Science & Technology
How does a battery work?
It stores energy as chemistry and releases it as electricity. How a battery works, what the anode, cathode, and electrolyte do, and why some recharge.
🔬 Science & Technology
Science & Technology
How the science and tech we use every day actually work.
Science & Technology
How does a magnet work?
Why one piece of metal attracts another without touching it: the poles, the magnetic field, and the orderly dance of electrons that explains magnetism.
Science & Technology
What is 5G?
The fifth generation of mobile networks promises huge speed and very low latency. What 5G really is, how it differs from 4G, and what it's for.
Science & Technology
What is artificial intelligence?
Machines that learn, recognize, and decide. What artificial intelligence is, how it learns from data, and where you already use it without realizing.
Science & Technology
How does Wi-Fi work?
Wireless internet travels through the air in radio waves. How your router and devices talk invisibly, and why the signal sometimes drops.
Science & Technology
What is the greenhouse effect?
The natural phenomenon that makes Earth habitable and that, boosted by humans, is warming the planet. Explained clearly.
Science & Technology
Why do ships float?
A steel ship weighs thousands of tons and still floats. Archimedes' principle and the push of water explain this apparent miracle of physics.
Science & Technology
Why does water boil?
The bubbles, the 100 °C, and why water boils sooner up a mountain: the physics of boiling explained simply.
Science & Technology
How does a rainbow form?
Sunlight playing with millions of raindrops. Why the seven colors appear, why it's shaped like an arc, and why you always see it with your back to the Sun.
Science & Technology
Why is the sky blue?
Sunlight is white, so why is the sky blue? The scattering of light in the atmosphere explains it, and also why sunsets are red.