Not all facts seem intuitive. Some take people by surprise or feel strange even after knowing them for a while. The reasons for this may vary from limited knowledge of the area, something having very different features from other things of a similar kind, to our senses perceiving something in such a way that it is tempting to the mind to draw some false conclusions, as is the case with various optical illusions, such as one line looking shorter than the other when that isn’t the case. People are sharing these kinds of facts, answering one Redditor’s question: “What’s something that sounds completely illogical but is actually correct?”
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Aluminum is infinitely recyclable and one of the worlds most recycled metal
Aluminum is used in US if i'm not mistaken. Aluminium is used by the rest of us outside US.
Load More Replies...Significantly so. Refining aluminum ore is a really energy intensive process. Recycling it only uses about 5% of that energy.
Load More Replies...Another fun fact about aluminum is that it used to be rare and expensive before some advances in chemistry. Napoleon had an aluminum dining set to show off his wealth.
What if it is covered in grease? Serious question edit: typo
No. It needs to be cleaned first then scrunched into a ball. (I googled your question)
Load More Replies...But aluminum foil is not recyclable. At least our recycling service doesn't accept it.
Ours does, but you have to make it into balls about tennis ball size because otherwise they don't go through the machines well.
Load More Replies...Besides, it´s cheaper to recycle than producing aluminium from bauxite
Saudi Arabia imports camels from Australia
at first this sounds bonkers, but then you realise the quality (for example the grain size) of sand is important to make concrete.
Load More Replies...All because our early intrepid colonialist explorers imported them to cross our red centre...then cut them loose. Thanks for nothing Burke and Will's. Camels are reaching plague proportions and impacting out native wildlife by sucking up already limited bush plants.
The more I learn about the kingdom of Saudi Arabia, the more I realize it's a massive joke of a facade.
So there are camel breeders in Australia? Or are they just roaming around the outback?
They were brought over to Australia in 1840 to travel from South to North of Australia because they were thought to be able to ensure the conditions. Along with the camels, men from Afghanistan immigrated here to ride the camels. At the end of their 'job', the camels were meant to be s**t, but no one did, so they started breeding and we now have over a million feral camels in Australia.
Load More Replies...Australia has massive herds ofbwild camels. Imported from afghanistan to use to build telegraph line across country. Then used in ww1. Camels escaped and bred.
Yet there are still huge populations of feral camels in the outback that have to be culled. So many animals were brought to Australia because of some settler's bright ideas, but ended up being a scourge on the land.
Sloths can hold their breath under water longer than dolphins
I once read they move much faster in water. This fact is really interesting, I'm curious how often they need to hold their breath.
Load More Replies...This is so they can hide longer from predators, mostly. They're actually really fast swimmers, compared to their on-land speed capabilities (x3). They can hold it for up to 40 mins, because they can slow their heart rate. But it's usually only about 20 mins. That's long enough to hide perfectly still and quiet away from a predator, or cause the critter to get bored waiting for a sloth sized meal.
On deep dives. The longest I know of is 13.8 minutes.
Load More Replies...Human unborn babies can hold their breath for nine months, which is quite a feat.
Mail is still delivered via donkey to a place at the bottom of the Grand Canyon.
The pony express is still up and running too. You can look at their website to see how to deliver mail with them. They're still a federally funded program
Phantom Ranch. I hiked down and stayed the night many, many years ago. I had no idea just how gorgeous the Grand Canyon was until I hiked down and back up. So many amazing things you can't see from the rim.
No, donkeys (or is it mules?) do bring supplies down to Phantom Ranch, but I think this factoid is referring to Supai, a Havasupai village.
Load More Replies...Ah, so that's what the tour guide meant when he said about going down on a donkey! My bad...
The double-slit experiment in quantum physics, where you're firing electrons at a barrier with two slits. Logic suggests you should see two lines on a screen behind the barrier, but instead, you get a pattern like waves interfering with each other, implying each electron goes through both slits simultaneously.
Yet, if you observe which slit they go through, the electrons revert to acting like particles, forming only two lines, as if they 'know' they're being watched. It's a mind-bending phenomenon that sounds illogical but is scientifically proven.
I tried to get a gist of quantum physics because of a book I was writing. It's the most bonkers thing imaginable. Infinite respect for people who study it in-depth.
I learned about quantum mechanics for the same reason :)
Load More Replies...Yeah, I hate the interpretation that a conscious observer needs to watch for it to happen. Not the people who believe its fault, but the commonly told version’s fault.
Load More Replies...Great fact, but can we start saying "measuring by interacting a tiny bit" instead of "observing" when it's about quantum stuff? The latter is so unclear as to what happens. And it realy makes it sound like some magical effect.
It's the simulation reducing processing power for unobserved things. We need to stop looking at so many things so we don't end up crashing the universe's server.
Watch a video about it on YouTube, it's truly fascinating. There are so many videos about it at all different levels of understanding, even for simpletons like myself! Just ignore the comments under the video from people that suggest this is evidence we live in a simulation- fall down that rabbit hole and you'll emerge 72 hours later questioning everything you know to be true and it takes a while to revert back to logic!
Load More Replies...It has nothing to do with physically observing anything. It has to do with the fact that in order to observe anything there needs to a measurement of light (protons) and it is the protons interacting with the electrons that causes the phenomenon.
Sharks existed before Saturn’s rings did.
Each year, the number of people killed by sharks averages only a few dozen more than the number of people killed by Saturn's rings.
Well I'd certainly HOPE not any one individual but the oceans are pretty unexplored so...
Load More Replies...Who was here to write that down, Saturns rings are 100 million years old.
You hear your own voice differently than others, that's why a lot of people get shocked when they listen to their own recordings.
Yeah my voice sounds deeper to me in my head than in real life. I’m always taken aback by how much more high-pitched and feminine it really is in recordings.
Load More Replies...A lot of my job is answering phones and oh do I HATE when I echo back to myself!
There’s nothing worse then hearing your own voice - it’s just so much cringe.
I actually really like hearing my own voice, it sounds very nice
Load More Replies...I'm usually shocked when I hear things I've said, but then so is everybody else.
When Joan Crawford transitioned from silent pictures to "talkies," she said, "I sound like a man," after hearing her voice onscreen the first time.
I've been told by many people I have a very good phone voice. (Lots of customer service jobs and hard of hearing relatives so I'm told I enunciate more than most people) But when I hear my own voice I think it's nasally and annoying.
A few years ago my wife worked at the local weekly newspaper. One of her co-workers had also worked for the AM radio station I grew up listening to. I called her work one day and he answered the phone. It threw me off for a second because I thought I was listening to the radio.
Load More Replies...For me it makes me feel like my voice is higher than it is
Load More Replies...I honestly hate the sound of my voice in recordings, because it's so different.
Water expands when frozen but almost everything else contracts when frozen
It's the only non metallic substance to do so I believe. I think iron does also, as does silicon.
Silicon is not a metal, either. It is a metalloid, on the border between metals and nonmetals on the periodic table.
Load More Replies...It's because of the hydrogen bonds in the water. When frozen, water molecules rearrange and form hexagonal structures, hence expanding the volume they actually occupy, on a macro scale this means air gets trapped inside ice and allows ice to float. Reason why snowflakes are always hexagonal too
It's crazier than this: life in the universe DEPENDS on the fact that ice floats; it floats because it expands when frozen. But it's the only non-elemental substance that does, besides extremely rare, exotic substances. (Elemental substances that expand when frozen include Germanium, certain forms of Silicon, Plutonium and Antimony.)
Ice gets less slippery the colder it gets. Around the freezing point (30 to 32F or 0 to -1C) it will dump you on your tailbone. At -40 (either scale) it acts more like rock.
Cashews grow on the outside of a cashew apple
And if I remember properly, raw cashews that are still in their shells contain toxin.
The cashew apple is a light reddish to yellow fruit, whose pulp and juice can be processed into a sweet, astringent fruit drink or fermented and distilled into liquor.[3] -- wiki
Load More Replies...And the fleshy part is edible. However, it goes bad quickly, so isn't utilized as a separate food source outside of the plant's growing range.
Well, in my old country (Brazil) it was a common occurrence when it was in season, and the shelf life was on par with other fruits with thin skin, like tomatoes.
Load More Replies...It is my favourite fruit, and I'm very sorry that I can't get it on my new country.
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Inflammable means flammable
People also ask What is difference between flammable and inflammable? Flammable and inflammable do not mean the same thing. If something is flammable it means it can be set fire to, such as a piece of wood. However, inflammable means that a substance is capabble of bursting into flames without the need for any ignition.
Nope, not true, sorry everyone who upvoted. Urban legend in an attempt to make sense of this but they really ARE synonyms. They came into english use at different times but means the exact same thing. That something is easy to set fire to. If you think about it, it makes no sense that something is capable of bursting into flames without any ignition. It always needs some kind of ignition even if it is highly flammable. This is not the uses for flammable and inflammable. They mean the same, it really is that way. https://www.merriam-webster.com/grammar/flammable-or-inflammable
Load More Replies...No it doesn't. Inflammable means "can catch fire without an external source of ignition", flammable means "you can set fire to it".
OK here is the online OED definition. flammable, adj. = inflammable, adj. Revived in modern use: cf.flammability, n
Load More Replies...Please, people! Dictionaries still exist. How did everyone go off on such bizarre tangents? It's a very simple task to look the word up. *facepalm*
Indeed. State of the world... They need a yt video for the most basic stuff instead of just looking it up in 5 seconds. Can only hope they are also too dumb to reproduce, but sadly that's usually the other way around :/
Load More Replies...Flammable and inflammable have distinct meanings. Flammable indicates that something can be ignited, like wood. In contrast, inflammable implies a substance's ability to burst into flames spontaneously, without requiring ignition.
Inflammable means "can", hypergolic means "will"
Load More Replies...It does, but "inflammable" is centuries older. Flammable is only 18th century. Think of the verb "inflame".
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There is a nerve that connects your brain to your larynx (voice box), but first it goes down your neck, into your chest, and under your aorta before coming back up.
Giraffes also have it despite the length of their necks.
I agree that evolution is true, but I'd be careful with the word "proof". Rather I'd say "evidence".
Load More Replies...A nerve so long and convoluted doesn't seem like it could ever fit into the category of Intelligent Design.
Humanity is not an example of intelligent design. I don’t care what the Christians say
Load More Replies...They also have the same number of vertebrae in their neck as humans, I think. Crappy memory.
I've always suspected that my brain and my speaking organs were only distantly connected,
This is why some lung cancers present with hoarse voice. The nerve goes into the chest and the lung cancer invades through and damages the nerve making the voice hoarse. So if someone presents with a hoarse voice for more than 3 weeks you always do an urgent chest X-ray
The US Army tried a "Camel Corps" in the Southwest, in the early 19th century, mostly as pack animals or using for mail service, as far West as southern California; when the Civil War interrupted their experiment, they sold the camels off, but some escaped. As a result there were feral camels at one point in the Angeles National Forest.
I heard they tried to breed to ensure their survival, but they just couldn't get over the hump.
It was the idea of the then Secretary of War, Jefferson Davis. And we all know how well his plans turned out.
The original camel corps, under Abraham Lincoln ( the camels were a gift from a shiek who thought camels would work well in the American southwest), who sent his own camel master along, a man called Hadj Ali. There is a folk song called Hi Jolly that tells all this
The UK had one too, my Great Grandfather was in it! https://en.wikipedia.org/wiki/Imperial_Camel_Corps
Do a search on 'HI Jolly.' That's what they called the handler because they couldn't pronounce his name.
And Beale AFB in Northern CA was named after the commander of the Camel Corps.
Both the moon and Sun are about 400 times farther from Earth than the sizes of their respective diameters. This means that the moon will block out, or “eclipse,” anything behind it that has the same ratio. This is the “cosmic coincidence” that makes solar eclipses possible.
Luna used to orbit a lot closer. It is gradually moving away from us. Eventually the eclipses will not be total. Not in our time, however.
Remember than one time when we were around 6 or 7 years old and we were generally depressed because the sun's going to explode in 5.5 billion years?
Load More Replies...Because of the orbits (earth-sun, as well as moon-earth) are not have a perfect circular orbit this is not 100% correct. Their orbits are elliptic, therefor we have annular eclipse as well att total eclipses.
No other planet or moon in our solar system can produce this effect, either!
Nope. The moon's diameter is 2160 miles, and it's 239,000 miles away,about 111 times its diameter. The sun's diameter is 865,370 miles. Its distance of 93 million miles is about 107 times its diameter. What does have a ratio of about 400:1 is the diameters (2160*400=864,000), and the mean distances (238,855*400=95,542,000). The result is that the angular diameter of the moon is almost exactly the same as the angular diameter of the sun. Because both distances vary sometimes the apparent diameter of the moon is big enough to completely block the sun's disk (causing a total solar eclipse) and sometimes it's a tiny bit smaller, causing an annular eclipse. Every once in a while the distances are almost exactly at the point where the apparent sizes match perfectly, so that there's a total eclipse where it's visible around noon(ish) but an annular eclipse where it's visible shortly after sunrise or shortly before sunset, because those places will be farther away from the moon. Untitled-6...f22948.jpg
This is also the only moon and planet in our solar system that does this.
Not to be a jerk, but isn't this simply the concept of "larger objects seem smaller when they're farther away"?
Sort of. The important part is that being about 400 times larger than the moon *and* 400 times farther away means the apparent size of the sun is almost exactly the same as the apparent size of the moon. The OP gets the details wrong. When the moon was closer to Earth it's apparent size was even bigger so total eclipses were more common, but perhaps less spectacular (not that anyone was around to see it) because the coronasphere would also have been eclipsed for much of the duration.
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Spaces between words weren’t introduced until the 7th to 9th centuries, with more widespread adoption occurring in the 10th century.
This is not completely true. Word spacing for writing Latin and Greek was introduced during this time period, and that influenced everybody who uses the Latin font or derivative, as we do. However, using spaces between words goes all the way back to Akkadian cuneiform, and is a feature of other scripts like ancient Hebrew and Arabic that were (probably) influenced by the Akkadian script.
That is an interesting thing. I have visited Thailand but I can't read the language so didn't notice since I could only read signs that were in English.
Load More Replies...We have an old stone in Denmark from mid ninehundreds that doesn't seem to have spaces between words. But of course it is written in runes. That might make a difference.
That seems to counter the belief that our ancestors were ignorant but not stupid. Did they also run all the words together when speaking, and would we ever have a way to know?
Back when sending a text message cost like $0.09 each time, you'd squeeze in every letter you could. And it would infuriate me so much to get a response like "ok" back.
.....and you'd be using T9 so you worked extra hard for your messages!
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It took decades after the invention of the can to invent the can opener.
The first cans were made of wrought iron (like fences) and lined with tin. The suggested method of opening (according to the manufacturer) was a hammer and chisel.
It's hard to imagine what would have caused people to invent the can opener before the can.
It took a few centuries to think hanging eyeglasses on ears.
True. Interesting article about the origins of both cans and openers here: https://www.smithsonianmag.com/smart-news/why-can-opener-wasnt-invented-until-almost-50-years-after-can-180964590/
Canned foods were invented because Napoleon."This process was developed by Nicolas Appert of France during the Napoleonic Wars. In 1795, Napoleon's government offered an award of 12,000 francs for the invention of a food preservation method suitable for sustaining large quantities of French troops both on land and at sea."
Another case of war leading to invention of items other than weapons.
Load More Replies...I saw that if you're ever in a situation with cans and no opener, you scrape the top of the can repeadly on concrete or rock and then it will open with a squeeze. Good to know.
One day on Venus is longer than one year on Venus.
To be specific, one day on Venus lasts 243 Earth days, while one year on Venus takes only about 225 Earth days. Meaning it travels around the sun faster than it rotates on its own axis.
Thank you for the explanation. My head was starting to hurt.
Load More Replies...With some of the staff meetings I've attended, I've experienced the same thing on Earth.
Meaning: It's very difficult to celebrate birthdays and new year on Venus.
And I thought working 9 to 5 was a drag. Those Venusians must go spare watching the clock tick over so slowly
Also, Venus rotates clockwise on its own axis. So the sun rises in the West, and sets in the East.
We live closer in time to the reign of Cleopatra than she did to the building of the pyramids.
Cleopatra ruled Egypt at the very end of true Egyptian history. After the time of Alexander the great. She was Macedonian Greek by heritage.
Can we please get some new factoids? Repeating the same ones endlessly is just lazy
I agree with you. I don't know why people down voted this.
Load More Replies...Mine too! I've never met anyone that even knew his name before. I have his Pandora's Box as my cell phone home screen and his Circe Invidiosa as my lock screen.
Load More Replies...So she was close in time to the founding of Egypt ( ca.3150 BC) as we are today to the destruction of Troy (ca. 1120 BC)
If you have 23 people together in a room there is a 50% chance that 2 of them share a birthday (same day and month, not necessarily the same year).
There is a 100% chance that while you're busy doing statistics, someone eats your cake.
You underestimate my ability to do stats while eating cake.
Load More Replies...A stat beloved of maths teachers everywhere. It's not 50%, it's fractionally better than that.
I share birthday with my mother. We're often in the same room just to skew the statistics...
My sister was born on my mother's birthday and her son was born on mine. I know it's not that weird statistically but it feels like it should be!
Load More Replies...Surely it depends on what time of year people are born. At school, several of my classmates, out of a class of 30, shared the month of May for their birthday, including three sharing the same day. I was born in the third week of November and no one in my class had a birthday in that month, let alone shared an exact day.
May is a very popular month! For some reason, November or December tend to be here as well.
Load More Replies...I remember the birthday paradox, it's a simple joint probability study of statistical perspective. The perspective you have to consider is everyone else's birthday, not just your own. The chance of someone sharing a birthday with you is not not likely because you'll have 365.25 - 22 = 343.25 possibilities unaccounted for, but the chance of 2 people sharing a birthday is, in fact, 50%.
But you need 366 people to have 100% chance of two people having the same birthday.
I'd think 367. And even then, it may not be enough. Leap years mess things up.
Load More Replies...If you test this theory, you are setting yourself up for identity theft.
Hmm, did you know that technically speaking, a strawberry isn't a berry, but a banana is? Sounds weird, but it's true!
And a peanut is not a nut. (Edited. Thank you Impasta) And Stonehenge is not a henge. Meanings of words change over time, more so than names.
And potato is not a *root* vegetable, it's a part of the stem that forms the tubers..
Almonds and pistachios are not nuts, but are considered stone fruit, or drupe. We don't eat the flesh, or fruit, but we eat the stone, or seed, of the fruit.
If your mayonnaise is too thin add more oil to thicken it. Emulsions are weird.
every damn time I have to trick my mind to do it..."it's watery, I should add egg... no wait... oil. oil it is"
And this is because mayonnaise only contains three ingredients: egg whites, oil, and an acid (like lemon juice or vinegar). You can add other ingredients (mustard is a popular one), but those first three are all you need to make it yourself.
Egg yolks. It might work with whites - I've never tried - but it's traditionally made with yolks.
Load More Replies...eww that's sounds like it would taste gross. Does it still taste the same?
When magnesium is burned, the ashes weigh more than the magnesium.
Because you're adding Oxygen. The ash is Magnesium Oxide. But some mass will be lost as smoke so will only work in a closed environment.
So the mass converted to energy is less than the mass converted to the oxide.
That your skin lacks the receptors to feel wet.
That strange feeling when you use dish gloves in liquid. Your hand feel like they are wet when they are not.
Yup that’s why if you step on something cold metal it can feel wet (I’ve had many oh-no-I-stepped-in-cat-barf panics because of a coin or something).
There are amny more than 5 senses. For example, we have mechanoreceptors in our skin. luckily, their input can be ignored by your brain. This is why you don't always feel clothing while you are wearing it. That would be maddening if you did.
Wait...is that why really cold things sometimes feel wet??? My mind is blown.
Moisture is the essence of wetness and wetness is the essence of beauty.
The western end of the Panama Canal is the Atlantic Ocean and the eastern end is the Pacific Ocean.
To add even more precision, the northwestern end is the Caribbean Sea.
Load More Replies...I think that seems strange to Americans because we (wrongly) think South America is directly below North America. It's more to the South East.
that's not why, it's because while most central American countries form a simi straight line from North West to South East, Panama goes North East before curving back South East and connecting to South America, which is what causes the direction of the canal to be like that, however most people don't think of that northeasterly curve in Panama
Load More Replies...Just googled this because confusion. The canal is not straight it’s diagonal. And at the thinnest point in the stretch of land. So yes it does work
Yes but the Atlantic is on the East side of America and the Pacific is on the West.
Load More Replies...Check a map. Which side of the Americas is the Pacific on?
Load More Replies...You could look up that map yourself if only you had access to the Internet.
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That 1,000,000 (one million) seconds is ~11.6 days, and 1,000,000,000 (one billion) seconds is ~31.7 years.
And one trillion seconds is 31710 years.The scary thing about that is the US national debt passed 34 trillion dollars on Dec 29, 2023. For reference, it was 1 trillion dollars in 1981.
That's not scary. What's scary is how quickly world population has gone from 2 billion people to 8 billion people. That was all within my one little lifetime.
Load More Replies...And to think there are several people in this world who are billionaires several times over. Blows the mind !!!
Here is another fact: in each compilation of "surprising" facts the fact about million and billion seconds will be mentioned
That's one easy way to envisage large numbers. Another easy way is to envisage the number of tenths of a millimetre in 100 km (one billion). So 3.17 years times 100 km cubed in tenths of a second of tenths of a mm cubed is one billion to the power 4. Equals 10^36.
Are we going by a proper billion (which is a million million) or the US billion, which is a thousand million?
There are more hydrogen atoms in a single water molecule than there are stars in the entire solar system.
And there are 2 hydrogen atoms in a single water molecule, so.
Load More Replies...So, more than 1. This is just wordplay, not something that sounds illogical.
"Buffalo buffalo buffalo Buffalo buffalo" is a complete, grammatically correct sentence in the English language.
For those seeing clarification; https://en.m.wikipedia.org/wiki/Buffalo_buffalo_Buffalo_buffalo_buffalo_buffalo_Buffalo_buffalo#:~:text=%22Buffalo%20buffalo%20Buffalo%20buffalo%20buffalo,linguistic%20constructs%20through%20lexical%20ambiguity.
Thanks...one good translation there says, "Bison from Buffalo, New York, who are intimidated by other bison in their community in turn intimidate other bison in their community."
Load More Replies...First and fourth "Buffalo" refer to the city of Buffalo, NY. Second and fifth "buffalo" refer to the animal. Third "buffalo" is a verb, meaning "to intimidate."
So it says 'buffalo from Buffalo intimidate buffalo buffalo '
Load More Replies...Who polices the police? Police police police police. And who polices the police police? Police police police police police police.
Hmm, did you know that lighters were invented before matches? Sounds kinda weird, right?
It totally depends on what you mean by 'matches'. Lighters were brought out in 1824, and friction matches in in 1827. However, the first self-lighting match was created in 1805. by Jean Chancel.
And what you mean by "lighters" humans were using flint to spark fires 20,000 years ago.
Load More Replies...Cool, it does make sense though. Wouldn't you want something that could provide fire longer than a few seconds.
If you catch the spark on pure carbon (think charred cloth or charred shredded bark) you can blow that into a really hot glow that will not go out, and if you tuck that into a nest of finely shredded tinder, the result will be a large mass of flame with which to start your fire. I'm an old buckskinner and I've done it hundreds of times. Easier than matches once you get the hang of it.
Load More Replies...What about a couple of sticks, they're good for lighting fires?
The more I light my lighter… The lighter my lighter gets until it’s too light to light…
Maybe not since flint/ rocks were found to make a spark whe hit before phosphorus and that was invented.
The first matches were unreliable and downright dangerous. One type was known as lucifers.
If you somehow managed to fold one piece of paper 42 times, its thickness will actually be equal to the distance between the Earth and the Moon.
Come on guys, maybe try the maths at least before calling this BS... Common paper thickness is ~0.09 mm. Fold it once, it's now 0.09 x 2 = 0.18 mm. Fold it a 2nd time, 0.09 x 2² = 0.36 mm. Fold it a 3rd time, 0.09 x 2³ = 0.72 mm. etc. Fold it 42 times, 0.09 x 2⁴² = 395,824,185,999.36 mm = 395,824 km. Earth-Moon distance is on average ~384,400 km.
That's for the calculation of course. In reality, there's a point where the paper gets too thick and you will struggle to fold it.
Load More Replies...I saw a documentary on this where a group of people folded a football field size paper a number of times. I'm sure a decent search will point you the way to find it.
Help- what would be the math formula to figure this out without actually doing 42 calculations starting with the thickness of paper (0.1mm)? Anyone know?
Babies will sleep in longer if you put them to bed earlier
My experience shows that babies will do whatever they flipping please regardless of what science seems to think
Babies are shocking bad at reading the 'baby books' written by 'experts'. They just make it up as they go along.
Load More Replies...This is very true for my son. All his life, if I get him to bed too late he wakes up too early. My family thinks I'm nuts bc he's in bed by 7PM. But he sleeps until about 7 this way. If I put him to bed at 730 he's up at 530.
Good luck proving that one unless you are averging out a lot of babies. Way too many variables.
I must teach my babies to read so that they can follow up on this.
The speed of light is constant on all reference frames
Physicists have not just managed to stop light completely, they have managed to make it run backwards. Light has two velocities, group velocity and phase velocity, and they've managed to make both negative, independently. As you are no doubt aware, light never travels at the speed of light. It usually travels slower than the speed of light, but when "tunnelling" it travels faster than the speed of light.
Load More Replies...The Special Theory of Relativity in 1905. The General Theory of Relativity followed in 1915.
Load More Replies...And yet you can see the speed of light change as it's refracted at the boundary between air and water (as well as other materials)
Is the speed of dark equal to the speed of light? Dark appears at the same velocity that light disappears.
According to the book "The speed of dark" by Elizabeth Moon, the speed of dark has to be faster than the speed of light because dark gets there first. That's not good physics.
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You can’t know both what the exact position and the exact momentum of a quantum particle will be.
This is Heisenberg's uncertainty principle - almost. It's actually the speed, not momentum (although they are related). In order to measure its velocity, one has to know its position; but to measure its position more accurately, the less accurately one knows its velocity.
I used to drive a Heisenbergmobile, but every time I looked at the speedometer, I got lost.
Load More Replies...Yeah, this may be a bit complex for most of us...not relatable unless you are a scientist/physicist/quantum physicist/etc.
Enjoy the entertainment, but PLEASE don't think people who post on here know what they are talking about, and don't bother trusting the comments. Use a dictionary or an encyclopedia that has actually been peer reviewed and published. Thank-you, rant over
I also think like you, we just need to watch, know and find out the information for ourselves.
Load More Replies...This post, as so many other here, can be described at the best as mildly interesting. I can go on with my life without knowing them. Some, I saw here many, many times. Boooring.
100% incorrect. People also ask What is difference between flammable and inflammable? Flammable and inflammable do not mean the same thing. If something is flammable it means it can be set fire to, such as a piece of wood. However, inflammable means that a substance is capabble of bursting into flames without the need for any ignition.
The first definition in the Merriam-Webster dictionary for "inflammable" is simply "flammable". (The only other definition is metaphorical, so no help there.) Both OSHA and the NFPA seem to use "flammable" exclusively: never "inflammable". They do make a distinction between "flammable" and "combustible", though; the latter have higher flashpoints than the former, which could be seen as needing external ignition, from a certain point of view. Is this what you're thinking of? (I chose OSHA and the NFPA as likely sources of technical definitions; if you have a different one, I'd be interested in knowing about it.)
Load More Replies...Enjoy the entertainment, but PLEASE don't think people who post on here know what they are talking about, and don't bother trusting the comments. Use a dictionary or an encyclopedia that has actually been peer reviewed and published. Thank-you, rant over
I also think like you, we just need to watch, know and find out the information for ourselves.
Load More Replies...This post, as so many other here, can be described at the best as mildly interesting. I can go on with my life without knowing them. Some, I saw here many, many times. Boooring.
100% incorrect. People also ask What is difference between flammable and inflammable? Flammable and inflammable do not mean the same thing. If something is flammable it means it can be set fire to, such as a piece of wood. However, inflammable means that a substance is capabble of bursting into flames without the need for any ignition.
The first definition in the Merriam-Webster dictionary for "inflammable" is simply "flammable". (The only other definition is metaphorical, so no help there.) Both OSHA and the NFPA seem to use "flammable" exclusively: never "inflammable". They do make a distinction between "flammable" and "combustible", though; the latter have higher flashpoints than the former, which could be seen as needing external ignition, from a certain point of view. Is this what you're thinking of? (I chose OSHA and the NFPA as likely sources of technical definitions; if you have a different one, I'd be interested in knowing about it.)
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