Social Question

kruger_d's avatar

Can you share with us some obscure knowledge?

Asked by kruger_d (6231points) April 8th, 2022

For example, a common colorant used in textiles, cosmetics and food is made from bugs. The cochineal beetle produces a brilliant scarlet color when crushed.

Observing members: 0 Composing members: 0

69 Answers

ragingloli's avatar

In Vray, the bitmap used in the normal map shader needs to have its gamma value set to 1, or else the material it is slotted into will not be rendered correctly.

RedDeerGuy1's avatar

Canada had oil pipelines to British Columbia and Texas 40 years ago. They just want a more efficient and higher capacity pipelines.

KNOWITALL's avatar

Did you hear a new dinosaur was found in my state recently? New genus, new species. Pretty cool.

https://www.smithsonianmag.com/smart-news/fossil-hot-bed-uncovered-in-missouri-confirms-new-species-of-dinosaur-180979151/

Brian1946's avatar

When I saw Jimi Hendrix play at the Hollywood Bowl in September, 1968, The Experience did a cover of “Sunshine of Your Love”.

Wow, I thought the above was unGoogleable, but I’m wrong! ;-o

Tropical_Willie's avatar

Howard Hughes during the 1940s and 1950s grew celery on fields West of Lincoln Blvd in Culver City. The profits from the sale of the celery were the Christmas bonuses for his employees at the facility East of Lincoln Blvd.

They also paid in 1958, a $5.00 per pelt of Jack Rabbit, there was a airfield for landing planes and helicopters. Rabbits and planes don’t play well together !

Dutchess_III's avatar

It creates the candy coating on MnMs too.

Call_Me_Jay's avatar

A nautical mile was created as 1/60 of a degree of latitude, also called 1 minute of latitude.

So your distance from the equator in nautical miles is your latitude x 60.

For example, Rome is at 42 degrees north latitude. So it’s 42×60, or 2520 miles from the equator.

It gets a little more complicated because Earth isn’t perfectly round, but close enough.

Also, a speed of 1 knot is 1 nautical mile per hour.

I had no idea why miles were different at sea until I happened upon this info recently.

Demosthenes's avatar

The word clue originated as a variant of clew, meaning “ball of yarn or thread”. The semantic change resulted from the story of Theseus using thread to mark the path through the labyrinth.

kritiper's avatar

The slope of the sewer pipe coming from your house should be ½” per foot.

Samantha4One's avatar

I’m editing this if you don’t mind. Sorry about that.

Brian1946's avatar

Agathokakological: composed of both good and evil.

My vocabulary is catching up to @raum’s!

flutherother's avatar

Bellingcat The investigative journalism group that specialises in fact-checking and open-source intelligence (OSINT) was first named “Brown Moses” after a song by Frank Zappa.

Blackwater_Park's avatar

The “brown tone” Not to be confused with the “brown note” is the sound of a Marshall JMP/JCM guitar amplifier with every knob turned all the way up. Some players, notably Edward Van Halen used a variac (variable AC transformer) to lower the mains voltage to the amp slightly to dial in his famous “brown sound.”

Brian1946's avatar

@Dutchess_III

In the binary numerical system, 1+1 does equal 10.

This is because in that system, the highest digit is 1, so the counting goes: 0,1,10,11, 100. 101, 110, 111, etc.

Here’s a binary “joke”: there are 10 people in this room- you and I. ;)

SnipSnip's avatar

We don’t sneeze in our sleep because our brain shuts down that reflex. Thank you, Brain.

Call_Me_Jay's avatar

There are 10 kinds of people in the world – those who know binary numbers and those who don’t.

Dutchess_III's avatar

It’s computer language @Call_Me_Jay.

Blackwater_Park's avatar

Binary is a base 2 system, not just for computers. For example in base 16, 5 + 5 =A

Call_Me_Jay's avatar

Maybe this is common knowledge but it was a big surprise to me when I learned it recently.

Female red-wing blackbirds are not black birds with red wings. They look more like common sparrows. I’ve been around these birds all my life and I never suspected I only recognized the males.

Cornell Lab – All About Birds – Red-wing blackbird

LostInParadise's avatar

You can form infinitely right triangles with integer valued lengths. Just find two integers a and b such that one is even and the other is odd and they have no common divisors. Then form a triangle with lengths (a2-b2), 2ab and (a2+b2). You can always satisfy the conditions for a and b by choosing two consecutive numbers.

Dutchess_III's avatar

^^^ God you are so smart @LostInParadise! And I mean that for real. I ♡ smart people. (((hugs)))

LostInParadise's avatar

Thank you kindly, but my math knowledge is pretty rudimentary compared to a mathematician.

Brian1946's avatar

If you’re standing on something that’s high above the ground, one way to measure how high you are is to drop a coin over the edge.

Then count how many seconds it takes to hit the ground.
Next, use the formula 16T², where T is the number of seconds.

E.g., if it takes 10 seconds, then you are way above the surface below: 16×100=1,600 feet.

Brian1946's avatar

Iquitos, Peru (my wife’s native nation) with a population of 422,000, is the world’s largest city that can’t be reached by road.

Dutchess_III's avatar

How do they get supplies there @Brian?

Brian1946's avatar

I guess airlifting is one way.

It’s on the Amazon River, so perhaps also by small water vessels.
Ain’t no freighters gettin’ that far up the Amazon. ;)

Brian1946's avatar

It may look comical, but when an owl bobs its head forward, back, up, and down, it is working to maximize its depth perception.

The motion allows owls to triangulate objects and build a composite picture of their surroundings.

With eyes nearly immobile in their sockets, owls must rely on various head movements (including the famed 270º swivel and the wide-eyed bobbing) to visualize their environment and to prepare to nab their prey.

Tropical_Willie's avatar

Iquitos, Peru port Located about 3700 kilometers upstream from the Atlantic Ocean on the Amazon.

Nomore_Tantrums's avatar

Jimmy Hendrix had only one Top Forty hit. “All Along the Watch Tower”.

LostInParadise's avatar

I just read that the yo yo was invented in Ancient Greece and was rather popular.

Call_Me_Jay's avatar

I have lived in California USA where I could look east and see the Pacific ocean. I have lived in Michigan USA where I could look south and see Canada.

Call_Me_Jay's avatar

Iquitos, Peru port Located about 3700 kilometers upstream from the Atlantic

Chicago (1200 miles inland by water) is an international port.

So is Duluth, Minnesota, 1,600 miles upstream.

Freighters can travel from the Atlantic through the St. Lawrence Seaway to the Great Lakes. Ships of up to 23.8 meters width and 8 meters draft can make the trip.

raum's avatar

Fry’s closed because of @Brian1946.

Brian1946's avatar

@raum

Lmao!

While that “knowledge” was once obscure, I don’t think it is anymore.

After all, what corporation could possibly withstand a $40 shortfall in their inventory?! ;-o

raum's avatar

@Brian1946 I, too, was shocked to learn of this. ;-o

chyna's avatar

Birds almost never mate outside their species.

RedDeerGuy1's avatar

I’m not certain but I believe that whales jump out of the water because they are itchy.

LostInParadise's avatar

I did a Web search for why whales jump out of water. It is not known for certain, but it seems to be a form of communication. Link

Dutchess_III's avatar

Nice @LostInParadise. Or maybe they’re itchy.

ragingloli's avatar

If you order a “pepperoni pizza” in Europe, you get a pizza topped with pickled chili peppers, not a sausage pizza,

Dutchess_III's avatar

Sausage and pepperoni are two different kinds of meat.

ragingloli's avatar

“Sausage” is defined by the shape, not the type of meat in it.

raum's avatar

@ragingloli You mean like peppercini?

raum's avatar

@Dutchess_III Pepperoni is a subset of salami. Salami is a subset of sausage.

Need some Venn diagram action over here.

raum's avatar

@ragingloli What do you guys call pepperoni?

ragingloli's avatar

We just use Salami.

Dutchess_III's avatar

You can order Salami pizza?

ragingloli's avatar

It is a staple.

Dutchess_III's avatar

Staple pizza? Sounds very metallic.

Call_Me_Jay's avatar

Pepperoncini in the US means pickled hot peppers. I keep some in my fridge at all times. There are hundreds of brands, and the quality varies immensely.

My favorites are Mt. Olive Pepperoncini .

Just a few days ago I discovered a nearby store with them. Woohoo! I had been deprived since I moved to Milwaukee a couple of years ago.

Brian1946's avatar

The San Andreas Fault is a slip-strike fault, which means that the fault itself — a crack in the Earth’s crust — is vertical, like the way you’d slice a cake.

The opposite is a dip-slip fault, where the division is essentially horizontal and the two parts of the crust are moving above and below each other, rather than side-by-side.

But the San Andreas Fault isn’t just any old slip-strike fault: it’s also a transform fault, which is a certain type of slip-strike fault. A transform fault is a slip-strike fault that happens along the boundaries of continental plates.

RedDeerGuy1's avatar

You can’t make Jell-O with kiwi or pineapple.

jca2's avatar

@RedDeerGuy1 You can’t make sugar free jello with kiwi or pineapple. Regular jello, you can.

ragingloli's avatar

Eggs in Europe are not refrigerated.

Blackwater_Park's avatar

@ragingloli They’re not washed either.

ragingloli's avatar

@Blackwater_Park
Which is the reason that they do not need to be refrigerated.

Brian1946's avatar

I just saw this essay posted at Nextdoor.com by a woman living in Edison, NJ:

Please do not hurt me or my mom.

We just temporarily moved to the neighborhood so we could be safe.
If you have suddenly seen a fox in the yard near your home, there is a good reason for this.
It is denning season. Between the end of March and early April, a mother fox will give birth to between 4 and 5 kits (a baby fox is called a kit).
A coyote will often find a fox den, dig out the babies, and kill them.
A mother fox knows this and will frequently choose a den site close to people, away from where coyotes generally go.
A fox will often den under a porch, shed, garage, barn, or side of a hill, trying to keep her little family safe.
Please offer them a short-term rental because this is not a permanent situation.
If you are lucky enough to see how beautiful an adult fox is, or witness the kits playing (at a distance of course), you will be glad you did!
It is not uncommon for Red Foxes to change dens several times during the season, so you may not see them for long.
Kits are slow to develop and will not leave the den until they are about a month old. Foxes do not live in a den year-round, only when a mother has babies.
During the summer as the kits grow older, you will see less and less of them, and by September everyone will have packed up and moved on. Please do not call a service to “relocate them”, they will often be killed.
If you see a fox during the day, it does not mean she is rabid. A mother fox works tirelessly to feed her kits and will often be out during daylight hours foraging for food.
Foxes are omnivores, generally feeding on berries, grasses, and small rodents. They are solitary and prefer to be left alone.
They do not want to hunt and eat your children, mate with your dog, or kill your cat.
A fox just wants a place to raise her family safely, please allow her to do that.

Nomore_Tantrums's avatar

I read recently that the last fight between the US Army and Native Americans took place in Jan. 1918, when units of the Tenth Cavalry (Buffalo Soldiers) tracked down, and had a fire fight with, a band of Yaquis who had been raiding Arizona ranches from a stronghold in Mexico. Thought that was kind of interesting.

Call_Me_Jay's avatar

Jimi Hendrix toured with the Monkees – as the lesser warm-up act.

Brian1946's avatar

The longest walking distance on Earth Is 14,000 Miles.

From Magadan in Russia, to Cape Town in South Africa, you can walk 14,000 miles (with bridges and open roads). No flying or sailing is required.

Brian1946's avatar

The microwave oven was invented by accident.

In 1945, Percy Spencer, the inventor of the microwave, was standing next to an active magnetron when he discovered it had melted a candy bar that was in his pocket. Curious, he attempted to pop popcorn, and when it worked he realized microwaves could potentially be used to cook food.

Tropical_Willie's avatar

@Brian1946 family friend in the 1960s had a Amana RadarRange microwave !

RedDeerGuy1's avatar

From Dr. Who T.A.R.D.I.S. is “Time and relative dimensions In Space”.

Answer this question

Login

or

Join

to answer.
Your answer will be saved while you login or join.

Have a question? Ask Fluther!

What do you know more about?
or
Knowledge Networking @ Fluther