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Fresh insights for curious minds


Lewis Carroll’s Milk and Water Puzzle: The Spoon Does the Math
Most solutions to this classic puzzle miss the point. The equality comes from the spoon carrying the same volume both ways, not from the containers.

Physics Core
Jun 2


Spring vs thread: which ball hits the ground first?
Two identical balls are released at the same time. At first glance, they should hit the floor simultaneously. However, one detail changes everything.

Physics Core
Apr 2


The Water Jug puzzle: logical solution
A logical approach to the classic Water Jug puzzle, as featured in the film Die Hard, yields two solutions grounded in clear analytical reasoning.

Physics Core
Feb 17


Which cat doesn't get milk? A fun lesson in fluid dynamics
A playful variation of a classic puzzle becomes a fun gateway into the science of fluid dynamics — where gravity and design determine who gets milk.

Physics Core
Oct 22, 2025


Two Cyclists and a Bird: cracking a tough problem in two simple steps
Problem: Two cyclists are approaching each other with speeds of 2 mph and 3 mph. When they are 10 miles apart, a bird starts flying back...

Physics Core
May 28, 2025


Potato Paradox: a clever play on common confusion about percentages
Problem . Fred brings home 100 kg of potatoes, made up of 99% water. He leaves them outside, allowing for some water to evaporate, thus reducing the water content to 98%. How much do the potatoes weigh now? Answer . The new weight is 50 kg. Fig 1 . Potatoes contain about 80% water on average. Solution . At first glance, the answer might seem illogical. The water content dropped by only 1%, so the weight shouldn't change much. However, the solid content doubled from 1% to 2

Physics Core
Mar 30, 2025


Three students and a sliced pizza
Puzzle: Three students, Emma, Peter, and James, shared a pizza. Emma ate a quarter, Peter ate a third , which resulted in Peter having 2...

Physics Core
Mar 19, 2025


A bat and a ball problem. Two modes of thinking: fast (intuitive) and slow (analytical)
This intriguing puzzle, which even Harvard students got wrong, highlights how two modes of thinking, fast and slow, affect our decisions

Physics Core
Apr 1, 2024
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