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Fresh insights for curious minds


Can a car change its color due to the Doppler effect?
Science memes have become extremely popular among the general public and scientists. Some achieved such wide recognition that they became iconic, blending science and humor into an irresistible mix of intellectual enjoyment. Perhaps the most notable is the one where a car changes its color from blue to red as it drives past a pedestrian. The meme uses a well-known example from sound to illustrate the Doppler effect in light, playing out the analogies in a humorous yet informa

Physics Core
Jun 4, 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


Do we weigh less at the skyscraper's top? Gravity and altitude
Observing the scenery from the top of a skyscraper can be an uplifting experience. Many skyscrapers offer stunning panoramic views that...

Physics Core
May 26, 2025


We Are Made of Stars. Tracing Human Origins Back to the Big Bang
The phrase "We are made of stars" originally served as a poetic metaphor to emphasize the beauty of the human spirit. It wasn't meant to have scientific significance until American astrophysicist Carl Sagan famously explained that the atoms in our bodies were created in ancient stars, which themselves originated from the primordial clouds left after the Big Bang. Considering how far back we can trace the chemical makeup of our bodies, we carry the entire history of the Univer

Physics Core
May 14, 2025


The Eureka moment that made a splash in science: the story of Archimedes' Principle
We find ourselves in ancient Greece, around 250 BC. King Hiero of Syracuse commissioned local goldsmiths to make a crown and got...

Physics Core
Apr 26, 2025


Do black holes deserve their bad reputation? Beyond the event horizon
It's undeniable that black holes have a reputation for being voracious mass eaters. R umors have it that they are destroying our Universe...

Physics Core
Apr 18, 2025


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


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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