I bet you didnt know that

Fourier

Just to help out.

RIGOLO wrote: »

My usage of (big C and small c) to explain how there are multiple infinities stems from my recollection of my college maths-physiscs text book of more than 30 years ago.
I expect the author was using the letter C as it all stemmed from Cantors proof of an infinite number of infinities of infinitely different sizes... diagonialisation my dear boy

The two infinities you are thinking of are Aleph_0, the size of the whole numbers and fractions (rationals) and Aleph_1 the next biggest infinity and as you said it keeps going, Aleph_2 is another infinity etc

As you said C is used for the real numbers, this is because it is impossible to prove how big they are, it has actually been proven to be impossible to prove.

Professor Moriarty

RIGOLO wrote: »

I remember a quote attributed to the great 90's Italian cycling sprinter (playboy) Mario Cippolini when asked after winning some race, what was the first thing he would do when he got home .
His reply was.. "The first thing I will do when I get home is make love to my wife, and the second thing I will do is put down my suitcases "

Jimmy Floyd Hasselbaink (a former Chelsea striker):

"People say that scoring a goal is better than having sex. It's not, they're just having bad sex."

Sleepy

Wibbs wrote: »

Pregnancy and childbirth before the modern age was an extremely hazardous process for women. Depending on a mother's status the chances of death were 2-5% per birth. Given the average woman was around 15 at marriage** she could have at least 8 or 10 pregnancies in her life, with each one shortening the odds of her survival. High born women(more like girls in our point of view) with stuff to leave behind wrote their first last will and testament upon learning they were up the duff. High born women often had more kids and were at greater risk than poorer women, as they usually employed wet nurses and didn't breastfeed themselves. Breastfeeding dampens down fertility, so poorer women were usually better off in that sense. Plus the pressure on richer women was higher as they were required to produce more heirs. And since childhood mortality was scarily high(a quarter of newborns didn't make it to ten), they were baby factories.

As I recently learned during the Guinness Storehouse tour, Olivia Whitmore (Arthur's wife) gave birth to 21 children, of which only 10 reached adulthood. She would have spent over 16 years being pregnant.

jmayo

mzungu wrote: »

In the space of a mere 29 weeks, Harry Truman went from senator (a role he held since 1932), to Vice President, to President, to dropping the first a-bomb.

And they used a Boeing B-29 Superfortress bomber.

Coincidence ?

Professor Moriarty wrote: »

Jimmy Floyd Hasselbaink (a former Chelsea striker):

"People say that scoring a goal is better than having sex. It's not, they're just having bad sex."

One of the funniest footballer or sportsmen one liners has to be Peter Crouch who when asked.
"What would you be if you weren't a footballer?”
answered ...
"A virgin"

Skylinehead

jmayo wrote: »

And they used a Boeing B-29 Superfortress bomber.

The B-29 was so innovative and complex (pressurised cabin, massive range, remote-controlled turrets, altitude capabilities such that Japanese fighters simply couldn't reach them) that the cost of developing those planes actually outstripped that of the Manhattan Project itself.

RIGOLO

Nixonbot wrote: »

The B-29 was so innovative and complex (pressurised cabin, massive range, remote-controlled turrets, altitude capabilities such that Japanese fighters simply couldn't reach them) that the cost of developing those planes actually outstripped that of the Manhattan Project itself.

At one time the Boeing Aircraft manufacturing building/hanger where they assembled their planes was the largest man made building in the world.
It was so vast in fact, that it would periodically generate its own weather resulting in rainfall within the hanger and them having to cover the planes. I dont know if it still is or does, its been a long time since I was there.

Also outside the building there used by a 737 (if i recall correctly) with the wingtips bent over so they were touching each other above the fuselage, all to demonstrate the robustness of the riveting.

Planes really are marvels of man made engineering.

Skylinehead

RIGOLO wrote: »

At one time the Boeing Aircraft manufacturing building/hanger where they assembled their planes was the largest man made building in the world.
It was so vast in fact, that it would periodically generate its own weather resulting in rainfall within the hanger and them having to cover the planes. I dont know if it still is or does, its been a long time since I was there.

Also outside the building there used by a 737 (if i recall correctly) with the wingtips bent over so they were touching each other above the fuselage, all to demonstrate the robustness of the riveting.

Planes really are marvels of man made engineering.

The Everett factory is still the largest building in the world!

KevRossi

Nixonbot wrote: »

The Everett factory is still the largest building in the world!

And Tesco in Donabate is the 9th largest building on the planet.

By volume - Source: https://en.wikipedia.org/wiki/List_of_largest_buildings

sbsquarepants

RIGOLO wrote: »

At one time the Boeing Aircraft manufacturing building/hanger where they assembled their planes was the largest man made building in the world.
.

Largest man made building? Is there a bigger one built by monkeys or something?:D

RIGOLO

sbsquarepants wrote: »

Largest man made building? Is there a bigger one built by monkeys or something?:D

Yes that was intentional ..
It was 'man' made .. not a single woman was involved in the making of it.
I needed to be specific .

oh dear I hope that comment doesnt appear on my social media account and will affect my career in 20 years time, there goes my chances of being on the Supreme Court of the USA ...

sbsquarepants

KevRossi wrote: »

And Tesco in Donabate is the 9th largest building on the planet.

By volume - Source: https://en.wikipedia.org/wiki/List_of_largest_buildings

Is it just me or is that list in the wrong order?

No. 5 should be in 4th
No. 6 should be in 5th
No. 7 should be in 6th

Agent Smyth

KevRossi wrote: »

And Tesco in Donabate is the 9th largest building on the planet.

And people wonder why Tesco HQ often refer to Ireland as "Treasure Island"

RIGOLO

sbsquarepants wrote: »

Is it just me or is that list in the wrong order?

No. 5 should be in 4th
No. 6 should be in 5th
No. 7 should be in 6th

yes but were they 'man' made ... ....

cdeb

sbsquarepants wrote: »

Is it just me or is that list in the wrong order?

No. 5 should be in 4th
No. 6 should be in 5th
No. 7 should be in 6th

The conversions aren't consistent in some cases; I'd say there's a typo in the m3 or cu ft figures somewhere

New Home

In its infinite wisdom, Facebook has recently censored for indecency/pornography the photos of a 30,000 y.o. sculpture, the Venus of Willendorf, as well as the photo of "Psyche revived by Cupid's Kiss", a sculpture by Antonio Canova (one version is in the Louvre, the other is in the Hermitage); it has also censored, among others, works of art such as La Marianne (in the Delacroix painting), the bronze sculpture of Neptune in Bologna, the statue of the Little Mermaid, Caravaggio's Cupid, Ruben's nudes, etc.

IvyTheTerrific

New Home wrote: »

In its infinite wisdom, Facebook has recently censored for indecency/pornography the photos of a 30,000 y.o. sculpture, the Venus of Willendorf, as well as the photo of "Psyche revived by Cupid's Kiss", a sculpture by Antonio Canova (one version is in the Louvre, the other is in the Hermitage); it has also censored, among others, works of art such as La Marianne (in the Delacroix painting), the bronze sculpture of Neptune in Bologna, the statue of the Little Mermaid, Caravaggio's Cupid, Ruben's nudes, etc.

There's an ongoing case in France against Facebook after they suspended the account of someone who posted The Origin of the World by Courbet.

JRant

RIGOLO wrote: »

At one time the Boeing Aircraft manufacturing building/hanger where they assembled their planes was the largest man made building in the world.
It was so vast in fact, that it would periodically generate its own weather resulting in rainfall within the hanger and them having to cover the planes. I dont know if it still is or does, its been a long time since I was there.

Also outside the building there used by a 737 (if i recall correctly) with the wingtips bent over so they were touching each other above the fuselage, all to demonstrate the robustness of the riveting.

Planes really are marvels of man made engineering.

That's actually a common enough occurrence. Large shopping malls and buildings in Suadi Arabia have experienced the same issues whereby clouds form inside and it starts to rain. When you have a large volume of air inside a building, say at 23°C and the outside air with a dew point above that and a high relative humidity the conditions are just right. It can be fairly tricky to get the HVAC system working just right to prevent any of this outside air getting in while maintaining the temperature inside.

pleas advice

I always thought the speed of light was only circa 299,792,458 metres per second...

mzungu

A volcanic eruption at Laki, Iceland, on June 8th 1783 had wide ranging impact across the world, but in particular Europe and North Africa. The eruption itself did not stop until the 7th February 1784, but most of the lava was ejected in the first five months.

In Iceland, 25% of the population died due to a combination of famine and fluoride poisoning. Roughly 80% of sheep, 50% of cattle and 50% of horses died because of dental fluorosis and skeletal fluorosis from the 8 million tons of hydrogen fluoride that were released.

There is evidence it played havoc with the Indian and African monsoon season. For example, the Sahel had between 1 and 3 millimetres less daily precipitation than usual. One byproduct of this was a low flow in the River Nile. This caused a famine in Egypt leading to the death of one sixth of the population.

In Europe, an estimated 120,000,000 long tons (120,000,000 t) of sulphur dioxide was emitted. This would be about three times the total annual European industrial output in 2006. The difference being that it was delivered to higher altitudes, hence making it more persistent.

The summer of 1783 was the hottest on record and a rare high pressure zone over Iceland made the winds blow south east. The poisonous cloud drifted to Bergen in Denmark–Norway, then spread to Prague in the Kingdom of Bohemia ( today the Czech Republic), to Berlin, to Paris, to Le Havre, and then Great Britain. The fog was so thick that boats stayed in port, unable to navigate. The sulphur dioxide gas resulted in the deaths of an estimated 23,000 British people. Weather reports from the time state that the hot weather brought thunderstorms with large hailstones that killed cattle. The 1783-84 winter was severe, there was 28 days of continuous frost and the weather alone accounted for a further 8,000 deaths during this time. Once the spring arrived, the thaw caused major floods on mainland Europe.

In North America, the winter of 1784 was the longest and one of the coldest on record. To date, it was the longest period of below-zero temperatures in New England, with the largest accumulation of snow in New Jersey, and the longest freezing over of Chesapeake Bay, where Annapolis, Maryland is (then the capital of the United States). Incidentally, the weather delayed Congressmen in coming to Annapolis to vote for the Treaty of Paris, which formally ended the American Revolutionary War. The South was hit by a huge snowstorm and the Mississippi River froze at New Orleans and there were also reports of ice floes in the Gulf of Mexico!


Laki today...

New Home

Capt'n Midnight

pleas advice wrote: »

I always thought the speed of light was only circa 299,792,458 metres per second...

It used to be plus or minus 1.6 meters per second.

But they sorted out that by re-defining the meter as 1/299,792,458 of the distance light travels in one second.

So no more circa, now it's exact. By definition.

Science marches on / engineers couldn't be arsed resolving the uncertainty. Take your pick.

y0ssar1an22

Capt'n Midnight wrote: »

It used to be plus or minus 1.6 meters per second.

But they sorted out that by re-defining the meter as 1/299,792,458 of the distance light travels in one second.

So no more circa, now it's exact. By definition.

Science marches on / engineers couldn't be arsed resolving the uncertainty. Take your pick.

this is more of a 'i hope you can make me know that'.

you seem to be in the know regarding this, and its something i dont understand.

2 cars coming together at 20m/s. they are getting closer at a speed of 40m/s.

2 cars doming together at the speed of light. why dont they get closer at a speed of twice the speed of light?

Capt'n Midnight

New Home wrote: »

http://funsubstance.com/uploads/preview/492/492890.jpg

If you try to separate water from alcohol by distilling it you can't.

Because they form an azeotrope, a mixture that boils at a lower temperature than either water or alcohol.

To get a higher % of alcohol you need something that will adsorb the water. Perhaps Calcium Chloride. But it's not very tasty so don't.


There is a chemical that when water is added to it splits into alcohol and carbon dioxide. But it's not very tasty so don't.

cdeb

y0ssar1an22 wrote: »

this is more of a 'i hope you can make me know that'.

you seem to be in the know regarding this, and its something i dont understand.

2 cars coming together at 20m/s. they are getting closer at a speed of 40m/s.

2 cars doming together at the speed of light. why dont they get closer at a speed of twice the speed of light?

I think there's whole books written on this; it'd be hard to explain it in a single post! Possibly Fourier can explain in more detail, but the main thing is that the speed of light is not absolute. It is actually with relevance to the observer.

So your case of 2 cars coming together at 20m/s; they don't appear to each other to be coming closer at 40m/s. It's actually very very very slightly less, but utterly imperceptible. This difference would grow as the speed increased. At close to light speeds, it is actually possible for the order in which things are seen by an observer to be wrong according to those to whom it is happening.

We Have No Idea is a fun book which contains a far more detailed and better explanation of the above in comic form with cats.

the purple tin

We are one of the few mammals that sneeze through the mouth.

sbsquarepants

Capt'n Midnight wrote: »

If you try to separate water from alcohol by distilling it you can't.

Because they form an azeotrope, a mixture that boils at a lower temperature than either water or alcohol.

To get a higher % of alcohol you need something that will adsorb the water. Perhaps Calcium Chloride. But it's not very tasty so don't.


There is a chemical that when water is added to it splits into alcohol and carbon dioxide. But it's not very tasty so don't.

Do you mean completely or what?

Surely the above is exactly what happens in a still - you heat it up, the alcohol evaporates out (partially anyway) and then you condense it back into a more alcoholic liquid.

Lather rinse repeat till you get the desired strength, no?

There is also a cold version where instead of evaporating off the alcohol, you can freeze out some the water, leaving a more alcoholic liquid behind - some extra strong beers are made this way.
I'm not sure of the figures but it certainly sounds like a much less efficient method.

ohnonotgmail

sbsquarepants wrote: »

Do you mean completely or what?

Surely the above is exactly what happens in a still - you heat it up, the alcohol evaporates out (partially anyway) and then you condense it back into a more alcoholic liquid.

Lather rinse repeat till you get the desired strength, no?

There is also a cold version where instead of evaporating off the alcohol, you can freeze out some the water, leaving a more alcoholic liquid behind - some extra strong beers are made this way.
I'm not sure of the figures but it certainly sounds like a much less efficient method.

Tactical Nuclear Penguin beer is distilled using freeze distillation. It is 32% abv and tastes like furniture polish.

Fourier

y0ssar1an22 wrote: »

2 cars doming together at the speed of light. why dont they get closer at a speed of twice the speed of light?

So just a brief thing first, two cars can't come together with each going at the speed of light, as nothing with mass can travel at the speed of light.

However your point does work for two cars each going at 90% of the speed of light approaching each other. You'd think from their point of view the other is approaching at 180% the speed of light, just like the cars each going 20m/s see each other coming at 40m/s. However they don't, they see each other coming at 99.4% the speed of light, far off the 180% you'd expect.

This is basically due to time dilation, when they go as fast as 90% of light speed from their perspective time slows down and so everything seems to be going slower.

In fact this is how Einstein arrived at Relativity. He simply said "What has to happen to prevent two people ever seeing the other going beyond the speed of light". It turns out time has to slow down to prevent it.

sbsquarepants

ohnonotgmail wrote: »

Tactical Nuclear Penguin beer is distilled using freeze distillation. It is 32% abv and tastes like furniture polish.

Catchy name:D

keano_afc

ohnonotgmail wrote: »

Tactical Nuclear Penguin beer is distilled using freeze distillation. It is 32% abv and tastes like furniture polish.

I was sitting in the Salt House in Galway one evening and we were talking to the bar staff about the bottle of TNP they had behind the counter. While we were mid-conversation, an American tourist came in and bought it. He went straight to the bar, offered €70 and away he went. I always wondered what kind of evening he had after.