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Fresh insights for curious minds


How can a mirror reflect an object hidden from its view? Laws of optics
Mirrors love messing with our heads, challenging us with deceptive illusions that can make us question our sanity. Being accomplished...

Physics Core
Apr 9, 2025
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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
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Anti-gravity tables explained. Tensegrity
We expect a table to have legs. After all, how else can it support the top in its position? The idea of replacing legs with chains seems...

Physics Core
Mar 26, 2025
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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
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Angels in the corner of your eye: central and peripheral vision
I met a woman who claimed to have seen angels. "They are all around us," she explained. "You can spot them from the corner of your eye. They look like flickers of vibrating energy and appear in the moment of sadness, offering comfort and unconditional love." Her words reflected widespread belief in the healing power of faith and were so touching that I couldn't bring myself to tell her it was her peripheral vision playing tricks on her . Fig.1. The brain is unable to pr

Physics Core
Sep 14, 2024
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Greatest Common Divisor. Euclidean algorithm
The greatest common divisor (GCD) of two numbers, say 12 and 8 , is the greatest number (in this case, 4) that divides them without a...

Physics Core
Jun 19, 2024
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