Did You Know? Water Can Boil and Freeze at the Same Time!
This amazing phenomenon is called the *triple point*, where temperature and pressure are just right for the three states—solid, liquid, and gas—to coexist in equilibrium.
It's a critical concept in physics and is used to define temperature scales precisely.
This condition occurs only at specific points — for water, that’s 0.01°C and 611.657 pascals.
Scientists often demonstrate it using vacuum chambers in labs!
Bananas Are Naturally Radioactive!
Bananas contain potassium-40, a naturally occurring isotope that makes them slightly radioactive.
But don’t worry — you'd have to eat millions of bananas at once for it to harm you!
This fun fact is often used to explain radiation in everyday life.
Scientists even created a "banana equivalent dose" to illustrate radiation exposure in simple terms.
The Eiffel Tower Grows in Summer!
During hot summer days, the Eiffel Tower can grow up to 15 cm taller!
This happens due to *thermal expansion* — when materials like iron heat up, they expand.
At night or in winter, the tower contracts back to its original height.
It’s a perfect real-world example of physics in action!
Octopuses Have Three Hearts!
Two hearts pump blood to the gills, while the third pumps it to the rest of the body.
When an octopus swims, the heart that sends blood to the body actually stops beating!
That’s why they prefer crawling — swimming tires them out quickly.
They also have blue blood due to a copper-based molecule called hemocyanin.
Lightning Is Five Times Hotter Than the Sun!
A lightning bolt can reach temperatures of 30,000 Kelvin — that’s hotter than the surface of the Sun!
This extreme heat causes the surrounding air to expand explosively, creating thunder.
Lightning is also a major natural producer of ozone, which protects us from harmful UV rays.
It’s nature’s own high-voltage power display!
Your Stomach Gets a New Lining Every Few Days!
The stomach’s lining is replaced about every 3–4 days to prevent it from digesting itself.
That's because stomach acid is incredibly strong — it can dissolve metal!
To stay safe, the stomach continuously regenerates its inner walls.
This constant renewal is crucial for digestive health and protection.
