nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

Child Item

I bet you didnt know that

Cartouche

As people here work in various jobs / professions they might know things from work or study no one here knows yet. this is what this topic is about.

what do you know that we have never heard of?

Eg: you don't need to be great at maths to be an architect

this is obvious to me but everyone says to me "i wanted to be an architect but i was bad at math,i can barely add"

Find more posts tagged with

Quick Links

Comments

Fourier

I'll return to this myself in a week or so, but just to give you something.

pleas advice wrote: »

ah, don't go changing topics when i was just about to ask how do you explain the Casimir effect or Hawking Radiation...

See Arnold Neumaier, Professor of Mathematics and Theoretical physics of the University of Vienna here:
https://www.physicsforums.com/insights/misconceptions-virtual-particles/

That's quite a technical article, but simpler is his stack exchange answer here about the Caisimir effect:
https://physics.stackexchange.com/questions/34049/what-really-goes-on-in-a-vacuum

Arnold Neumaier wrote:

Nothing goes on; the vacuum is completely inert.

Ipso

Capt'n Midnight wrote: »

A slightly more ethical use for the rear end of a civet is in the production of Kopi luwak coffee.

And you don't even have to put the coffee beans in the front end as the civets will do that themselves.

Yeah, I accidentally paid $12 for a regular sized bottle of beer that had poop coffee in it.

Ipso

How do people figure this out in the first place?
Like with almonds, supposedly the wild ancestor was poisonous to humans but how did they figure out that it could end up being edible?

BaZmO*

Historically there are a lot of strange “ingredients” used is making perfume. Ambergris is an interesting one.

It is a solid, waxy, flammable substance of a dull grey or blackish colour produced in the digestive system of sperm whales. Freshly produced ambergris has a marine, fecal odour. However, it acquires a sweet, earthy scent as it ages, commonly likened to the fragrance of rubbing alcohol without the vaporous chemical astringency.

Ambergris used to be very highly valued by perfumers as a fixative that allowed the scent to last much longer, but it has been replaced by synthetic ambroxan. Dogs are known to be attracted to the smell of ambergris and are therefore sometimes used by ambergris searchers.

There are rare cases of lumps of it washing up on beaches.

Capt'n Midnight

Carry wrote: »

The perfume contains civet, a musk, that's being "harvested" from the perineal or anal glands of the animal called civet,

A slightly more ethical use for the rear end of a civet is in the production of Kopi luwak coffee.

And you don't even have to put the coffee beans in the front end as the civets will do that themselves.

Kat1170

Carry wrote: »

Well, it's like with men: Give them the choice of a burger or a sexual encounter - most will glance shortly at the burger and head for the sex

Breakfast in bed, best of both worlds

;):D

The TOTO motorcycle built in Japan in 2010 ran on human waste.

Realt Dearg Sec

Carry wrote: »

Well, it's like with men: Give them the choice of a burger or a sexual encounter - most will glance shortly at the burger and head for the sex

Hmmm, that would depend on the burger. And whether I realistically think it'll still be there in a few minutes.

Carry

gozunda wrote: »

What's wrong with usual eau de herbivore
and the normal bog standard leg of Zebra? Them must be some fancy pants studies ...

Well, it's like with men: Give them the choice of a burger or a sexual encounter - most will glance shortly at the burger and head for the sex

gozunda

mzungu wrote: »

Calvin Klein's Obsession is known to stimulate the curiosity of Cheetahs and Jaguars. It is used by field biologists to attract them to heat-and-motion sensitive cameras.

What's wrong with usual eau de herbivore
and the normal bog standard leg of Zebra? Them must be some fancy pants studies ...

Carry

Forgot to add: On the picture is Obsession for men, which usually contains more of the skunky stuff (for "animalic attraction" or such like).

I was talking about Obsession for women which has a bit less civet but still enough to attract, ehm, at least my sofa tiger.

Carry

mzungu wrote: »

Calvin Klein's Obsession is known to stimulate the curiosity of Cheetahs and Jaguars. It is used by field biologists to attract them to heat-and-motion sensitive cameras.

:eek: I'll never wear that perfume outdoors so (still have a bottle). Who knows, I might attract cheetahs or jaguars....

The perfume contains civet, a musk, that's being "harvested" from the perineal or anal glands of the animal called civet, which is the stuff that attracts other wild cats.

Civet, or musk, is chemically a pheromone with allegedly aphrodisiac properties. It's been used in perfume since perfume exists.

However, today (I think since the end of the nineties) the industry uses artificial musk/civet since the killing or torturing of animals just for their sexual secretion is unethical and frowned-upon.

I'm not sure if the big cats react the same to artificial civet.

Obsession is not the only perfume containing (artificial) civet. Some of the more famous perfumes are Coco by Chanel, Chanel No.5, Shalimar by Guerlain, Magie Noire by Lancome, Diorissimo by Dior, Noir by Tom Ford, Must the Cartier, Aramis among others.

Obsession though is a real strong scent. Whoever uses it should do it carefully and sparingly.

Kat1170

New Home wrote: »

I could understand it if it had been Lynx....

Ipso wrote: »

Or Sex Panther!

Or even a Cougar

Ipso

New Home wrote: »

I could understand it if it had been Lynx....

Or Sex Panther!

Kat1170

pleas advice wrote: »

hmm... so I had to look up the plural of platypus.
platypus comes from the Greek word πλατύπους (platupous), "flat-footed"

Scientists generally use "platypuses" or simply "platypus". Colloquially, the term "platypi" is also used for the plural, although this is technically incorrect and a form of pseudo-Latin; the correct Greek plural would be "platypodes".

so, its like octopus / octopodes

I had a quick look when typing the post into the plural and decided, nope, not going there

New Home

I could have understood it if it had been Lynx....

mzungu

Calvin Klein's Obsession is known to stimulate the curiosity of cheetahs and jaguars. It is used by field biologists to attract them to heat-and-motion sensitive cameras.

pleas advice

Kat1170 wrote: »

Platypus don't have nipples....

hmm... so I had to look up the plural of platypus.
platypus comes from the Greek word πλατύπους (platupous), "flat-footed"

Scientists generally use "platypuses" or simply "platypus". Colloquially, the term "platypi" is also used for the plural, although this is technically incorrect and a form of pseudo-Latin; the correct Greek plural would be "platypodes".

so, its like octopus / octopodes

pleas advice

ah, don't go changing topics when i was just about to ask how do you explain the Casimir effect or Hawking Radiation...

DEFTLEFTHAND

It's customary when visiting the historic Green Mount Cemetery in Baltimore, Maryland to leave a Lincoln penny on the top of John Wilkes Booth headstone.

The only problem is Wilkes doesn't have a headstone, he's buried in an unmarked grave directly behind the obelisk in the centre of the plot. The only place his name appears is on a list of family members interred in the plot which is inscribed into the obelisk.

The headstone people leave the Lincoln pennies on is in fact the footstone of his sister Asia's grave. Unfortunately Asia falls foul of another Baltimore tradition, When people think they're taking a leak on JWB they're in fact taking it on her grave.

Kat1170

Platypus don't have nipples. The female Platypus secretes milk from pores along her stomach and the young lap it up.

New Home

Now, that I can follow! BTW, wasn't that the reason why the terracotta soldiers were made and buried?

Fourier

RIGOLO wrote: »

My good man we cant go have people posting outlandish claims like ' empty space is empty' without challenge.
Before we know it people will start believing that stuff and ignore the prescence of time, gravitational tug, quantum vacumn fluctioations, Wheelers quantum foam among other things all swirling around in this 'empty' space...nothing empty about it dear boy..

Look PM me if you want more details. Wheeler's foam was an idea that has no proof, gravity isn't something that fills up empty space (it's related to time, see #7673) and the point of my initial posts is that vacuum fluctuations don't fill up empty space with matter, that's a common misunderstanding. According to current scientific understanding empty space is empty. PM me for details and I can give you quotes from textbooks.

NewHome wrote:

No, not at all... I can just stop reading (I can't focus on anything at the moment). I'm sure plenty other people can follow you lot, or there wouldn't be such a lively discussion.

Ah no worries! I knew you were messing.

To change the topic, in ancient China it was thought that the dead could sue the living. Xi Mu (303 - 373) was an official to the Han emperor fell on hard times when his wife died. He claims he found out his uncle had been sued in the afterlife by a soldier he had executed and the court had determined his living relatives had to suffer.

Also everything you were buried with was replicated on the other side. The tomb of Lady Dai (~168 BC), wife of a marquis who had helped the Han gain the Imperial Throne, contained 48 suitcases of stuff she wanted to bring.

Decapitation was very rare for this reason in the Han Empire as it was thought to leave you as a head with no body in the afterlife.

The Open Empire, Valerie Hansen (2000)

Carry

RIGOLO wrote: »

This thread has standards to up hold.

uphold, btw. Who defines the standards? The contributors, not one man.

RIGOLO wrote: »

In this day and age of 'fact truth alternate post truth pseudo blah blah '
we need some bastion of fact we can all retire to for respite...We must maintain the credibility of 'I bet you didnt know that'

I wish you would hold up that standard in the politics forum, too.:rolleyes:
The credibility of this thread is high as far as most contributors are concerned. As is the fun factor.
Fourier's contributions are always highly interesting. I would believe him/her anything as he/she proved to be extremely knowledgeable and reasonable.

RIGOLO wrote: »

My good man we cant go have people posting outlandish claims like ' empty space is empty' without challenge.
Before we know it people will start believing that stuff and ignore the prescence of time, gravitational tug, quantum vacumn fluctioations, Wheelers quantum foam among other things all swirling around in this 'empty' space...nothing empty about it dear boy..

I strongly disapprove of your condescending tone and the associated arrogance. Please do not spoil this thread with suggestions that some contributions don't belong here. In the big scheme of things we know nothing, but we learn a little more in this thread and have fun with it.

I'm sorry to be so off-topic, I won't do it again, promise. And I won't reply to any discussion Rigolo might start about it. Contribute with interesting facts, discuss them, but refrain from taking over this thread by chosing who is allowed to say what, according to your "standards".
Thank you.

Working class heroes

Realt Dearg Sec wrote: »

Time doesn't take up space. No more than length takes up width.

You've added an interesting dimension to the discussion....

Realt Dearg Sec

Time doesn't take up space. No more than length takes up width.

RIGOLO

Fourier wrote: »

Ha! Sorry New Home, I'll stop!

Well that's current understanding based on current theories, there is little more I can say. If it helps all I can say is time doesn't fill space (I'm not even really sure what that would mean), it's a different thing. The region between molecules in the upper atmosphere is empty because there is no matter there. That's what current theories say.

This thread has standards to up hold.
In this day and age of 'fact truth alternate post truth pseudo blah blah '
we need some bastion of fact we can all retire to for respite...We must maintain the credibility of 'I bet you didnt know that'

My good man we cant go have people posting outlandish claims like ' empty space is empty' without challenge.
Before we know it people will start believing that stuff and ignore the prescence of time, gravitational tug, quantum vacumn fluctioations, Wheelers quantum foam among other things all swirling around in this 'empty' space...nothing empty about it dear boy..

New Home

No, not at all... I can just stop reading (I can't focus on anything at the moment). I'm sure plenty other people can follow you lot, or there wouldn't be such a lively discussion.

Fourier

Ha! Sorry New Home, I'll stop!

RIGOLO wrote: »

but empty space Im not convinced ... as even within the regions between molecules time still exists ..so how can it be called empty space ...

Well that's current understanding based on current theories, there is little more I can say. If it helps all I can say is time doesn't fill space (I'm not even really sure what that would mean), it's a different thing. The region between molecules in the upper atmosphere is empty because there is no matter there. That's what current theories say.

New Home

RIGOLO

Fourier wrote: »

A more detailed answer.

It's not empty on a large scale, but is on a small scale.

It is hard to say if dark energy "takes up" space or exactly how it fills space as we know little about it. As I said there is hydrogen (and more rarely helium etc) dust in intergalactic space. This dust is essentially isolated atoms, so between those atoms there is empty space. There's no scientific principle preventing empty space. Even on Earth in the upper atmosphere the regions between molecules would be empty.

This book and many others claim particles pop in and out of existence from empty (or even filled) space. This is false.

I was never debating this point 'This book and many others claim particles pop in and out of existence from empty (or even filled) space. This is false.'

but empty space Im not convinced ... as even within the regions between molecules time still exists ..so how can it be called empty space ...