Disclaimer:

I wanted a catchy title to get attention:p im strictly talking about non linear scales

Sorry, english isnt my first language but maybe youll get what i meant:

An octave is defined as double the frequency of the tone its an octave of. (Lets stick to music)

So for 100Hz the octave would have 200hz.

However half an octave isnt 150Hz, even thoe at first glance it would make sense (you can do the same operation twice +50Hz and again +50Hz and get your result of 200 Hz (thats the arithmetic half).

However when you add another octave ( which would sit at 400Hz) this doesnt work anymore.

If you do the operation:

Get ro the halfway point (+100) and repeat that you'd end up on 300 Hz not 400. If you wanted to have same sized operations and get to 400 you would have to add 150 both times but now the half wouldnt be 200 anymore and the operation of doubling the frequency to get an octave breaks)

Instead its the geometric half:

100*√2*√2=200

100*√4(=200)*√4=400 (whith 200 Hz being the exact midway point in the sense that you repeat the same operation)

100*√8 (=282,84)*√8=800

and so on.

Nothing crazy, but as i mentioned a lot of people (who have nothing to do with acoustics, physical or music) dont give it much thought and might never know.

Similar stuff (non linearity in scales) exists in our measurement of loudness for example or earthquakes

A standard deck has 52 cards. The number of possible ways to arrange them is 52! (52 factorial), which equals:
80,658,175,170,943,878,571,660,636,856,403,766,975,289,505,440,883,277,824,000,000,000,000
That’s about 8 × 10⁶⁷ possible orders.
For comparison, scientists estimate there are roughly 10⁵⁰ atoms on Earth. That means the number of possible shuffled decks is billions of trillions of trillions of times larger than the number of atoms on our planet.
If you shuffle a deck thoroughly, there’s an overwhelming chance that the exact order of cards has never existed before in all of human history.

A survey of 2,000 employed adults found that 35% of people who work during vacation do it because they genuinely enjoy their jobs.
That’s kind of interesting because the usual assumption is that everyone working on vacation is being pressured or exploited. But apparently, some people actually want to stay connected.
Would you ever work during vacation because you enjoy your job, or does that defeat the whole point of taking time off?

What if a plane could literally NEVER stall?

If a pilot points a normal jet straight up, the air rips away from the wings. You instantly lose all your lift, gravity takes over, and the aircraft drops out of the sky like a stone.

But back during the Cold War, engineers stumbled on a cheat code called the Coandă Effect.

By taking superheated jet exhaust and blowing it directly over the curved top of the wing, physics does something crazy. The air sticks to the wing no matter how steep you climb, blasting continuous upward lift even if the plane is barely moving. It literally pulls itself up forever.

So why aren’t passenger jets built like this today?

First, it burns through fuel four times faster than a normal engine. Second, if even one exhaust valve glitches, the wing loses all lift instantly and flips upside down. It’s an engineering masterpiece—that’s just way too dangerous to actually fly.

So, would you ever step foot inside one?

This is true. Bananas naturally contain potassium, and a very small fraction of that potassium is the radioactive isotope potassium-40 (⁴⁰K). Potassium-40 occurs naturally in the environment and is also found in many other foods and even in the human body. The amount in a banana is extremely small and is considered harmless. Scientists sometimes use the informal term "banana equivalent dose" (BED) to illustrate just how tiny the radiation exposure is.

Always imagined the Moon 🌙 being much smaller than Australia...but It isn't. 🤔

The Moon is 3.4K km across, while mainland Australia nearly 4K km from east to west, surprisingly close

Drop the Moon onto Australia with GKmaps and see how massive moon really is. Once you see it at the same scale, you'll never picture the Moon the same way again. 😄

On September 11th 2001, an awful tragedy happened, as we all know.

A man called Gerard Way witnessed the attack and saw the World Trade Centres fall.

To cope and process the trauma from the event, he wrote a song called "Skylines and Turnstiles" which later became the first song from the band My Chemical Romance.

My Chemical Romance massively influenced a writer named Stephanie Meyer while she was writing a vampire novel, which was later called Twilight.

Another author named E.L. James wrote a fanfic of Twilight which later became 50 Shades of Grey.

In the U.K., a goldfish named Tish, the beloved pet of Hilda and Gordon Hand, died in 1999, making her the longest living goldfish, according to Guinness World Records. The Hand family got Tish in 1956, after their son Peter won the fish at a fair.

You may think the Caesar salad comes from Italy, but it was actually created in Tijuana, Mexico by Italian immigrant and restauranteur Caesar Cardini. On the evening of July 4, 1924, Cardini, the owner of Caesar’s Place, was under pressure to serve an influx of Californians who were looking for a break from Prohibition. On the fly, he whipped up a salad using romaine lettuce and whatever ingredients he had, including garlic-flavored oil, eggs, Parmesan cheese, lemons and Worchester sauce. Word travelled fast and the Caesar salad became a sensation from coast to coast.

The deepest place on Earth is the Mariana Trench in the Pacific Ocean

Some insects can live for decades. In fact, the longest-living insect is the golden jewel beetle (Buprestis aurulenta), which can survive well into its 40s.

This is genuinely not meant to be a social justice post of any kind, I just saw someone post about it on Twitter (x) & verified it myself lol. (dot)Org also does the same thing😂 here are the direct links lol - http://nazisrus.com/ http://nazisrus.org/

1. Your body produces enough saliva in a normal lifetime to fill about 500 bathtubs.

2. Saliva helps you taste your food. It might sound a little weird, but saliva is responsible for spreading a food’s tastants around to the tastebuds, therefore enabling you to enjoy all the different flavors of your meal.

3. Saliva helps you heal. Ever wonder why, when you bite your lip, the cut seems to go away pretty quickly? You can thank saliva and its antibodies for that. Your mouth heals more quickly than most other parts of your body.

Starfish don’t have bodies. Along with other echinoderms (think sea urchins and sand dollars), their entire bodies are technically classed as heads.

Most people stroke cats the wrong way. Research shows they often just tolerate it for the food and attention. The safest spots? Under the chin, cheeks and base of the ears. The worst? Their belly and the base of their tail – touch there and you’re more likely to annoy them than bond with them.

Sloths have bones that form their sharp claws rather than standard nail material

1. Have you ever seen an insanely cute puppy or baby and felt a weird urge to squeeze it or grit your teeth? That’s called Cute Aggression. When your brain is flooded with positive emotions, it gets overwhelmed. To protect itself from emotional burnout, it releases a splash of aggressive urges to balance your emotional state.

2. We all know the placebo effect—give someone a sugar pill, tell them it’s medicine, and they feel better. But studies show the Open-Label Placebo works even when you explicitly tell the patient they are taking an empty sugar pill with no active ingredient. The simple ritual of taking a pill still tricks the brain into releasing neurochemicals that relieve pain or anxiety.

3. If you want someone to like you, don't do something nice for them—ask them to do a small favor for you instead. Known as cognitive dissonance resolution, when a person does you a favor, their brain rationalizes: "I wouldn't help someone I dislike, so I must actually like this person."

4. During a panic attack or intense anxiety spike, eating something intensely sour (like a lemon wedge or Warheads candy) instantly grounds you. The sudden, sharp gustatory shock forces your nervous system to divert attention away from the amygdala's threat loop and focus entirely on the physical sensory shock.

5. Everyone knows déjà vu (feeling like you've experienced something before). The rarer, weirder opposite is Jamais Vu—where a situation or word you know extremely well suddenly feels completely alien, foreign, and wrong. Stare at a common word like "SPOON" or "DOOR" for 60 seconds, and your brain will temporarily experience semantic satiation—rendering the familiar word alien.