John Cuthber

For what it's worth, we were using lead lined coffins long before we had discovered radioactivity.
https://gizmodo.com/workers-discover-700-year-old-lead-coffin-beneath-notre-1848660870

Lead is watertight.

(well... we can call it "water".)

A zinc lined lead coffin (once it's occupied)  is an electrolytic cell to generate hydrogen.
That's... not what I'd have done.
 

18 hours ago, Photon Guy said:

. Today, with all the scientific discoveries we made since, we know that if you're bitten by a radioactive spider...

Actually, we now know that all spiders are radioactive.

Thanks Phi.
Just in case any republicans think the video is absurdly far-fetched.
https://www.telegraph.co.uk/news/2016/04/14/ted-cruzs-doomed-war-on-sex-toys-and-masturbation/
And that's from the Telegraph which is definitely Right-leaning.

15 hours ago, TheVat said:

 

Is there a version I can see without signing up for Twitter?

3 hours ago, Externet said:

Is there an approximate percentage that tells difference ?

No
Except, I guess, saying "50%" can only be wrong by +/- 50%

On 7/13/2023 at 1:55 AM, iNow said:

These generational caches of information and behavioral narratives like “don’t poke the bee hive” and “avoid eating that mushroom” and “it’s better not to fornicate on ant hills” were sung to each other in songs around campfires.

We still do sometimes; it's very effective.

On 7/8/2023 at 5:13 PM, John Cuthber said:

Alcohol, sunlight, silica and the fumes from diesel engines are known human carcinogens.
Do you suggest that we ban them?

Or do you think we should consider the benefits as well?

I should have mentioned x-rays too.

The carcinogenicity (and other  risks) of metronidazole are still under investigation- as are those with any other drugs in medical use.

https://yellowcard.mhra.gov.uk/


 

3 hours ago, Photon Guy said:

With the hydrogen that's left, how hard would it be to get it to bond with the oxygen that is readily available in the Earth's atmosphere

     Very easy.

A can of compressed hydrogen with a catalyst would be a better weapon than a water supply.

Fat cows bend in angles.
The one I learned for the lanthanides would no longer be considered acceptable in polite conversation.
Incidentally, "tetrel" is a new one for me. When was that coined?
That means we have the noble gases, the alkali metals, the halogens, the alkaline earths, the chalcogens, the pnictogens , the tetrels and "the boron group"

The trivalent ones need better PR.

41 minutes ago, TheVat said:

ESL

English as a second language?

There is no such thing as "American English". There is English; and there are mistakes.

I suspect that a large part of the actual answer to the original question
 

7 hours ago, Genady said:

...why so many native English speakers so often misuse words like their/ there/ they're? 

is a fall in the expenditure on education.

4 hours ago, Externet said:

NO, languages do not evolve. 

Yes they do.

It means "change" not "improve"

Hypochlorite bleach definitely expires.

Also, are you aware of this sort of thing?
https://www.rd.com/list/beauty-products-packaging-symbols/
 

What's special about cancer?
Plenty of drugs have a variety of ways of killing you.
https://bnf.nice.org.uk/drugs/metronidazole/#side-effects

And you need to balance the risk of side effects with the risks of not taking the medication.

Alcohol, sunlight, silica and the fumes from diesel engines are known human carcinogens.
Do you suggest that we ban them?

Or do you think we should consider the benefits as well?

2 hours ago, TheVat said:

  I don't think those who perished will mind if their bits serve a scientific purpose. 

It's a lot easier to ask their next of kin...

2 hours ago, mistermack said:

The volume of air in the sub is fixed,

No, it's not.
Submarines get squashed to a measurable degree- some would say an alarming extent- even when they are working properly.
 

2 hours ago, Genady said:

Did he do it this time to show how much he trusts its safety?

I suspect he did it because he enjoyed it.

2 hours ago, mistermack said:

It seems hardly possible that the sub could descend too fast.

It will if it leaks at all.
 

1 hour ago, TheVat said:

In tooth pulp, very likely.  (I'm a bit late catching up with this thread)

Is there any point?
Has anyone said the victims are not the "right" people?
DNA will confirm the identities of any bits of body that they find.
I guess that's useful in terms of labeling a coffin but I imagine the victims will be considered "lost at sea".

Anyway, I predict further empty speculation.

I see another problem.
Why poison woodlice for fun?

On 6/29/2023 at 9:22 PM, Sensei said:

Losing money from a credit/debit card that has a magnetic stripe (which one doesn't?) is as easy as this guy shows:

About 12 seconds into the video, they guy explains that he says you should keep your cards in sight- which is sensible advice.
But it has nothing to do with RFID, has it?

If someone has your card, it's no longer in the "protective" wallet.

Why did you post that video in this thread?

3 hours ago, PeterBushMan said:

I am sure you know NOTHING about the folder I mentioned.

Nor do you.
Which means that, if Sensei isn't smart, nor are you.

Past evidence suggests that he's smarter than you are.
And, in any event, he's right about this.
 

On 6/30/2023 at 7:14 PM, Sensei said:

his post is too ambiguous.

On 6/24/2023 at 12:08 PM, Alex_Krycek said:

What about "hull integrity"?

Good question.
How do you intend to maintain an air supply and a route back to the surface without it?
Or did you not understand that it was implicit in the requirements I specified?

On 6/26/2023 at 9:38 AM, Alex_Krycek said:

No to mention Elon Musk is on record saying quite nonchalantly "a whole bunch of people will die", in the process of going to Mars.

They already started.
https://en.wikipedia.org/wiki/List_of_spaceflight-related_accidents_and_incidents

So he's just stating the obvious.

On 6/26/2023 at 10:25 AM, StringJunky said:

He's looking to have a cage fight with Zuckerberg.

Just a thought; If A kills B and is subsequently jailed for life for murder, is that a bad outcome?

On 6/26/2023 at 10:02 AM, toucana said:

But if you are going to adopt such a technique, then you don’t do it like this - out in an open warehouse space with a bunch of guys in carpenters aprons, standing on wooden step-ladders, and slopping the gunk on from a tin with paint brushes.

Actually, you sometimes can- as long as you make it 10 times thicker than it needs to be.
For a one-off design, overdoing the glue makes more economic sense than building a clean-room etc.

... just as long as you get the sums correct.

People seem to overlook teh fact that this sub dived successfully before.
The problem wasn't raw strength, but fatigue resistance.

To a very good approximation, nothing ever fails in straight compression.
Failure of stability.... not very rare.

13 minutes ago, StringJunky said:

What spares do you take?

The bits that haven't already been tested by a million game players?

It's a bit beside the point. The game-boy didn't include an "implode" function.
In theory the only things that are "critical" are
  Maintaining air and
   getting back to the surface.
They had at least one "get back to the surface" mechanism that was independent of that controller and the controller had nothing to do with the air supply.

10 hours ago, StringJunky said:

But built to a price, probably not adequate for a mission as critical as that. The price you pay in high-end mission critical equipment is the testing of the individual products. ie The test sampling rate on the production would be much higher than a shop bought controller.

At 20 bucks, and well under a kilo in weight, why not just take a spare?

On 6/20/2023 at 11:53 AM, toucana said:

“It’s got one button, and that’s it. We run the sub with this game controller - It’s made by Logitec, but it’s basically a Sony PS style controller”  he says  -

What could possibly go wrong ?

How many other systems were as well tested as a game controller?

2 hours ago, Alex_Krycek said:

Not hiring 50 year old white guys with decades of submarine experience because they're not "inspirational"

Some people are citing this as an argument against diversity.
Those are the people that don't  realise that "everyone is young" is no more diverse than "everyone is old".
They aren't helping.

 

11 hours ago, toucana said:

The process of conducting an underwater search for a lost submarine has been based on the use of Bayesian Search Theory ever since 1968,

Interestingly, they also searched the surface of the sea quite intensively in spite of  the fact that ... that's not where submarines "should" be.

An application of this algorithm
https://en.wikipedia.org/wiki/Streetlight_effect

1 hour ago, Logicandreason said:

The ramifications are that measurement of light speed is frame dependent.

How come nobody but you has noticed?

8 hours ago, Intoscience said:

To add to the topic I thought I should share with you some real life experience which is happening right now.

The company I work for manufactures and the sells its products 80% directly to the public, 20% wholesale. As a result of increasing costs across the board, material supplies, energy, logistics & significant wage increases. The business is very labour intensive compared to its turn over so contributes to a high percentage of additional incurred cost. The business had no choice but to increase the retail price of the products from 10-20% (product range depending).  Guess what, sales have significantly fallen, both retail and wholesale. The company has now no other choice but to either make redundancies or put the staff on short time working. This is the reality of the economical market across the globe for lots of businesses. 

As from next week I'll be on short time working so earning 20% less. Honestly I would have prefeed the business not to have made the wage increases, kept jobs and people who now face difficult times due to a significant loss in income. 

 

Thank you for your anecdote.
Sorry to hear that the company is struggling.