or 8 years.
Some bits deep in the middle might date back to when I was a teenager.
At best, very little of it will be original.
"At full-term birth, the human infant has accrued about 26 to 30 g of calcium, most of which is in the skeleton."

Just a thought; if we are what we eat, why are we not "new and improved"?

3

New Theories / Re: What is the real meaning of the most-distant-quasar/galaxy?

« on: Yesterday at 18:00:12 »

Therefore, would you consider the solar system as a solid/rigid system or as a temporary system?

Well, sometimes the Earth and Mars are on the same side of the Sun; sometimes they are on opposite sides.
Does that sound like a solid to you?

In the longer term, we know it's not stable.
This guy pointed that out over 100 years ago.
https://en.wikipedia.org/wiki/Henri_Poincar%C3%A9#Three-body_problem

4

New Theories / Re: Molecular chain that would end all life? Causality Firewall of life/ CFL?

« on: Yesterday at 13:43:51 »

If the hydrogen bond between water molecules suddenly disappeared all life (as we know it) would die.
Also the oceans here would boil.
But, on a scale bigger than planets, the weird properties of water probably don't matter much.

This has nothing to do with causality or firewalls.
It's a fantasy.

5

Just Chat! / Re: Best oil for frying "fish n chips"?

« on: Yesterday at 11:00:09 »

Belgians will always remind you that "French Fries" were actually invented by a Belgian...

I strongly suspect that the South Americans beat them to it.

6

Just Chat! / Re: Best oil for frying "fish n chips"?

« on: Yesterday at 08:39:14 »

From the point of view of the chip shop, the best oil is often the cheapest.
My personal preference is dripping but it's not  suitable for some people.

7

That CAN'T be true! / Re: What causes motion sickness?

« on: Yesterday at 08:36:00 »

According to the Chinese website, this kind of Active Noise Cancellation can offset low-frequency noise, but not high-frequency noise.

It is wrong.
How could the noise cancelling work at low frequencies where the microphone and speaker do not work?

You need to stop believing everything you read, and think a bit.

Carsickness is caused by low-frequency noise

No.
Because some deaf people get carsick.

8

Just Chat! / Re: Would society be a better place if "jocks" instead aspired to be like astronauts

« on: 29/06/2022 21:10:15 »

I don't think anyone forces them, so presumably, yes.

Or, maybe it's innate like left-handedness.

9

New Theories / Re: What is the real meaning of the most-distant-quasar/galaxy?

« on: 29/06/2022 21:09:08 »

but you claim that we are just lucky to see them all together in this shape.

If you look closely, you will see that I never said that.

So please, what kind of force could hold the spiral arm or the bar for millions and billions of years?

Gravity.
Specifically, the gravity of rather more mass than is visible.
So we know there's some mass there that we can't see.

10

General Science / Re: Why is mains electricity 240v AC?

« on: 29/06/2022 18:46:11 »

Digital meters use integration, selecting the time constants of the integration so that it is a multiple of both 50 and 60Hz mains,

Other frequencies are available.

You might also try one of these- a pretty good RMS measure independent of crest factor and frequency over a very large range.
https://en.wikipedia.org/wiki/Ammeter#Hot-wire

11

New Theories / Re: Origin of magnetic force

« on: 29/06/2022 18:30:14 »

No reference quotes are needed as anyone can repeat the experiments at any time.

And they do exactly what Maxwell would have predicted.
So why have you introduced a fairy tale?
Also, you seem to have forgotten to answer this.

Nobody is suggesting that electrons get accelerated to anything like the speed of light in a conductor.
So your claim at about 34 seconds makes no sense.

Were you aware of that?
(That should be a simple yes/ no answer).

12

New Theories / Re: What is the real meaning of the most-distant-quasar/galaxy?

« on: 29/06/2022 18:28:00 »

but you claim that we are just lucky to see them all together in this shape.

If you look closely, you will see that I never said that.

Why did you make it up?

13

That CAN'T be true! / Re: What causes motion sickness?

« on: 29/06/2022 09:00:16 »

Neither the microphones, nor the speakers in NC headphones will work a those frequencies.
So the claim is essentially impossible.

https://www.nytimes.com/wirecutter/blog/what-noise-cancelling-headphones-do/

14

New Theories / Re: What is the real meaning of the most-distant-quasar/galaxy?

« on: 29/06/2022 08:55:47 »

You fully accept that the bar arm (and spiral arm) are made out of stars that are bonded by gravity force.

Only in the same way that a swarm of flies is "bonded" by the air around them.
If you just wait a while you will see that they become separate.

15

Just Chat! / Re: Would society be a better place if "jocks" instead aspired to be like astronauts

« on: 28/06/2022 18:34:21 »

Do Jocks aspire to be Jocks?

16

Technology / Re: What Question Could You Ask To Determine Sentience Of An AI ?

« on: 28/06/2022 18:32:05 »

What Question Could You Ask To Determine Sentience Of A Human?

17

New Theories / Re: What is the real meaning of the most-distant-quasar/galaxy?

« on: 28/06/2022 17:48:17 »

Actually I have a theory that meets the observation by 100%.

There are 2 options here:
1.  You are lying.
2.  You don't know what a theory is.

The two options are not mutually exclusive.

18

General Science / Re: Why is mains electricity 240v AC?

« on: 28/06/2022 17:46:51 »

If you are using a mechanical moving coil meter, you can use its mass to smooth out the reading.

If you are using a digital meter then you need to so something more complicated to get rid of aliasing errors.
The easiest way to do that is with a capacitor or some such to roll off the high frequencies.

19

New Theories / Re: Origin of magnetic force

« on: 28/06/2022 16:12:45 »

Nobody is suggesting that electrons get accelerated to anything like the speed of light in a conductor.
So your claim at about 34 seconds makes no sense.

Were you aware of that?
(That should be a simple yes/ no answer).

You might find this dispels your misunderstandings.

20

New Theories / Re: Can conscious thought act on matter?

« on: 28/06/2022 09:35:50 »

" Can conscious thought act on matter?"
If it didn't, we wouldn't know it existed (other than our own).