stackyFACTS
STAY CURIOUS

The world is more interesting than you think.

Unexpected facts, big ideas, and little discoveries. Find something that sparks your curiosity today.

34,160 facts11 topics to exploreStart exploring ↓
YOUR NEXT DISCOVERY

A little more wonder

Page 735 / 1424
STACKY FOR IPHONE

A bigger world.
One discovery
at a time.

Keep discovering with Stacky. Interesting facts in an app that is always within reach.

Download on the App Store
Why Unplugging an Inductor Can Create a Huge Voltage Spike
Technology

Why Unplugging an Inductor Can Create a Huge Voltage Spike

An inductor is basically just a spool of copper wire that stores power in a magnetic field. Because they forcefully resist any sudden changes in electrical…

Discover more
How tin can grow tiny metallic whiskers
Technology

How tin can grow tiny metallic whiskers

For absolutely no logical reason, pure tin finishes on electronic components will sometimes spontaneously sprout microscopic, conductive metallic hairs. These…

Discover more
Motion capture actors perform scenes on empty stages
Games

Motion capture actors perform scenes on empty stages

It takes immense theatrical talent to deliver a dramatic monologue to a tennis ball on a stick. Performers acting out cinematic sequences do so in sterile,…

Discover more
Why your backpack feels like an adult security blanket
Transport

Why your backpack feels like an adult security blanket

Most professionals carry a backpack every single day, yet it contains nothing but an umbrella, a laptop they won't use, and three crushed mints. It has…

Discover more
A butt is actually a giant cask of wine
Science

A butt is actually a giant cask of wine

Stop giggling. A butt is an actual unit of volume used for wine and ale casks, equaling about one hundred and twenty-six gallons. Whenever you hear someone…

Discover more
Colanders immediately drain away boiling pasta fluids
Transport

Colanders immediately drain away boiling pasta fluids

When you need to keep the noodles but get rid of the water, this metal bowl full of holes is the ultimate filter. It transports the liquid straight down the…

Discover more
Walk-ins claim new souls hijacked their bodies
Myths & mysteries

Walk-ins claim new souls hijacked their bodies

Having a midlife crisis is exhausting, so it is much easier to just claim a brand new soul took over your physical vessel. The 'walk-in' theory suggests that…

Discover more
John Locke wrote passionate letters to a married philosopher
History

John Locke wrote passionate letters to a married philosopher

The brilliant mind behind modern liberal theory was incredibly messy in his personal affairs. Though he outwardly remained a staunch bachelor, he spent years…

Discover more
Why movie snow crunches like cornstarch
Games

Why movie snow crunches like cornstarch

The crisp, satisfying crunch of boots stomping through fresh powder is completely fake. Sound teams simply fill leather pouches with baking cornstarch and…

Discover more
Boy bands sing a century-old harmony
Culture & entertainment

Boy bands sing a century-old harmony

Underneath the frosted tips, synchronized dance routines, and overwhelming teen angst, the musical foundation is incredibly old-fashioned. Pop vocal groups…

Discover more
Digital tournament teams possess terrifying mascots
Games

Digital tournament teams possess terrifying mascots

Organizations desperate for brand identity often create the most horrifying physical costumes imaginable. These massive foam monstrosities roam the crowd at…

Discover more
Sundials become completely inoperable indoors or at night
Science

Sundials become completely inoperable indoors or at night

For centuries, the absolute pinnacle of human timekeeping was a stick casting a shadow. If it rained, you just did not know what time it was. If it was night,…

Discover more
Laundry baskets move dirty clothes across hallways
Transport

Laundry baskets move dirty clothes across hallways

Instead of taking clothes directly to the machine, we throw them into a plastic tub that we have to awkwardly carry on our hip. The laundry basket is a…

Discover more
Centrifugal governors control engine speeds using rotation
Science

Centrifugal governors control engine speeds using rotation

Before digital computers managed everything, massive steam engines regulated themselves using two metal balls spinning on a central axis. As the engine spun…

Discover more
The president who swore his oath on a law book
History

The president who swore his oath on a law book

In a rare display of literalism, the sixth president decided that swearing an oath to uphold a constitution should probably be done on a book actually…

Discover more
Why heartbreak can send you to the freezer
Psychology

Why heartbreak can send you to the freezer

You aren't actually hungry; your heart is just broken. Emotional eating bypasses the stomach entirely, using hyper-palatable foods as an instant coping…

Discover more
Why TV turned rice balls into jelly donuts
Games

Why TV turned rice balls into jelly donuts

Because localizers assume Western children will suffer a mental breakdown if they see foreign food. Editors notoriously painted over traditional Asian snacks…

Discover more
Sushi conveyor belts deliver plates directly to diners
Transport

Sushi conveyor belts deliver plates directly to diners

Why bother talking to a waiter when you can pluck a spicy tuna roll directly from a moving rubber track? This system turns a restaurant into a literal food…

Discover more
StackyMore discoveries in the app
Download on the App Store